Merge pull request #463 from ingvagabund/duplicates-uniformly

RemoveDuplicatePods: evict uniformly

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,46 @@
+---
+name: Bug report
+about: Create a bug report to help improve descheduler
+title: ''
+labels: 'kind/bug'
+assignees: ''
+
+---
+
+<!-- Please answer these questions before submitting your bug report. Thanks! -->
+
+**What version of descheduler are you using?**
+
+descheduler version:
+
+
+**Does this issue reproduce with the latest release?**
+
+
+**Which descheduler CLI options are you using?**
+
+
+**Please provide a copy of your descheduler policy config file**
+
+
+**What k8s version are you using (`kubectl version`)?**
+
+<details><summary><code>kubectl version</code> Output</summary><br><pre>
+$ kubectl version
+
+</pre></details>
+
+
+**What did you do?**
+
+<!--
+If possible, provide a recipe for reproducing the error.
+A detailed sequence of steps describing what to do to observe the issue is good.
+A complete runnable bash shell script is best.
+-->
+
+
+**What did you expect to see?**
+
+
+**What did you see instead?**

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,26 @@
+---
+name: Feature request
+about: Suggest an idea for descheduler
+title: ''
+labels: 'kind/feature'
+assignees: ''
+
+---
+
+<!-- Please answer these questions before submitting your feature request. Thanks! -->
+
+**Is your feature request related to a problem? Please describe.**
+<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+**Describe the solution you'd like**
+<!-- A clear and concise description of what you want to happen. -->
+
+**Describe alternatives you've considered**
+<!-- A clear and concise description of any alternative solutions or features you've considered. -->
+
+**What version of descheduler are you using?**
+
+descheduler version:
+
+**Additional context**
+<!-- Add any other context or screenshots about the feature request here. -->

.github/ISSUE_TEMPLATE/misc_request.md

@@ -0,0 +1,18 @@
+---
+name: Miscellaneous
+about: Not a bug and not a feature
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!--
+Please do not use this to submit a bug report or feature request. Use the
+bug report or feature request options instead.
+
+Also, please consider posting in the Kubernetes Slack #sig-scheduling channel
+instead of opening an issue if this is a support request.
+
+Thanks!
+-->

.github/workflows/release.yaml

@@ -0,0 +1,31 @@
+name: Release Charts
+
+on:
+  push:
+    branches:
+      - release-*
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+
+      - name: Install Helm
+        uses: azure/setup-helm@v1
+        with:
+          version: v3.4.0
+
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@v1.1.0
+        env:
+          CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          CR_RELEASE_NAME_TEMPLATE: "descheduler-helm-chart-{{ .Version }}"

.gitignore

@@ -0,0 +1,5 @@
+_output/
+_tmp/
+vendordiff.patch
+.idea/
+*.code-workspace

.golangci.yml

@@ -0,0 +1,15 @@
+run:
+  deadline: 2m
+
+linters:
+  disable-all: true
+  enable:
+    - gofmt
+    - gosimple
+    - gocyclo
+    - misspell
+    - govet
+
+linters-settings:
+  goimports:
+local-prefixes: sigs.k8s.io/descheduler

.travis.yml

@@ -1,7 +0,0 @@
-language: go
-go:
-  - 1.9.1
-script:
-- hack/verify-gofmt.sh
-- make build
-- make test-unit

CONTRIBUTING.md

@@ -10,7 +10,7 @@ We have full documentation on how to get started contributing here:
 
 - [Contributor License Agreement](https://git.k8s.io/community/CLA.md) Kubernetes projects require that you sign a Contributor License Agreement (CLA) before we can accept your pull requests
 - [Kubernetes Contributor Guide](http://git.k8s.io/community/contributors/guide) - Main contributor documentation, or you can just jump directly to the [contributing section](http://git.k8s.io/community/contributors/guide#contributing)
-- [Contributor Cheat Sheet](https://git.k8s.io/community/contributors/guide/contributor-cheatsheet.md) - Common resources for existing developers
+- [Contributor Cheat Sheet](https://git.k8s.io/community/contributors/guide/contributor-cheatsheet/README.md) - Common resources for existing developers
 
 ## Mentorship
 

Dockerfile

@@ -11,16 +11,18 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM golang:1.9.2
+FROM golang:1.15.5
 
-WORKDIR /go/src/github.com/kubernetes-incubator/descheduler
+WORKDIR /go/src/sigs.k8s.io/descheduler
 COPY . .
-RUN make
+ARG ARCH
+ARG VERSION
+RUN VERSION=${VERSION} make build.$ARCH
 
 FROM scratch
 
-MAINTAINER Avesh Agarwal <avagarwa@redhat.com>
+MAINTAINER Avesh Agarwal <avesh.ncsu@gmail.com>
 
-COPY --from=0 /go/src/github.com/kubernetes-incubator/descheduler/_output/bin/descheduler /bin/descheduler
+COPY --from=0 /go/src/sigs.k8s.io/descheduler/_output/bin/descheduler /bin/descheduler
 
 CMD ["/bin/descheduler", "--help"]

Dockerfile.dev

@@ -13,7 +13,7 @@
 # limitations under the License.
 FROM scratch
 
-MAINTAINER Avesh Agarwal <avagarwa@redhat.com>
+MAINTAINER Avesh Agarwal <avesh.ncsu@gmail.com>
 
 COPY _output/bin/descheduler /bin/descheduler
 

Makefile

@@ -14,33 +14,89 @@
 
 .PHONY: test
 
-# VERSION is currently based on the last commit
-VERSION=`git describe --tags`
-COMMIT=`git rev-parse HEAD`
-BUILD=`date +%FT%T%z`
-LDFLAG_LOCATION=github.com/kubernetes-incubator/descheduler/cmd/descheduler/app
+# VERSION is based on a date stamp plus the last commit
+VERSION?=v$(shell date +%Y%m%d)-$(shell git describe --tags --match "v*")
+BUILD=$(shell date +%FT%T%z)
+LDFLAG_LOCATION=sigs.k8s.io/descheduler/cmd/descheduler/app
+ARCHS = amd64 arm64
 
-LDFLAGS=-ldflags "-X ${LDFLAG_LOCATION}.version=${VERSION} -X ${LDFLAG_LOCATION}.buildDate=${BUILD} -X ${LDFLAG_LOCATION}.gitCommit=${COMMIT}"
+LDFLAGS=-ldflags "-X ${LDFLAG_LOCATION}.version=${VERSION} -X ${LDFLAG_LOCATION}.buildDate=${BUILD}"
 
+GOLANGCI_VERSION := v1.30.0
+HAS_GOLANGCI := $(shell ls _output/bin/golangci-lint)
+
+# REGISTRY is the container registry to push
+# into. The default is to push to the staging
+# registry, not production.
+REGISTRY?=gcr.io/k8s-staging-descheduler
 
 # IMAGE is the image name of descheduler
-# Should this be changed?
 IMAGE:=descheduler:$(VERSION)
 
+# IMAGE_GCLOUD is the image name of descheduler in the remote registry
+IMAGE_GCLOUD:=$(REGISTRY)/descheduler:$(VERSION)
+
+# TODO: upload binaries to GCS bucket
+#
+# In the future binaries can be uploaded to
+# GCS bucket gs://k8s-staging-descheduler.
+
+HAS_HELM := $(shell which helm)
+
 all: build
 
 build:
-	CGO_ENABLED=0 go build ${LDFLAGS} -o _output/bin/descheduler github.com/kubernetes-incubator/descheduler/cmd/descheduler
+	CGO_ENABLED=0 go build ${LDFLAGS} -o _output/bin/descheduler sigs.k8s.io/descheduler/cmd/descheduler
+
+build.amd64:
+	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build ${LDFLAGS} -o _output/bin/descheduler sigs.k8s.io/descheduler/cmd/descheduler
+
+build.arm64:
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build ${LDFLAGS} -o _output/bin/descheduler sigs.k8s.io/descheduler/cmd/descheduler
 
 dev-image: build
 	docker build -f Dockerfile.dev -t $(IMAGE) .
 
 image:
-	docker build -t $(IMAGE) .
+	docker build --build-arg VERSION="$(VERSION)" --build-arg ARCH="amd64" -t $(IMAGE) .
+
+image.amd64:
+	docker build --build-arg VERSION="$(VERSION)" --build-arg ARCH="amd64" -t $(IMAGE)-amd64 .
+
+image.arm64:
+	docker build --build-arg VERSION="$(VERSION)" --build-arg ARCH="arm64" -t $(IMAGE)-arm64 .
+
+push: image
+	gcloud auth configure-docker
+	docker tag $(IMAGE) $(IMAGE_GCLOUD)
+	docker push $(IMAGE_GCLOUD)
+
+push-all: image.amd64 image.arm64
+	gcloud auth configure-docker
+	for arch in $(ARCHS); do \
+		docker tag $(IMAGE)-$${arch} $(IMAGE_GCLOUD)-$${arch} ;\
+		docker push $(IMAGE_GCLOUD)-$${arch} ;\
+	done
+	DOCKER_CLI_EXPERIMENTAL=enabled docker manifest create $(IMAGE_GCLOUD) $(addprefix --amend $(IMAGE_GCLOUD)-, $(ARCHS))
+	for arch in $(ARCHS); do \
+		DOCKER_CLI_EXPERIMENTAL=enabled docker manifest annotate --arch $${arch} $(IMAGE_GCLOUD) $(IMAGE_GCLOUD)-$${arch} ;\
+	done
+	DOCKER_CLI_EXPERIMENTAL=enabled docker manifest push $(IMAGE_GCLOUD) ;\
 
 clean:
 	rm -rf _output
 
+verify: verify-gofmt verify-vendor lint lint-chart verify-spelling
+
+verify-spelling:
+	./hack/verify-spelling.sh
+
+verify-gofmt:
+	./hack/verify-gofmt.sh
+
+verify-vendor:
+	./hack/verify-vendor.sh
+
 test-unit:
 	./test/run-unit-tests.sh
 
@@ -48,7 +104,18 @@ test-e2e:
 	./test/run-e2e-tests.sh
 
 gen:
-	./hack/update-codecgen.sh
 	./hack/update-generated-conversions.sh
 	./hack/update-generated-deep-copies.sh
 	./hack/update-generated-defaulters.sh
+
+lint:
+ifndef HAS_GOLANGCI
+	curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b ./_output/bin ${GOLANGCI_VERSION}
+endif
+	./_output/bin/golangci-lint run
+
+lint-chart:
+ifndef HAS_HELM
+	curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 && chmod 700 ./get_helm.sh && ./get_helm.sh
+endif
+	helm lint ./charts/descheduler

OWNERS

@@ -1,8 +1,12 @@
 approvers:
 - aveshagarwal
+- k82cn
 - ravisantoshgudimetla
-- jayunit100
+- damemi
 reviewers:
 - aveshagarwal
+- k82cn
 - ravisantoshgudimetla
-- jayunit100
+- damemi
+- seanmalloy
+- ingvagabund

README.md

@@ -1,16 +1,14 @@
-[![Build Status](https://travis-ci.org/kubernetes-incubator/descheduler.svg?branch=master)](https://travis-ci.org/kubernetes-incubator/descheduler)
-[![Go Report Card](https://goreportcard.com/badge/github.com/kubernetes-incubator/descheduler)](https://goreportcard.com/report/github.com/kubernetes-incubator/descheduler)
+[![Go Report Card](https://goreportcard.com/badge/kubernetes-sigs/descheduler)](https://goreportcard.com/report/sigs.k8s.io/descheduler)
+![Release Charts](https://github.com/kubernetes-sigs/descheduler/workflows/Release%20Charts/badge.svg)
 
 # Descheduler for Kubernetes
 
-## Introduction
-
 Scheduling in Kubernetes is the process of binding pending pods to nodes, and is performed by
 a component of Kubernetes called kube-scheduler. The scheduler's decisions, whether or where a
 pod can or can not be scheduled, are guided by its configurable policy which comprises of set of
 rules, called predicates and priorities. The scheduler's decisions are influenced by its view of
-a Kubernetes cluster at that point of time when a new pod appears first time for scheduling.
-As Kubernetes clusters are very dynamic and their state change over time, there may be desired
+a Kubernetes cluster at that point of time when a new pod appears for scheduling.
+As Kubernetes clusters are very dynamic and their state changes over time, there may be desire
 to move already running pods to some other nodes for various reasons:
 
 * Some nodes are under or over utilized.
@@ -24,160 +22,139 @@ Descheduler, based on its policy, finds pods that can be moved and evicts them.
 note, in current implementation, descheduler does not schedule replacement of evicted pods
 but relies on the default scheduler for that.
 
-## Build and Run
+Table of Contents
+=================
 
-Build descheduler:
+  * [Quick Start](#quick-start)
+     * [Run As A Job](#run-as-a-job)
+     * [Run As A CronJob](#run-as-a-cronjob)
+     * [Install Using Helm](#install-using-helm)
+     * [Install Using Kustomize](#install-using-kustomize)
+  * [User Guide](#user-guide)
+  * [Policy and Strategies](#policy-and-strategies)
+     * [RemoveDuplicates](#removeduplicates)
+     * [LowNodeUtilization](#lownodeutilization)
+     * [RemovePodsViolatingInterPodAntiAffinity](#removepodsviolatinginterpodantiaffinity)
+     * [RemovePodsViolatingNodeAffinity](#removepodsviolatingnodeaffinity)
+     * [RemovePodsViolatingNodeTaints](#removepodsviolatingnodetaints)
+     * [RemovePodsViolatingTopologySpreadConstraint](#removepodsviolatingtopologyspreadconstraint)
+     * [RemovePodsHavingTooManyRestarts](#removepodshavingtoomanyrestarts)
+     * [PodLifeTime](#podlifetime)
+  * [Filter Pods](#filter-pods)
+     * [Namespace filtering](#namespace-filtering)
+     * [Priority filtering](#priority-filtering)
+  * [Pod Evictions](#pod-evictions)
+     * [Pod Disruption Budget (PDB)](#pod-disruption-budget-pdb)
+  * [Compatibility Matrix](#compatibility-matrix)
+  * [Getting Involved and Contributing](#getting-involved-and-contributing)
+     * [Communicating With Contributors](#communicating-with-contributors)
+  * [Roadmap](#roadmap)
+     * [Code of conduct](#code-of-conduct)
 
-```sh
-$ make
-```
+## Quick Start
 
-and run descheduler:
+The descheduler can be run as a Job or CronJob inside of a k8s cluster. It has the
+advantage of being able to be run multiple times without needing user intervention.
+The descheduler pod is run as a critical pod in the `kube-system` namespace to avoid
+being evicted by itself or by the kubelet.
 
-```sh
-$ ./_output/bin/descheduler --kubeconfig <path to kubeconfig> --policy-config-file <path-to-policy-file>
-```
-
-For more information about available options run:
-```
-$ ./_output/bin/descheduler --help
-```
-
-## Running Descheduler as a Job Inside of a Pod
-
-Descheduler can be run as a job inside of a pod. It has the advantage of
-being able to be run multiple times without needing user intervention.
-Descheduler pod is run as a critical pod to avoid being evicted by itself,
-or by kubelet due to an eviction event. Since critical pods are created in
-`kube-system` namespace, descheduler job and its pod will also be created
-in `kube-system` namespace.
-
-###  Create a container image
-
-First we create a simple Docker image utilizing the Dockerfile found in the root directory:
+### Run As A Job
 
 ```
-$ make dev-image
+kubectl create -f kubernetes/base/rbac.yaml
+kubectl create -f kubernetes/base/configmap.yaml
+kubectl create -f kubernetes/job/job.yaml
 ```
 
-This creates an image based off the binary we've built before. To build both the
-binary and image in one step you can run the following command:
+### Run As A CronJob
 
 ```
-$ make image
+kubectl create -f kubernetes/base/rbac.yaml
+kubectl create -f kubernetes/base/configmap.yaml
+kubectl create -f kubernetes/cronjob/cronjob.yaml
 ```
 
-This eliminates the need to have Go installed locally and builds the binary
-within it's own container.
+### Install Using Helm
 
-### Create a cluster role
+Starting with release v0.18.0 there is an official helm chart that can be used to install the
+descheduler. See the [helm chart README](https://github.com/kubernetes-sigs/descheduler/blob/master/charts/descheduler/README.md) for detailed instructions.
 
-To give necessary permissions for the descheduler to work in a pod, create a cluster role:
+The descheduler helm chart is also listed on the [artifact hub](https://artifacthub.io/packages/helm/descheduler/descheduler).
 
+### Install Using Kustomize
+
+You can use kustomize to install descheduler.
+See the [resources | Kustomize](https://kubernetes-sigs.github.io/kustomize/api-reference/kustomization/resources/) for detailed instructions.
+
+Run As A Job
 ```
-$ cat << EOF| kubectl create -f -
-kind: ClusterRole
-apiVersion: rbac.authorization.k8s.io/v1beta1
-metadata:
-  name: descheduler-cluster-role
-rules:
-- apiGroups: [""]
-  resources: ["nodes"]
-  verbs: ["get", "watch", "list"]
-- apiGroups: [""]
-  resources: ["pods"]
-  verbs: ["get", "watch", "list", "delete"]
-- apiGroups: [""]
-  resources: ["pods/eviction"]
-  verbs: ["create"]
-EOF
+kustomize build 'github.com/kubernetes-sigs/descheduler/kubernetes/job?ref=master' | kubectl apply -f -
 ```
 
-### Create the service account which will be used to run the job:
-
+Run As A CronJob
 ```
-$ kubectl create sa descheduler-sa -n kube-system
+kustomize build 'github.com/kubernetes-sigs/descheduler/kubernetes/cronjob?ref=master' | kubectl apply -f -
 ```
 
-### Bind the cluster role to the service account:
+## User Guide
 
-```
-$ kubectl create clusterrolebinding descheduler-cluster-role-binding \
-    --clusterrole=descheduler-cluster-role \
-    --serviceaccount=kube-system:descheduler-sa
-```
-### Create a configmap to store descheduler policy
-
-Descheduler policy is created as a ConfigMap in `kube-system` namespace
-so that it can be mounted as a volume inside pod.
-
-```
-$ kubectl create configmap descheduler-policy-configmap \
-     -n kube-system --from-file=<path-to-policy-dir/policy.yaml>
-```
-### Create the job specification (descheduler-job.yaml)
-
-```
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: descheduler-job
-  namespace: kube-system
-spec:
-  parallelism: 1
-  completions: 1
-  template:
-    metadata:
-      name: descheduler-pod
-      annotations:
-        scheduler.alpha.kubernetes.io/critical-pod: ""
-    spec:
-        containers:
-        - name: descheduler
-          image: descheduler
-          volumeMounts:
-          - mountPath: /policy-dir
-            name: policy-volume
-          command: ["/bin/descheduler",  "--policy-config-file", "/policy-dir/policy.yaml"]
-        restartPolicy: "Never"
-        serviceAccountName: descheduler-sa
-        volumes:
-        - name: policy-volume
-          configMap:
-            name: descheduler-policy-configmap
-```
-
-Please note that the pod template is configured with critical pod annotation, and
-the policy `policy-file` is mounted as a volume from the config map.
-
-### Run the descheduler as a job in a pod:
-```
-$ kubectl create -f descheduler-job.yaml
-```
+See the [user guide](docs/user-guide.md) in the `/docs` directory.
 
 ## Policy and Strategies
 
-Descheduler's policy is configurable and includes strategies to be enabled or disabled.
-Four strategies, `RemoveDuplicates`, `LowNodeUtilization`, `RemovePodsViolatingInterPodAntiAffinity`, `RemovePodsViolatingNodeAffinity` are currently implemented.
-As part of the policy, the parameters associated with the strategies can be configured too.
-By default, all strategies are enabled.
+Descheduler's policy is configurable and includes strategies that can be enabled or disabled.
+Eight strategies `RemoveDuplicates`, `LowNodeUtilization`, `RemovePodsViolatingInterPodAntiAffinity`,
+`RemovePodsViolatingNodeAffinity`, `RemovePodsViolatingNodeTaints`, `RemovePodsViolatingTopologySpreadConstraint`,
+`RemovePodsHavingTooManyRestarts`, and `PodLifeTime` are currently implemented. As part of the policy, the
+parameters associated with the strategies can be configured too. By default, all strategies are enabled.
+
+The policy also includes common configuration for all the strategies:
+- `nodeSelector` - limiting the nodes which are processed
+- `evictLocalStoragePods` - allowing to evict pods with local storage
+- `maxNoOfPodsToEvictPerNode` - maximum number of pods evicted from each node (summed through all strategies)
+
+```yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+nodeSelector: prod=dev
+evictLocalStoragePods: true
+maxNoOfPodsToEvictPerNode: 40
+strategies:
+  ...
+```
 
 ### RemoveDuplicates
 
 This strategy makes sure that there is only one pod associated with a Replica Set (RS),
-Replication Controller (RC), Deployment, or Job running on same node. If there are more,
+Replication Controller (RC), Deployment, or Job running on the same node. If there are more,
 those duplicate pods are evicted for better spreading of pods in a cluster. This issue could happen
 if some nodes went down due to whatever reasons, and pods on them were moved to other nodes leading to
-more than one pod associated with RS or RC, for example, running on same node. Once the failed nodes
-are ready again, this strategy could be enabled to evict those duplicate pods. Currently, there are no
-parameters associated with this strategy. To disable this strategy, the policy should look like:
+more than one pod associated with a RS or RC, for example, running on the same node. Once the failed nodes
+are ready again, this strategy could be enabled to evict those duplicate pods.
 
-```
+It provides one optional parameter, `ExcludeOwnerKinds`, which is a list of OwnerRef `Kind`s. If a pod
+has any of these `Kind`s listed as an `OwnerRef`, that pod will not be considered for eviction.
+
+**Parameters:**
+
+|Name|Type|
+|---|---|
+|`excludeOwnerKinds`|list(string)|
+|`namespaces`|(see [namespace filtering](#namespace-filtering))|
+|`thresholdPriority`|int (see [priority filtering](#priority-filtering))|
+|`thresholdPriorityClassName`|string (see [priority filtering](#priority-filtering))|
+
+**Example:**
+```yaml
 apiVersion: "descheduler/v1alpha1"
 kind: "DeschedulerPolicy"
 strategies:
   "RemoveDuplicates":
-     enabled: false
+     enabled: true
+     params:
+       removeDuplicates:
+         excludeOwnerKinds:
+         - "ReplicaSet"
 ```
 
 ### LowNodeUtilization
@@ -186,20 +163,32 @@ This strategy finds nodes that are under utilized and evicts pods, if possible,
 in the hope that recreation of evicted pods will be scheduled on these underutilized nodes. The
 parameters of this strategy are configured under `nodeResourceUtilizationThresholds`.
 
-The under utilization of nodes is determined by a configurable threshold, `thresholds`. The threshold
+The under utilization of nodes is determined by a configurable threshold `thresholds`. The threshold
 `thresholds` can be configured for cpu, memory, and number of pods in terms of percentage. If a node's
 usage is below threshold for all (cpu, memory, and number of pods), the node is considered underutilized.
-Currently, pods' request resource requirements are considered for computing node resource utilization.
+Currently, pods request resource requirements are considered for computing node resource utilization.
 
 There is another configurable threshold, `targetThresholds`, that is used to compute those potential nodes
-from where pods could be evicted. Any node, between the thresholds, `thresholds` and `targetThresholds` is
+from where pods could be evicted. If a node's usage is above targetThreshold for any (cpu, memory, or number of pods),
+the node is considered over utilized. Any node between the thresholds, `thresholds` and `targetThresholds` is
 considered appropriately utilized and is not considered for eviction. The threshold, `targetThresholds`,
 can be configured for cpu, memory, and number of pods too in terms of percentage.
 
 These thresholds, `thresholds` and `targetThresholds`, could be tuned as per your cluster requirements.
-An example of the policy for this strategy would look like:
 
-```
+**Parameters:**
+
+|Name|Type|
+|---|---|
+|`thresholds`|map(string:int)|
+|`targetThresholds`|map(string:int)|
+|`numberOfNodes`|int|
+|`thresholdPriority`|int (see [priority filtering](#priority-filtering))|
+|`thresholdPriorityClassName`|string (see [priority filtering](#priority-filtering))|
+
+**Example:**
+
+```yaml
 apiVersion: "descheduler/v1alpha1"
 kind: "DeschedulerPolicy"
 strategies:
@@ -217,28 +206,76 @@ strategies:
            "pods": 50
 ```
 
-There is another parameter associated with `LowNodeUtilization` strategy, called `numberOfNodes`.
-This parameter can be configured to activate the strategy only when number of under utilized nodes
+Policy should pass the following validation checks:
+* Only three types of resources are supported: `cpu`, `memory` and `pods`.
+* `thresholds` or `targetThresholds` can not be nil and they must configure exactly the same types of resources.
+* The valid range of the resource's percentage value is \[0, 100\]
+* Percentage value of `thresholds` can not be greater than `targetThresholds` for the same resource.
+
+If any of the resource types is not specified, all its thresholds default to 100% to avoid nodes going
+from underutilized to overutilized.
+
+There is another parameter associated with the `LowNodeUtilization` strategy, called `numberOfNodes`.
+This parameter can be configured to activate the strategy only when the number of under utilized nodes
 are above the configured value. This could be helpful in large clusters where a few nodes could go
 under utilized frequently or for a short period of time. By default, `numberOfNodes` is set to zero.
 
 ### RemovePodsViolatingInterPodAntiAffinity
 
-This strategy makes sure that pods violating interpod anti-affinity are removed from nodes. For example, if there is podA on node and podB and podC(running on same node) have antiaffinity rules which prohibit them to run on the same node, then podA will be evicted from the node so that podB and podC could run. This issue could happen, when the anti-affinity rules for pods B,C are created when they are already running on node. Currently, there are no parameters associated with this strategy. To disable this strategy, the policy should look like:
+This strategy makes sure that pods violating interpod anti-affinity are removed from nodes. For example,
+if there is podA on a node and podB and podC (running on the same node) have anti-affinity rules which prohibit
+them to run on the same node, then podA will be evicted from the node so that podB and podC could run. This
+issue could happen, when the anti-affinity rules for podB and podC are created when they are already running on
+node.
 
-```
+**Parameters:**
+
+|Name|Type|
+|---|---|
+|`thresholdPriority`|int (see [priority filtering](#priority-filtering))|
+|`thresholdPriorityClassName`|string (see [priority filtering](#priority-filtering))|
+|`namespaces`|(see [namespace filtering](#namespace-filtering))|
+
+**Example:**
+
+```yaml
 apiVersion: "descheduler/v1alpha1"
 kind: "DeschedulerPolicy"
 strategies:
   "RemovePodsViolatingInterPodAntiAffinity":
-     enabled: false
+     enabled: true
 ```
 
 ### RemovePodsViolatingNodeAffinity
 
-This strategy makes sure that pods violating node affinity are removed from nodes. For example, there is podA that was scheduled on nodeA which satisfied the node affinity rule `requiredDuringSchedulingIgnoredDuringExecution` at the time of scheduling, but over time nodeA no longer satisfies the rule, then if another node nodeB is available that satisfies the node affinity rule, then podA will be evicted from nodeA. The policy file should like this -
+This strategy makes sure all pods violating
+[node affinity](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#node-affinity)
+are eventually removed from nodes. Node affinity rules allow a pod to specify
+`requiredDuringSchedulingIgnoredDuringExecution` type, which tells the scheduler
+to respect node affinity when scheduling the pod but kubelet to ignore
+in case node changes over time and no longer respects the affinity.
+When enabled, the strategy serves as a temporary implementation
+of `requiredDuringSchedulingRequiredDuringExecution` and evicts pod for kubelet
+that no longer respects node affinity.
 
-```
+For example, there is podA scheduled on nodeA which satisfies the node
+affinity rule `requiredDuringSchedulingIgnoredDuringExecution` at the time
+of scheduling. Over time nodeA stops to satisfy the rule. When the strategy gets
+executed and there is another node available that satisfies the node affinity rule,
+podA gets evicted from nodeA.
+
+**Parameters:**
+
+|Name|Type|
+|---|---|
+|`nodeAffinityType`|list(string)|
+|`thresholdPriority`|int (see [priority filtering](#priority-filtering))|
+|`thresholdPriorityClassName`|string (see [priority filtering](#priority-filtering))|
+|`namespaces`|(see [namespace filtering](#namespace-filtering))|
+
+**Example:**
+
+```yaml
 apiVersion: "descheduler/v1alpha1"
 kind: "DeschedulerPolicy"
 strategies:
@@ -249,50 +286,294 @@ strategies:
       - "requiredDuringSchedulingIgnoredDuringExecution"
 ```
 
+### RemovePodsViolatingNodeTaints
+
+This strategy makes sure that pods violating NoSchedule taints on nodes are removed. For example there is a
+pod "podA" with a toleration to tolerate a taint ``key=value:NoSchedule`` scheduled and running on the tainted
+node. If the node's taint is subsequently updated/removed, taint is no longer satisfied by its pods' tolerations
+and will be evicted.
+
+**Parameters:**
+
+|Name|Type|
+|---|---|
+|`thresholdPriority`|int (see [priority filtering](#priority-filtering))|
+|`thresholdPriorityClassName`|string (see [priority filtering](#priority-filtering))|
+|`namespaces`|(see [namespace filtering](#namespace-filtering))|
+
+**Example:**
+
+````yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "RemovePodsViolatingNodeTaints":
+    enabled: true
+````
+
+### RemovePodsViolatingTopologySpreadConstraint
+
+This strategy makes sure that pods violating [topology spread constraints](https://kubernetes.io/docs/concepts/workloads/pods/pod-topology-spread-constraints/)
+are evicted from nodes. Specifically, it tries to evict the minimum number of pods required to balance topology domains to within each constraint's `maxSkew`.
+This strategy requires k8s version 1.18 at a minimum.
+
+**Parameters:**
+
+|Name|Type|
+|---|---|
+|`thresholdPriority`|int (see [priority filtering](#priority-filtering))|
+|`thresholdPriorityClassName`|string (see [priority filtering](#priority-filtering))|
+|`namespaces`|(see [namespace filtering](#namespace-filtering))|
+
+**Example:**
+
+```yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "RemovePodsViolatingTopologySpreadConstraint":
+     enabled: true
+```
+
+
+### RemovePodsHavingTooManyRestarts
+
+This strategy makes sure that pods having too many restarts are removed from nodes. For example a pod with EBS/PD that 
+can't get the volume/disk attached to the instance, then the pod should be re-scheduled to other nodes. Its parameters 
+include `podRestartThreshold`, which is the number of restarts at which a pod should be evicted, and `includingInitContainers`, 
+which determines whether init container restarts should be factored into that calculation.
+
+**Parameters:**
+
+|Name|Type|
+|---|---|
+|`podRestartThreshold`|int|
+|`includingInitContainers`|bool|
+|`thresholdPriority`|int (see [priority filtering](#priority-filtering))|
+|`thresholdPriorityClassName`|string (see [priority filtering](#priority-filtering))|
+|`namespaces`|(see [namespace filtering](#namespace-filtering))|
+
+**Example:**
+
+```yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "RemovePodsHavingTooManyRestarts":
+     enabled: true
+     params:
+       podsHavingTooManyRestarts:
+         podRestartThreshold: 100
+         includingInitContainers: true
+```
+
+### PodLifeTime
+
+This strategy evicts pods that are older than `maxPodLifeTimeSeconds`.
+
+You can also specify `podStatusPhases` to `only` evict pods with specific `StatusPhases`, currently this parameter is limited
+to `Running` and `Pending`.
+
+**Parameters:**
+
+|Name|Type|
+|---|---|
+|`maxPodLifeTimeSeconds`|int|
+|`podStatusPhases`|list(string)|
+|`thresholdPriority`|int (see [priority filtering](#priority-filtering))|
+|`thresholdPriorityClassName`|string (see [priority filtering](#priority-filtering))|
+|`namespaces`|(see [namespace filtering](#namespace-filtering))|
+
+**Example:**
+
+```yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "PodLifeTime":
+     enabled: true
+     params:
+       podLifeTime:
+         maxPodLifeTimeSeconds: 86400
+         podStatusPhases:
+         - "Pending"
+```
+
+## Filter Pods
+
+### Namespace filtering
+
+The following strategies accept a `namespaces` parameter which allows to specify a list of including, resp. excluding namespaces:
+* `PodLifeTime`
+* `RemovePodsHavingTooManyRestarts`
+* `RemovePodsViolatingNodeTaints`
+* `RemovePodsViolatingNodeAffinity`
+* `RemovePodsViolatingInterPodAntiAffinity`
+* `RemoveDuplicates`
+* `RemovePodsViolatingTopologySpreadConstraint`
+
+For example:
+
+```yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "PodLifeTime":
+     enabled: true
+     params:
+        podLifeTime:
+          maxPodLifeTimeSeconds: 86400
+        namespaces:
+          include:
+          - "namespace1"
+          - "namespace2"
+```
+
+In the examples `PodLifeTime` gets executed only over `namespace1` and `namespace2`.
+The similar holds for `exclude` field:
+
+```yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "PodLifeTime":
+     enabled: true
+     params:
+        podLifeTime:
+          maxPodLifeTimeSeconds: 86400
+        namespaces:
+          exclude:
+          - "namespace1"
+          - "namespace2"
+```
+
+The strategy gets executed over all namespaces but `namespace1` and `namespace2`.
+
+It's not allowed to compute `include` with `exclude` field.
+
+### Priority filtering
+
+All strategies are able to configure a priority threshold, only pods under the threshold can be evicted. You can
+specify this threshold by setting `thresholdPriorityClassName`(setting the threshold to the value of the given
+priority class) or `thresholdPriority`(directly setting the threshold) parameters. By default, this threshold
+is set to the value of `system-cluster-critical` priority class.
+E.g.
+
+Setting `thresholdPriority`
+```yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "PodLifeTime":
+     enabled: true
+     params:
+        podLifeTime:
+          maxPodLifeTimeSeconds: 86400
+        thresholdPriority: 10000
+```
+
+Setting `thresholdPriorityClassName`
+```yaml
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "PodLifeTime":
+     enabled: true
+     params:
+        podLifeTime:
+          maxPodLifeTimeSeconds: 86400
+        thresholdPriorityClassName: "priorityclass1"
+```
+
+Note that you can't configure both `thresholdPriority` and `thresholdPriorityClassName`, if the given priority class
+does not exist, descheduler won't create it and will throw an error.
+
 ## Pod Evictions
 
-When the descheduler decides to evict pods from a node, it employs following general mechanism:
+When the descheduler decides to evict pods from a node, it employs the following general mechanism:
 
-* Critical pods (with annotations scheduler.alpha.kubernetes.io/critical-pod) are never evicted.
-* Pods (static or mirrored pods or stand alone pods) not part of an RC, RS, Deployment or Jobs are
+* [Critical pods](https://kubernetes.io/docs/tasks/administer-cluster/guaranteed-scheduling-critical-addon-pods/) (with priorityClassName set to system-cluster-critical or system-node-critical) are never evicted.
+* Pods (static or mirrored pods or stand alone pods) not part of an RC, RS, Deployment or Job are
 never evicted because these pods won't be recreated.
 * Pods associated with DaemonSets are never evicted.
-* Pods with local storage are never evicted.
-* Best efforts pods are evicted before Burstable and Guaranteed pods.
+* Pods with local storage are never evicted (unless `evictLocalStoragePods: true` is set)
+* In `LowNodeUtilization` and `RemovePodsViolatingInterPodAntiAffinity`, pods are evicted by their priority from low to high, and if they have same priority,
+best effort pods are evicted before burstable and guaranteed pods.
+* All types of pods with the annotation descheduler.alpha.kubernetes.io/evict are evicted. This
+  annotation is used to override checks which prevent eviction and users can select which pod is evicted.
+  Users should know how and if the pod will be recreated.
 
-### Pod disruption Budget (PDB)
-Pods subject to Pod Disruption Budget (PDB) are not evicted if descheduling violates its pod
-disruption budget (PDB). The pods are evicted by using eviction subresource to handle PDB.
+Setting `--v=4` or greater on the Descheduler will log all reasons why any pod is not evictable.
+
+### Pod Disruption Budget (PDB)
+
+Pods subject to a Pod Disruption Budget(PDB) are not evicted if descheduling violates its PDB. The pods
+are evicted by using the eviction subresource to handle PDB.
+
+## Compatibility Matrix
+The below compatibility matrix shows the k8s client package(client-go, apimachinery, etc) versions that descheduler
+is compiled with. At this time descheduler does not have a hard dependency to a specific k8s release. However a
+particular descheduler release is only tested against the three latest k8s minor versions. For example descheduler
+v0.18 should work with k8s v1.18, v1.17, and v1.16.
+
+Starting with descheduler release v0.18 the minor version of descheduler matches the minor version of the k8s client
+packages that it is compiled with.
+
+Descheduler  | Supported Kubernetes Version
+-------------|-----------------------------
+v0.20        | v1.20
+v0.19        | v1.19
+v0.18        | v1.18
+v0.10        | v1.17
+v0.4-v0.9    | v1.9+
+v0.1-v0.3    | v1.7-v1.8
+
+
+## Getting Involved and Contributing
+
+Are you interested in contributing to descheduler? We, the
+maintainers and community, would love your suggestions, contributions, and help!
+Also, the maintainers can be contacted at any time to learn more about how to get
+involved.
+
+To get started writing code see the [contributor guide](docs/contributor-guide.md) in the `/docs` directory.
+
+In the interest of getting more new people involved we tag issues with
+[`good first issue`][good_first_issue].
+These are typically issues that have smaller scope but are good ways to start
+to get acquainted with the codebase.
+
+We also encourage ALL active community participants to act as if they are
+maintainers, even if you don't have "official" write permissions. This is a
+community effort, we are here to serve the Kubernetes community. If you have an
+active interest and you want to get involved, you have real power! Don't assume
+that the only people who can get things done around here are the "maintainers".
+
+We also would love to add more "official" maintainers, so show us what you can
+do!
+
+This repository uses the Kubernetes bots. See a full list of the commands [here][prow].
+
+### Communicating With Contributors
+
+You can reach the contributors of this project at:
+
+- [Slack channel](https://kubernetes.slack.com/messages/sig-scheduling)
+- [Mailing list](https://groups.google.com/forum/#!forum/kubernetes-sig-scheduling)
+
+Learn how to engage with the Kubernetes community on the [community page](http://kubernetes.io/community/).
 
 ## Roadmap
 
 This roadmap is not in any particular order.
 
-* Strategy to consider taints and tolerations
 * Consideration of pod affinity
-* Strategy to consider pod life time
 * Strategy to consider number of pending pods
 * Integration with cluster autoscaler
 * Integration with metrics providers for obtaining real load metrics
 * Consideration of Kubernetes's scheduler's predicates
 
 
-## Compatibility matrix
-
-Descheduler  | supported Kubernetes version
--------------|-----------------------------
-0.4+          | 1.9+
-0.1-0.3      | 1.7-1.8
-
-## Community, discussion, contribution, and support
-
-Learn how to engage with the Kubernetes community on the [community page](http://kubernetes.io/community/).
-
-You can reach the maintainers of this project at:
-
-- [Slack channel](https://kubernetes.slack.com/messages/sig-scheduling)
-- [Mailing list](https://groups.google.com/forum/#!forum/kubernetes-sig-scheduling)
-
 ### Code of conduct
 
 Participation in the Kubernetes community is governed by the [Kubernetes Code of Conduct](code-of-conduct.md).

SECURITY_CONTACTS

@@ -11,4 +11,5 @@
 # INSTRUCTIONS AT https://kubernetes.io/security/
 
 aveshagarwal
+k82cn
 ravisantoshgudimetla

charts/descheduler/.helmignore

@@ -0,0 +1,22 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/descheduler/Chart.yaml

@@ -0,0 +1,16 @@
+apiVersion: v1
+name: descheduler
+version: 0.20.0
+appVersion: 0.20.0
+description: Descheduler for Kubernetes is used to rebalance clusters by evicting pods that can potentially be scheduled on better nodes. In the current implementation, descheduler does not schedule replacement of evicted pods but relies on the default scheduler for that.
+keywords:
+- kubernetes
+- descheduler
+- kube-scheduler
+home: https://github.com/kubernetes-sigs/descheduler
+icon: https://kubernetes.io/images/favicon.png
+sources:
+- https://github.com/kubernetes-sigs/descheduler
+maintainers:
+- name: Kubernetes SIG Scheduling
+  email: kubernetes-sig-scheduling@googlegroups.com

charts/descheduler/README.md

@@ -0,0 +1,65 @@
+# Descheduler for Kubernetes
+
+[Descheduler](https://github.com/kubernetes-sigs/descheduler/) for Kubernetes is used to rebalance clusters by evicting pods that can potentially be scheduled on better nodes. In the current implementation, descheduler does not schedule replacement of evicted pods but relies on the default scheduler for that.
+
+## TL;DR:
+
+```shell
+helm repo add descheduler https://kubernetes-sigs.github.io/descheduler/
+helm install my-release --namespace kube-system descheduler/descheduler
+```
+
+## Introduction
+
+This chart bootstraps a [descheduler](https://github.com/kubernetes-sigs/descheduler/) cron job on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.
+
+## Prerequisites
+
+- Kubernetes 1.14+
+
+## Installing the Chart
+
+To install the chart with the release name `my-release`:
+
+```shell
+helm install --namespace kube-system my-release descheduler/descheduler
+```
+
+The command deploys _descheduler_ on the Kubernetes cluster in the default configuration. The [configuration](#configuration) section lists the parameters that can be configured during installation.
+
+> **Tip**: List all releases using `helm list`
+
+## Uninstalling the Chart
+
+To uninstall/delete the `my-release` deployment:
+
+```shell
+helm delete my-release
+```
+
+The command removes all the Kubernetes components associated with the chart and deletes the release.
+
+## Configuration
+
+The following table lists the configurable parameters of the _descheduler_ chart and their default values.
+
+| Parameter                      | Description                                                                                                           | Default                              |
+| ------------------------------ | --------------------------------------------------------------------------------------------------------------------- | ------------------------------------ |
+| `image.repository`             | Docker repository to use                                                                                              | `k8s.gcr.io/descheduler/descheduler` |
+| `image.tag`                    | Docker tag to use                                                                                                     | `v[chart appVersion]`                |
+| `image.pullPolicy`             | Docker image pull policy                                                                                              | `IfNotPresent`                       |
+| `nameOverride`                 | String to partially override `descheduler.fullname` template (will prepend the release name)                          | `""`                                 |
+| `fullnameOverride`             | String to fully override `descheduler.fullname` template                                                              | `""`                                 |
+| `schedule`                     | The cron schedule to run the _descheduler_ job on                                                                     | `"*/2 * * * *"`                      |
+| `startingDeadlineSeconds`      | If set, configure `startingDeadlineSeconds` for the _descheduler_ job                                                 | `nil`                                |
+| `successfulJobsHistoryLimit`   | If set, configure `successfulJobsHistoryLimit` for the _descheduler_ job                                              | `nil`                                |
+| `failedJobsHistoryLimit`       | If set, configure `failedJobsHistoryLimit` for the _descheduler_ job                                                  | `nil`                                |
+| `cmdOptions`                   | The options to pass to the _descheduler_ command                                                                      | _see values.yaml_                    |
+| `deschedulerPolicy.strategies` | The _descheduler_ strategies to apply                                                                                 | _see values.yaml_                    |
+| `priorityClassName`            | The name of the priority class to add to pods                                                                         | `system-cluster-critical`            |
+| `rbac.create`                  | If `true`, create & use RBAC resources                                                                                | `true`                               |
+| `podSecurityPolicy.create`     | If `true`, create PodSecurityPolicy                                                                                   | `true`                               |
+| `resources.cpuRequest`        | Descheduler container CPU request                                                                  | `500m`                               |
+| `resources.memoryRequest`        | Descheduler container memory request                                                                  | `256Mi`                               |
+| `serviceAccount.create`        | If `true`, create a service account for the cron job                                                                  | `true`                               |
+| `serviceAccount.name`          | The name of the service account to use, if not set and create is true a name is generated using the fullname template | `nil`                                |

charts/descheduler/templates/NOTES.txt

@@ -0,0 +1 @@
+Descheduler installed as a cron job.

charts/descheduler/templates/_helpers.tpl

@@ -0,0 +1,56 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "descheduler.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "descheduler.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "descheduler.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Common labels
+*/}}
+{{- define "descheduler.labels" -}}
+app.kubernetes.io/name: {{ include "descheduler.name" . }}
+helm.sh/chart: {{ include "descheduler.chart" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "descheduler.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+    {{ default (include "descheduler.fullname" .) .Values.serviceAccount.name }}
+{{- else -}}
+    {{ default "default" .Values.serviceAccount.name }}
+{{- end -}}
+{{- end -}}

charts/descheduler/templates/clusterrole.yaml

@@ -0,0 +1,34 @@
+{{- if .Values.rbac.create -}}
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ template "descheduler.fullname" . }}
+  labels:
+    {{- include "descheduler.labels" . | nindent 4 }}
+rules:
+- apiGroups: [""]
+  resources: ["events"]
+  verbs: ["create", "update"]
+- apiGroups: [""]
+  resources: ["nodes"]
+  verbs: ["get", "watch", "list"]
+- apiGroups: [""]
+  resources: ["namespaces"]
+  verbs: ["get", "list"]
+- apiGroups: [""]
+  resources: ["pods"]
+  verbs: ["get", "watch", "list", "delete"]
+- apiGroups: [""]
+  resources: ["pods/eviction"]
+  verbs: ["create"]
+- apiGroups: ["scheduling.k8s.io"]
+  resources: ["priorityclasses"]
+  verbs: ["get", "watch", "list"]
+{{- if .Values.podSecurityPolicy.create }}
+- apiGroups: ['policy']
+  resources: ['podsecuritypolicies']
+  verbs:     ['use']
+  resourceNames:
+  - {{ template "descheduler.fullname" . }}
+{{- end }}
+{{- end -}}

charts/descheduler/templates/clusterrolebinding.yaml

@@ -0,0 +1,16 @@
+{{- if .Values.rbac.create -}}
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: {{ template "descheduler.fullname" . }}
+  labels:
+    {{- include "descheduler.labels" . | nindent 4 }}
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: {{ template "descheduler.fullname" . }}
+subjects:
+  - kind: ServiceAccount
+    name: {{ template "descheduler.serviceAccountName" . }}
+    namespace: {{ .Release.Namespace }}
+{{- end -}}

charts/descheduler/templates/configmap.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ template "descheduler.fullname" . }}
+  labels:
+    {{- include "descheduler.labels" . | nindent 4 }}
+data:
+  policy.yaml: |
+    apiVersion: "descheduler/v1alpha1"
+    kind: "DeschedulerPolicy"
+{{ toYaml .Values.deschedulerPolicy | trim | indent 4 }}

charts/descheduler/templates/cronjob.yaml

@@ -0,0 +1,64 @@
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: {{ template "descheduler.fullname" . }}
+  labels:
+    {{- include "descheduler.labels" . | nindent 4 }}
+spec:
+  schedule: {{ .Values.schedule | quote }}
+  concurrencyPolicy: "Forbid"
+  {{- if .Values.startingDeadlineSeconds }}
+  startingDeadlineSeconds: {{ .Values.startingDeadlineSeconds }}
+  {{- end }}
+  {{- if .Values.successfulJobsHistoryLimit }}
+  successfulJobsHistoryLimit: {{ .Values.successfulJobsHistoryLimit }}
+  {{- end }}
+  {{- if .Values.failedJobsHistoryLimit }}
+  failedJobsHistoryLimit: {{ .Values.failedJobsHistoryLimit }}
+  {{- end }}
+  jobTemplate:
+    spec:
+      template:
+        metadata:
+          name: {{ template "descheduler.fullname" . }}
+          annotations:
+            checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
+            {{- if .Values.podAnnotations }}
+            {{- .Values.podAnnotations | toYaml | nindent 12 }}
+            {{- end }}
+          labels:
+            app.kubernetes.io/name: {{ include "descheduler.name" . }}
+            app.kubernetes.io/instance: {{ .Release.Name }}
+            {{- if .Values.podLabels }}
+            {{- .Values.podLabels | toYaml | nindent 12 }}
+            {{- end }}
+        spec:
+          {{- if .Values.priorityClassName }}
+          priorityClassName: {{ .Values.priorityClassName }}
+          {{- end }}
+          serviceAccountName: {{ template "descheduler.serviceAccountName" . }}
+          restartPolicy: "Never"
+          containers:
+            - name: {{ .Chart.Name }}
+              image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default (printf "v%s" .Chart.AppVersion) }}"
+              imagePullPolicy: {{ .Values.image.pullPolicy }}
+              command:
+                - "/bin/descheduler"
+              args:
+                - "--policy-config-file"
+                - "/policy-dir/policy.yaml"
+                {{- range $key, $value := .Values.cmdOptions }}
+                - {{ printf "--%s" $key | quote }}
+                {{- if $value }}
+                - {{ $value | quote }}
+                {{- end }}
+                {{- end }}
+              resources:
+                {{- toYaml .Values.resources | nindent 16 }}
+              volumeMounts:
+                - mountPath: /policy-dir
+                  name: policy-volume
+          volumes:
+          - name: policy-volume
+            configMap:
+              name: {{ template "descheduler.fullname" . }}

charts/descheduler/templates/podsecuritypolicy.yaml

@@ -0,0 +1,38 @@
+{{- if .Values.podSecurityPolicy.create -}}
+apiVersion: policy/v1beta1
+kind: PodSecurityPolicy
+metadata:
+  name: {{ template "descheduler.fullname" . }}
+  annotations:
+    seccomp.security.alpha.kubernetes.io/allowedProfileNames: 'docker/default,runtime/default'
+    seccomp.security.alpha.kubernetes.io/defaultProfileName:  'runtime/default'
+spec:
+  privileged: false
+  allowPrivilegeEscalation: false
+  requiredDropCapabilities:
+    - ALL
+  volumes:
+    - 'configMap'
+    - 'secret'
+  hostNetwork: false
+  hostIPC: false
+  hostPID: false
+  runAsUser:
+    rule: 'MustRunAs'
+    ranges:
+      - min: 1
+        max: 65535
+  seLinux:
+    rule: 'RunAsAny'
+  supplementalGroups:
+    rule: 'MustRunAs'
+    ranges:
+      - min: 1
+        max: 65535
+  fsGroup:
+    rule: 'MustRunAs'
+    ranges:
+      - min: 1
+        max: 65535
+  readOnlyRootFilesystem: true
+{{- end -}}

charts/descheduler/templates/serviceaccount.yaml

@@ -0,0 +1,8 @@
+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ template "descheduler.serviceAccountName" . }}
+  labels:
+    {{- include "descheduler.labels" . | nindent 4 }}
+{{- end -}}

charts/descheduler/values.yaml

@@ -0,0 +1,74 @@
+# Default values for descheduler.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+image:
+  repository: k8s.gcr.io/descheduler/descheduler
+  # Overrides the image tag whose default is the chart version
+  tag: ""
+  pullPolicy: IfNotPresent
+
+resources:
+  requests:
+    cpu: 500m
+    memory: 256Mi
+  # limits:
+  #   cpu: 100m
+  #   memory: 128Mi
+
+nameOverride: ""
+fullnameOverride: ""
+
+schedule: "*/2 * * * *"
+#startingDeadlineSeconds: 200
+#successfulJobsHistoryLimit: 1
+#failedJobsHistoryLimit: 1
+
+cmdOptions:
+  v: 3
+  # evict-local-storage-pods:
+  # max-pods-to-evict-per-node: 10
+  # node-selector: "key1=value1,key2=value2"
+
+deschedulerPolicy:
+  strategies:
+    RemoveDuplicates:
+      enabled: true
+    RemovePodsViolatingNodeTaints:
+      enabled: true
+    RemovePodsViolatingNodeAffinity:
+      enabled: true
+      params:
+         nodeAffinityType:
+         - requiredDuringSchedulingIgnoredDuringExecution
+    RemovePodsViolatingInterPodAntiAffinity:
+      enabled: true
+    LowNodeUtilization:
+      enabled: true
+      params:
+        nodeResourceUtilizationThresholds:
+          thresholds:
+            cpu: 20
+            memory: 20
+            pods: 20
+          targetThresholds:
+            cpu: 50
+            memory: 50
+            pods: 50
+
+priorityClassName: system-cluster-critical
+
+rbac:
+  # Specifies whether RBAC resources should be created
+  create: true
+
+podSecurityPolicy:
+  # Specifies whether PodSecurityPolicy should be created.
+  create: true
+
+serviceAccount:
+  # Specifies whether a ServiceAccount should be created
+  create: true
+  # The name of the ServiceAccount to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name:

cloudbuild.yaml

@@ -0,0 +1,24 @@
+# See https://cloud.google.com/cloud-build/docs/build-config
+
+# this must be specified in seconds. If omitted, defaults to 600s (10 mins)
+timeout: 1200s
+# this prevents errors if you don't use both _GIT_TAG and _PULL_BASE_REF,
+# or any new substitutions added in the future.
+options:
+  substitution_option: ALLOW_LOOSE
+steps:
+  - name: 'gcr.io/k8s-testimages/gcb-docker-gcloud:v20190906-745fed4'
+    entrypoint: make
+    env:
+    - DOCKER_CLI_EXPERIMENTAL=enabled
+    - VERSION=$_GIT_TAG
+    - BASE_REF=$_PULL_BASE_REF
+    args:
+    - push-all
+substitutions:
+  # _GIT_TAG will be filled with a git-based tag for the image, of the form vYYYYMMDD-hash, and
+  # can be used as a substitution
+  _GIT_TAG: '12345'
+  # _PULL_BASE_REF will contain the ref that was pushed to to trigger this build -
+  # a branch like 'master' or 'release-0.2', or a tag like 'v0.2'.
+  _PULL_BASE_REF: 'master'

cmd/descheduler/app/options/options.go

@@ -18,45 +18,63 @@ limitations under the License.
 package options
 
 import (
+	"github.com/spf13/pflag"
+	utilerrors "k8s.io/apimachinery/pkg/util/errors"
 	clientset "k8s.io/client-go/kubernetes"
 
-	// install the componentconfig api so we get its defaulting and conversion functions
-	"github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig"
-	_ "github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig/install"
-	"github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig/v1alpha1"
-	deschedulerscheme "github.com/kubernetes-incubator/descheduler/pkg/descheduler/scheme"
-
-	"github.com/spf13/pflag"
+	"k8s.io/component-base/logs"
+	"sigs.k8s.io/descheduler/pkg/apis/componentconfig"
+	"sigs.k8s.io/descheduler/pkg/apis/componentconfig/v1alpha1"
+	deschedulerscheme "sigs.k8s.io/descheduler/pkg/descheduler/scheme"
 )
 
 // DeschedulerServer configuration
 type DeschedulerServer struct {
 	componentconfig.DeschedulerConfiguration
 	Client clientset.Interface
+	Logs   *logs.Options
 }
 
 // NewDeschedulerServer creates a new DeschedulerServer with default parameters
-func NewDeschedulerServer() *DeschedulerServer {
-	versioned := v1alpha1.DeschedulerConfiguration{}
-	deschedulerscheme.Scheme.Default(&versioned)
-	cfg := componentconfig.DeschedulerConfiguration{}
-	deschedulerscheme.Scheme.Convert(versioned, &cfg, nil)
-	s := DeschedulerServer{
-		DeschedulerConfiguration: cfg,
+func NewDeschedulerServer() (*DeschedulerServer, error) {
+	cfg, err := newDefaultComponentConfig()
+	if err != nil {
+		return nil, err
 	}
-	return &s
+	return &DeschedulerServer{
+		DeschedulerConfiguration: *cfg,
+		Logs:                     logs.NewOptions(),
+	}, nil
+}
+
+// Validation checks for DeschedulerServer.
+func (s *DeschedulerServer) Validate() error {
+	var errs []error
+	errs = append(errs, s.Logs.Validate()...)
+	return utilerrors.NewAggregate(errs)
+}
+
+func newDefaultComponentConfig() (*componentconfig.DeschedulerConfiguration, error) {
+	versionedCfg := v1alpha1.DeschedulerConfiguration{}
+	deschedulerscheme.Scheme.Default(&versionedCfg)
+	cfg := componentconfig.DeschedulerConfiguration{}
+	if err := deschedulerscheme.Scheme.Convert(&versionedCfg, &cfg, nil); err != nil {
+		return nil, err
+	}
+	return &cfg, nil
 }
 
 // AddFlags adds flags for a specific SchedulerServer to the specified FlagSet
 func (rs *DeschedulerServer) AddFlags(fs *pflag.FlagSet) {
-	fs.DurationVar(&rs.DeschedulingInterval, "descheduling-interval", rs.DeschedulingInterval, "time interval between two consecutive descheduler executions")
+	fs.StringVar(&rs.Logging.Format, "logging-format", rs.Logging.Format, `Sets the log format. Permitted formats: "text", "json". Non-default formats don't honor these flags: --add-dir-header, --alsologtostderr, --log-backtrace-at, --log-dir, --log-file, --log-file-max-size, --logtostderr, --skip-headers, --skip-log-headers, --stderrthreshold, --log-flush-frequency.\nNon-default choices are currently alpha and subject to change without warning.`)
+	fs.DurationVar(&rs.DeschedulingInterval, "descheduling-interval", rs.DeschedulingInterval, "Time interval between two consecutive descheduler executions. Setting this value instructs the descheduler to run in a continuous loop at the interval specified.")
 	fs.StringVar(&rs.KubeconfigFile, "kubeconfig", rs.KubeconfigFile, "File with  kube configuration.")
 	fs.StringVar(&rs.PolicyConfigFile, "policy-config-file", rs.PolicyConfigFile, "File with descheduler policy configuration.")
 	fs.BoolVar(&rs.DryRun, "dry-run", rs.DryRun, "execute descheduler in dry run mode.")
 	// node-selector query causes descheduler to run only on nodes that matches the node labels in the query
-	fs.StringVar(&rs.NodeSelector, "node-selector", rs.NodeSelector, "Selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2)")
+	fs.StringVar(&rs.NodeSelector, "node-selector", rs.NodeSelector, "DEPRECATED: selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2)")
 	// max-no-pods-to-evict limits the maximum number of pods to be evicted per node by descheduler.
-	fs.IntVar(&rs.MaxNoOfPodsToEvictPerNode, "max-pods-to-evict-per-node", rs.MaxNoOfPodsToEvictPerNode, "Limits the maximum number of pods to be evicted per node by descheduler")
+	fs.IntVar(&rs.MaxNoOfPodsToEvictPerNode, "max-pods-to-evict-per-node", rs.MaxNoOfPodsToEvictPerNode, "DEPRECATED: limits the maximum number of pods to be evicted per node by descheduler")
 	// evict-local-storage-pods allows eviction of pods that are using local storage. This is false by default.
-	fs.BoolVar(&rs.EvictLocalStoragePods, "evict-local-storage-pods", rs.EvictLocalStoragePods, "Enables evicting pods using local storage by descheduler")
+	fs.BoolVar(&rs.EvictLocalStoragePods, "evict-local-storage-pods", rs.EvictLocalStoragePods, "DEPRECATED: enables evicting pods using local storage by descheduler")
 }

cmd/descheduler/app/server.go

@@ -21,34 +21,41 @@ import (
 	"flag"
 	"io"
 
-	"github.com/kubernetes-incubator/descheduler/cmd/descheduler/app/options"
-	"github.com/kubernetes-incubator/descheduler/pkg/descheduler"
+	"sigs.k8s.io/descheduler/cmd/descheduler/app/options"
+	"sigs.k8s.io/descheduler/pkg/descheduler"
 
-	"github.com/golang/glog"
 	"github.com/spf13/cobra"
 
-	aflag "k8s.io/apiserver/pkg/util/flag"
-	"k8s.io/apiserver/pkg/util/logs"
+	aflag "k8s.io/component-base/cli/flag"
+	"k8s.io/klog/v2"
 )
 
 // NewDeschedulerCommand creates a *cobra.Command object with default parameters
 func NewDeschedulerCommand(out io.Writer) *cobra.Command {
-	s := options.NewDeschedulerServer()
+	s, err := options.NewDeschedulerServer()
+
+	if err != nil {
+		klog.ErrorS(err, "unable to initialize server")
+	}
+
 	cmd := &cobra.Command{
 		Use:   "descheduler",
 		Short: "descheduler",
 		Long:  `The descheduler evicts pods which may be bound to less desired nodes`,
 		Run: func(cmd *cobra.Command, args []string) {
-			logs.InitLogs()
-			defer logs.FlushLogs()
+			s.Logs.LogFormat = s.Logging.Format
+			s.Logs.Apply()
+
+			if err := s.Validate(); err != nil {
+				klog.ErrorS(err, "failed to validate server configuration")
+			}
 			err := Run(s)
 			if err != nil {
-				glog.Errorf("%v", err)
+				klog.ErrorS(err, "descheduler server")
 			}
 		},
 	}
-	cmd.SetOutput(out)
-
+	cmd.SetOut(out)
 	flags := cmd.Flags()
 	flags.SetNormalizeFunc(aflag.WordSepNormalizeFunc)
 	flags.AddGoFlagSet(flag.CommandLine)

cmd/descheduler/app/version.go

@@ -18,15 +18,14 @@ package app
 
 import (
 	"fmt"
-	"github.com/spf13/cobra"
+	"regexp"
 	"runtime"
 	"strings"
+
+	"github.com/spf13/cobra"
 )
 
 var (
-	// gitCommit is a constant representing the source version that
-	// generated this build. It should be set during build via -ldflags.
-	gitCommit string
 	// version is a constant representing the version tag that
 	// generated this build. It should be set during build via -ldflags.
 	version string
@@ -39,7 +38,6 @@ var (
 type Info struct {
 	Major      string `json:"major"`
 	Minor      string `json:"minor"`
-	GitCommit  string `json:"gitCommit"`
 	GitVersion string `json:"gitVersion"`
 	BuildDate  string `json:"buildDate"`
 	GoVersion  string `json:"goVersion"`
@@ -54,7 +52,6 @@ func Get() Info {
 	return Info{
 		Major:      majorVersion,
 		Minor:      minorVersion,
-		GitCommit:  gitCommit,
 		GitVersion: version,
 		BuildDate:  buildDate,
 		GoVersion:  runtime.Version(),
@@ -80,7 +77,18 @@ func splitVersion(version string) (string, string) {
 	if version == "" {
 		return "", ""
 	}
-	// A sample version would be of form v0.1.0-7-ge884046, so split at first '.' and
-	// then return 0 and 1+(+ appended to follow semver convention) for major and minor versions.
-	return strings.Trim(strings.Split(version, ".")[0], "v"), strings.Split(version, ".")[1] + "+"
+
+	// Version from an automated container build environment for a tag. For example v20200521-v0.18.0.
+	m1, _ := regexp.MatchString(`^v\d{8}-v\d+\.\d+\.\d+$`, version)
+
+	// Version from an automated container build environment(not a tag) or a local build. For example v20201009-v0.18.0-46-g939c1c0.
+	m2, _ := regexp.MatchString(`^v\d{8}-v\d+\.\d+\.\d+-\w+-\w+$`, version)
+
+	if m1 || m2 {
+		semVer := strings.Split(version, "-")[1]
+		return strings.Trim(strings.Split(semVer, ".")[0], "v"), strings.Split(semVer, ".")[1] + "+"
+	}
+
+	// Something went wrong
+	return "", ""
 }

cmd/descheduler/descheduler.go

@@ -17,18 +17,20 @@ limitations under the License.
 package main
 
 import (
-	"flag"
 	"fmt"
+	"k8s.io/component-base/logs"
 	"os"
-
-	"github.com/kubernetes-incubator/descheduler/cmd/descheduler/app"
+	"sigs.k8s.io/descheduler/cmd/descheduler/app"
 )
 
 func main() {
 	out := os.Stdout
 	cmd := app.NewDeschedulerCommand(out)
 	cmd.AddCommand(app.NewVersionCommand())
-	flag.CommandLine.Parse([]string{})
+
+	logs.InitLogs()
+	defer logs.FlushLogs()
+
 	if err := cmd.Execute(); err != nil {
 		fmt.Println(err)
 		os.Exit(1)

docs/README.md

@@ -0,0 +1,5 @@
+# Documentation Index
+
+- [Contributor Guide](contributor-guide.md)
+- [Release Guide](release-guide.md)
+- [User Guide](user-guide.md)

docs/contributor-guide.md

@@ -0,0 +1,43 @@
+# Contributor Guide
+
+## Required Tools
+
+- [Git](https://git-scm.com/downloads)
+- [Go 1.15+](https://golang.org/dl/)
+- [Docker](https://docs.docker.com/install/)
+- [kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl)
+- [kind v0.9.0+](https://kind.sigs.k8s.io/)
+
+## Build and Run
+
+Build descheduler.
+```sh
+cd $GOPATH/src/sigs.k8s.io
+git clone https://github.com/kubernetes-sigs/descheduler.git
+cd descheduler
+make
+```
+
+Run descheduler.
+```sh
+./_output/bin/descheduler --kubeconfig <path to kubeconfig> --policy-config-file <path-to-policy-file> --v 1
+```
+
+View all CLI options.
+```
+./_output/bin/descheduler --help
+```
+
+## Run Tests
+```
+GOOS=linux make dev-image
+kind create cluster --config hack/kind_config.yaml
+kind load docker-image <image name>
+kind get kubeconfig > /tmp/admin.conf
+export KUBECONFIG=/tmp/admin.conf
+make test-unit
+make test-e2e
+```
+
+### Miscellaneous
+See the [hack directory](https://github.com/kubernetes-sigs/descheduler/tree/master/hack) for additional tools and scripts used for developing the descheduler.

docs/release-guide.md

@@ -0,0 +1,74 @@
+# Release Guide
+
+## Container Image
+
+### Semi-automatic
+
+1. Make sure your repo is clean by git's standards
+2. Create a release branch `git checkout -b release-1.18` (not required for patch releases)
+3. Push the release branch to the descheuler repo and ensure branch protection is enabled (not required for patch releases)
+4. Tag the repository from the `master` branch (from the `release-1.18` branch for a patch release) and push the tag `VERSION=v0.18.0 git tag -m $VERSION $VERSION; git push origin $VERSION`
+5. Publish a draft release using the tag you just created
+6. Perform the [image promotion process](https://github.com/kubernetes/k8s.io/tree/master/k8s.gcr.io#image-promoter)
+7. Publish release
+8. Email `kubernetes-sig-scheduling@googlegroups.com` to announce the release
+
+### Manual
+
+1. Make sure your repo is clean by git's standards
+2. Create a release branch `git checkout -b release-1.18` (not required for patch releases)
+3. Push the release branch to the descheuler repo and ensure branch protection is enabled (not required for patch releases)
+4. Tag the repository from the `master` branch (from the `release-1.18` branch for a patch release) and push the tag `VERSION=v0.18.0 git tag -m $VERSION $VERSION; git push origin $VERSION`
+5. Checkout the tag you just created and make sure your repo is clean by git's standards `git checkout $VERSION`
+6. Build and push the container image to the staging registry `VERSION=$VERSION make push-all`
+7. Publish a draft release using the tag you just created
+8. Perform the [image promotion process](https://github.com/kubernetes/k8s.io/tree/master/k8s.gcr.io#image-promoter)
+9. Publish release
+10. Email `kubernetes-sig-scheduling@googlegroups.com` to announce the release
+
+### Notes
+It's important to create the tag on the master branch after creating the release-* branch so that the [Helm releaser-action](#helm-chart) can work.
+It compares the changes in the action-triggering branch to the latest tag on that branch, so if you tag before creating the new branch there
+will be nothing to compare and it will fail (creating a new release branch usually involves no code changes). For this same reason, you should
+also tag patch releases (on the release-* branch) *after* pushing changes (if those changes involve bumping the Helm chart version).
+
+See [post-descheduler-push-images dashboard](https://testgrid.k8s.io/sig-scheduling#post-descheduler-push-images) for staging registry image build job status.
+
+View the descheduler staging registry using [this URL](https://console.cloud.google.com/gcr/images/k8s-staging-descheduler/GLOBAL/descheduler) in a web browser
+or use the below `gcloud` commands.
+
+List images in staging registry.
+```
+gcloud container images list --repository gcr.io/k8s-staging-descheduler
+```
+
+List descheduler image tags in the staging registry.
+```
+gcloud container images list-tags gcr.io/k8s-staging-descheduler/descheduler
+```
+
+Get SHA256 hash for a specific image in the staging registry.
+```
+gcloud container images describe gcr.io/k8s-staging-descheduler/descheduler:v20200206-0.9.0-94-ge2a23f284
+```
+
+Pull image from the staging registry.
+```
+docker pull gcr.io/k8s-staging-descheduler/descheduler:v20200206-0.9.0-94-ge2a23f284
+```
+
+## Helm Chart
+Helm chart releases are managed by a separate set of git tags that are prefixed with `descheduler-helm-chart-*`. Example git tag name is `descheduler-helm-chart-0.18.0`.
+Released versions of the helm charts are stored in the `gh-pages` branch of this repo. The [chart-releaser-action GitHub Action](https://github.com/helm/chart-releaser-action)
+is setup to build and push the helm charts to the `gh-pages` branch when changes are pushed to a `release-*` branch.
+
+The major and minor version of the chart matches the descheduler major and minor versions. For example descheduler helm chart version helm-descheduler-chart-0.18.0 corresponds
+to descheduler version v0.18.0. The patch version of the descheduler helm chart and the patcher version of the descheduler will not necessarily match. The patch
+version of the descheduler helm chart is used to version changes specific to the helm chart.
+
+1. Merge all helm chart changes into the master branch before the release is tagged/cut
+   1. Ensure that `appVersion` in file `charts/descheduler/Chart.yaml` matches the descheduler version(no `v` prefix)
+   2. Ensure that `version` in file `charts/descheduler/Chart.yaml` has been incremented. This is the chart version.
+2. Make sure your repo is clean by git's standards
+3. Follow the release-branch or patch release tagging pattern from the above section.
+4. Verify the new helm artifact has been successfully pushed to the `gh-pages` branch

docs/user-guide.md

@@ -0,0 +1,118 @@
+# User Guide
+
+Starting with descheduler release v0.10.0 container images are available in the official k8s container registry.
+* `k8s.gcr.io/descheduler/descheduler`
+
+Also, starting with descheduler release v0.20.0 multi-arch container images are provided. Currently AMD64 and ARM64
+container images are provided. Multi-arch container images cannot be pulled by [kind](https://kind.sigs.k8s.io) from
+a registry. Therefore starting with descheduler release v0.20.0 use the below process to download the official descheduler
+image into a kind cluster.
+```
+kind create cluster
+docker pull k8s.gcr.io/descheduler/descheduler:v0.20.0
+kind load docker-image k8s.gcr.io/descheduler/descheduler:v0.20.0
+```
+
+## Policy Configuration Examples
+The [examples](https://github.com/kubernetes-sigs/descheduler/tree/master/examples) directory has descheduler policy configuration examples.
+
+## CLI Options
+The descheduler has many CLI options that can be used to override its default behavior.
+```
+descheduler --help
+The descheduler evicts pods which may be bound to less desired nodes
+
+Usage:
+  descheduler [flags]
+  descheduler [command]
+
+Available Commands:
+  help        Help about any command
+  version     Version of descheduler
+
+Flags:
+      --add-dir-header                   If true, adds the file directory to the header of the log messages
+      --alsologtostderr                  log to standard error as well as files
+      --descheduling-interval duration   Time interval between two consecutive descheduler executions. Setting this value instructs the descheduler to run in a continuous loop at the interval specified.
+      --dry-run                          execute descheduler in dry run mode.
+      --evict-local-storage-pods         DEPRECATED: enables evicting pods using local storage by descheduler
+  -h, --help                             help for descheduler
+      --kubeconfig string                File with  kube configuration.
+      --log-backtrace-at traceLocation   when logging hits line file:N, emit a stack trace (default :0)
+      --log-dir string                   If non-empty, write log files in this directory
+      --log-file string                  If non-empty, use this log file
+      --log-file-max-size uint           Defines the maximum size a log file can grow to. Unit is megabytes. If the value is 0, the maximum file size is unlimited. (default 1800)
+      --log-flush-frequency duration     Maximum number of seconds between log flushes (default 5s)
+      --logtostderr                      log to standard error instead of files (default true)
+      --max-pods-to-evict-per-node int   DEPRECATED: limits the maximum number of pods to be evicted per node by descheduler
+      --node-selector string             DEPRECATED: selector (label query) to filter on, supports '=', '==', and '!='.(e.g. -l key1=value1,key2=value2)
+      --policy-config-file string        File with descheduler policy configuration.
+      --skip-headers                     If true, avoid header prefixes in the log messages
+      --skip-log-headers                 If true, avoid headers when opening log files
+      --stderrthreshold severity         logs at or above this threshold go to stderr (default 2)
+  -v, --v Level                          number for the log level verbosity
+      --vmodule moduleSpec               comma-separated list of pattern=N settings for file-filtered logging
+
+Use "descheduler [command] --help" for more information about a command.
+```
+
+## Production Use Cases
+This section contains descriptions of real world production use cases.
+
+### Balance Cluster By Pod Age
+When initially migrating applications from a static virtual machine infrastructure to a cloud native k8s
+infrastructure there can be a tendency to treat application pods like static virtual machines. One approach
+to help prevent developers and operators from treating pods like virtual machines is to ensure that pods
+only run for a fixed amount
+of time.
+
+The `PodLifeTime` strategy can be used to ensure that old pods are evicted. It is recommended to create a
+[pod disruption budget](https://kubernetes.io/docs/tasks/run-application/configure-pdb/) for each
+application to ensure application availability.
+```
+descheduler -v=3 --evict-local-storage-pods --policy-config-file=pod-life-time.yml
+```
+
+This policy configuration file ensures that pods created more than 7 days ago are evicted.
+```
+---
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "PodLifeTime":
+    enabled: true
+    params:
+      maxPodLifeTimeSeconds: 604800 # pods run for a maximum of 7 days
+```
+
+### Balance Cluster By Node Memory Utilization
+
+If your cluster has been running for a long period of time, you may find that the resource utilization is not very
+balanced. The `LowNodeUtilization` strategy can be used to rebalance your cluster based on `cpu`, `memory`
+or `number of pods`.
+
+Using the following policy configuration file, descheduler will rebalance the cluster based on memory by evicting pods
+from nodes with memory utilization over 70% to nodes with memory utilization below 20%.
+
+```
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "LowNodeUtilization":
+    enabled: true
+    params:
+      nodeResourceUtilizationThresholds:
+        thresholds:
+          "memory": 20
+        targetThresholds:
+          "memory": 70
+```
+
+### Autoheal Node Problems
+Descheduler's `RemovePodsViolatingNodeTaints` strategy can be combined with
+[Node Problem Detector](https://github.com/kubernetes/node-problem-detector/) and
+[Cluster Autoscaler](https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler) to automatically remove
+Nodes which have problems. Node Problem Detector can detect specific Node problems and taint any Nodes which have those
+problems. The Descheduler will then deschedule workloads from those Nodes. Finally, if the descheduled Node's resource
+allocation falls below the Cluster Autoscaler's scale down threshold, the Node will become a scale down candidate
+and can be removed by Cluster Autoscaler. These three components form an autohealing cycle for Node problems.

examples/low-node-utilization.yml

@@ -0,0 +1,12 @@
+---
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "LowNodeUtilization":
+    enabled: true
+    params:
+      nodeResourceUtilizationThresholds:
+        thresholds:
+          "memory": 20
+        targetThresholds:
+          "memory": 70

examples/pod-life-time.yml

@@ -0,0 +1,9 @@
+---
+apiVersion: "descheduler/v1alpha1"
+kind: "DeschedulerPolicy"
+strategies:
+  "PodLifeTime":
+    enabled: true
+    params:
+      podLifeTime:
+        maxPodLifeTimeSeconds: 604800 # 7 days

examples/policy.yaml

@@ -17,3 +17,9 @@ strategies:
            "cpu" : 50
            "memory": 50
            "pods": 50
+  "RemovePodsHavingTooManyRestarts":
+     enabled: true
+     params:
+       podsHavingTooManyRestarts:
+         podRestartThreshold: 100
+         includingInitContainers: true

glide.lock

@@ -1,464 +0,0 @@
-hash: ed51a8e643db6e9996ef0ffca671fb31ab5b7fe0d61ecdda828192871f9da366
-updated: 2018-05-22T18:05:00.26435-07:00
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-  - autorest/adal
-  - autorest/azure
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-  - unicode/norm
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-  - storage/v1alpha1
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-  - pkg/version
-  - pkg/watch
-  - third_party/forked/golang/reflect
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-  version: 91e14f394e4796abf5a994a349a222e7081d86b6
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-  version: 78700dec6369ba22221b72770783300f143df150
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-  - kubernetes/typed/admissionregistration/v1alpha1
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-  - kubernetes/typed/admissionregistration/v1beta1
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-  - kubernetes/typed/apps/v1beta1
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-  - kubernetes/typed/apps/v1beta2
-  - kubernetes/typed/apps/v1beta2/fake
-  - kubernetes/typed/authentication/v1
-  - kubernetes/typed/authentication/v1/fake
-  - kubernetes/typed/authentication/v1beta1
-  - kubernetes/typed/authentication/v1beta1/fake
-  - kubernetes/typed/authorization/v1
-  - kubernetes/typed/authorization/v1/fake
-  - kubernetes/typed/authorization/v1beta1
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-  - kubernetes/typed/autoscaling/v1
-  - kubernetes/typed/autoscaling/v1/fake
-  - kubernetes/typed/autoscaling/v2beta1
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-  - kubernetes/typed/batch/v1
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-  - kubernetes/typed/batch/v2alpha1
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-  - kubernetes/typed/certificates/v1beta1
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-  - kubernetes/typed/core/v1
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-  - kubernetes/typed/events/v1beta1
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-  - kubernetes/typed/extensions/v1beta1
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-  - kubernetes/typed/networking/v1
-  - kubernetes/typed/networking/v1/fake
-  - kubernetes/typed/policy/v1beta1
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-  - kubernetes/typed/rbac/v1
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-  - listers/core/v1
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-  - plugin/pkg/client/auth/gcp
-  - plugin/pkg/client/auth/oidc
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-  - util/flowcontrol
-  - util/homedir
-  - util/integer
-  - util/jsonpath
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-- name: k8s.io/kubernetes
-  version: 925c127ec6b946659ad0fd596fa959be43f0cc05
-  subpackages:
-  - pkg/api/legacyscheme
-  - pkg/api/testapi
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-  - pkg/apis/componentconfig/v1alpha1
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-  - pkg/apis/storage/v1
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-  - pkg/apis/storage/v1beta1
-  - pkg/features
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-  - pkg/kubelet/types
-  - pkg/master/ports
-  - pkg/util/parsers
-  - pkg/util/pointer
-  - plugin/pkg/scheduler/algorithm/priorities/util
-testImports: []

glide.yaml

@@ -1,25 +0,0 @@
-package: github.com/kubernetes-incubator/descheduler
-import:
-- package: k8s.io/client-go
-  version: 78700dec6369ba22221b72770783300f143df150
-- package: k8s.io/api
-  version: af4bc157c3a209798fc897f6d4aaaaeb6c2e0d6a
-- package: k8s.io/apiserver
-  version: 91e14f394e4796abf5a994a349a222e7081d86b6
-- package: k8s.io/apimachinery
-  version: 180eddb345a5be3a157cea1c624700ad5bd27b8f
-- package: k8s.io/kubernetes
-  version: v1.9.0
-- package: k8s.io/code-generator
-  version: kubernetes-1.9.0
-- package: github.com/kubernetes/repo-infra
-- package: github.com/spf13/cobra
-  version: f62e98d28ab7ad31d707ba837a966378465c7b57
-- package: k8s.io/gengo
-- package: github.com/ugorji/go
-  version: v.1.1-beta
-- package: github.com/Azure/go-autorest
-  version: e14a70c556c8e0db173358d1a903dca345a8e75e
-- package: golang.org/x/tools
-  subpackages:
-  - imports

go.mod

@@ -0,0 +1,17 @@
+module sigs.k8s.io/descheduler
+
+go 1.15
+
+require (
+	github.com/client9/misspell v0.3.4
+	github.com/spf13/cobra v0.0.5
+	github.com/spf13/pflag v1.0.5
+	k8s.io/api v0.20.0
+	k8s.io/apimachinery v0.20.0
+	k8s.io/apiserver v0.20.0
+	k8s.io/client-go v0.20.0
+	k8s.io/code-generator v0.20.0
+	k8s.io/component-base v0.20.0
+	k8s.io/component-helpers v0.20.0
+	k8s.io/klog/v2 v2.4.0
+)

go.sum

@@ -0,0 +1,636 @@
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+k8s.io/component-base v0.20.0 h1:BXGL8iitIQD+0NgW49UsM7MraNUUGDU3FBmrfUAtmVQ=
+k8s.io/component-base v0.20.0/go.mod h1:wKPj+RHnAr8LW2EIBIK7AxOHPde4gme2lzXwVSoRXeA=
+k8s.io/component-helpers v0.20.0 h1:7Zi1fcb5nV0h03d9eeZGk71+ZWYvAN4Be+xMOZyFerc=
+k8s.io/component-helpers v0.20.0/go.mod h1:nx6NOtfSfGOxnSZsDJxpGbnsVuUA1UXpwDvZIrtigNk=
+k8s.io/gengo v0.0.0-20200413195148-3a45101e95ac/go.mod h1:ezvh/TsK7cY6rbqRK0oQQ8IAqLxYwwyPxAX1Pzy0ii0=
+k8s.io/gengo v0.0.0-20201113003025-83324d819ded h1:JApXBKYyB7l9xx+DK7/+mFjC7A9Bt5A93FPvFD0HIFE=
+k8s.io/gengo v0.0.0-20201113003025-83324d819ded/go.mod h1:FiNAH4ZV3gBg2Kwh89tzAEV2be7d5xI0vBa/VySYy3E=
+k8s.io/klog/v2 v2.0.0 h1:Foj74zO6RbjjP4hBEKjnYtjjAhGg4jNynUdYF6fJrok=
+k8s.io/klog/v2 v2.0.0/go.mod h1:PBfzABfn139FHAV07az/IF9Wp1bkk3vpT2XSJ76fSDE=
+k8s.io/klog/v2 v2.2.0 h1:XRvcwJozkgZ1UQJmfMGpvRthQHOvihEhYtDfAaxMz/A=
+k8s.io/klog/v2 v2.2.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
+k8s.io/klog/v2 v2.4.0 h1:7+X0fUguPyrKEC4WjH8iGDg3laWgMo5tMnRTIGTTxGQ=
+k8s.io/klog/v2 v2.4.0/go.mod h1:Od+F08eJP+W3HUb4pSrPpgp9DGU4GzlpG/TmITuYh/Y=
+k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd h1:sOHNzJIkytDF6qadMNKhhDRpc6ODik8lVC6nOur7B2c=
+k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd/go.mod h1:WOJ3KddDSol4tAGcJo0Tvi+dK12EcqSLqcWsryKMpfM=
+k8s.io/utils v0.0.0-20201110183641-67b214c5f920 h1:CbnUZsM497iRC5QMVkHwyl8s2tB3g7yaSHkYPkpgelw=
+k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
+rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
+rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
+rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=
+sigs.k8s.io/apiserver-network-proxy/konnectivity-client v0.0.14/go.mod h1:LEScyzhFmoF5pso/YSeBstl57mOzx9xlU9n85RGrDQg=
+sigs.k8s.io/structured-merge-diff/v4 v4.0.2 h1:YHQV7Dajm86OuqnIR6zAelnDWBRjo+YhYV9PmGrh1s8=
+sigs.k8s.io/structured-merge-diff/v4 v4.0.2/go.mod h1:bJZC9H9iH24zzfZ/41RGcq60oK1F7G282QMXDPYydCw=
+sigs.k8s.io/yaml v1.1.0/go.mod h1:UJmg0vDUVViEyp3mgSv9WPwZCDxu4rQW1olrI1uml+o=
+sigs.k8s.io/yaml v1.2.0 h1:kr/MCeFWJWTwyaHoR9c8EjH9OumOmoF9YGiZd7lFm/Q=
+sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=

hack/.spelling_failures

@@ -0,0 +1,6 @@
+BUILD
+CHANGELOG
+OWNERS
+go.mod
+go.sum
+vendor/

hack/kind_config.yaml

@@ -0,0 +1,6 @@
+kind: Cluster
+apiVersion: kind.x-k8s.io/v1alpha4
+nodes:
+- role: control-plane
+- role: worker
+- role: worker

hack/lib/init.sh

@@ -43,5 +43,5 @@ OS_ROOT="$( os::util::absolute_path "${init_source}" )"
 export OS_ROOT
 cd "${OS_ROOT}"
 
-PRJ_PREFIX="github.com/${REPO_ORG:-kubernetes-incubator}/descheduler"
+PRJ_PREFIX="sigs.k8s.io/descheduler"
 OS_OUTPUT_BINPATH="${OS_ROOT}/_output/bin"

hack/tools.go

@@ -0,0 +1,25 @@
+// +build tools
+
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// This package imports things required by build scripts, to force `go mod` to see them as dependencies
+package tools
+
+import (
+	_ "github.com/client9/misspell/cmd/misspell"
+	_ "k8s.io/code-generator"
+)

hack/update-codecgen.sh

@@ -1,151 +0,0 @@
-#!/bin/bash
-
-# Copyright 2015 The Kubernetes Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-set -o errexit
-set -o nounset
-set -o pipefail
-
-KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
-
-# The sort at the end makes sure we feed the topological sort a deterministic
-# list (since there aren't many dependencies).
-
-generated_files=($(
-  find . -not \( \
-      \( \
-        -wholename './output' \
-        -o -wholename './_output' \
-        -o -wholename './staging' \
-        -o -wholename './release' \
-        -o -wholename './target' \
-        -o -wholename '*/third_party/*' \
-        -o -wholename '*/vendor/*' \
-        -o -wholename '*/codecgen-*-1234.generated.go' \
-      \) -prune \
-    \) -name '*.generated.go' | LC_ALL=C sort -r
-))
-
-# We only work for deps within this prefix.
-#my_prefix="k8s.io/kubernetes"
-my_prefix="github.com/${REPO_ORG:-kubernetes-incubator}/descheduler"
-
-# Register function to be called on EXIT to remove codecgen
-# binary and also to touch the files that should be regenerated
-# since they are first removed.
-# This is necessary to make the script work after previous failure.
-function cleanup {
-  rm -f "${CODECGEN:-}"
-  pushd "${KUBE_ROOT}" > /dev/null
-  for (( i=0; i < number; i++ )); do
-    touch "${generated_files[${i}]}" || true
-  done
-  popd > /dev/null
-}
-trap cleanup EXIT
-
-# Precompute dependencies for all directories.
-# Then sort all files in the dependency order.
-number=${#generated_files[@]}
-result=""
-for (( i=0; i<number; i++ )); do
-  visited[${i}]=false
-  file="${generated_files[${i}]/\.generated\.go/.go}"
-  deps[${i}]=$(go list -f '{{range .Deps}}{{.}}{{"\n"}}{{end}}' ${file} | grep "^${my_prefix}")
-done
-###echo "DBG: found $number generated files"
-###for f in $(echo "${generated_files[@]}" | LC_ALL=C sort); do
-###    echo "DBG:   $f"
-###done
-
-# NOTE: depends function assumes that the whole repository is under
-# $my_prefix - it will NOT work if that is not true.
-function depends {
-  rhs="$(dirname ${generated_files[$2]/#./${my_prefix}})"
-  ###echo "DBG: does ${file} depend on ${rhs}?"
-  for dep in ${deps[$1]}; do
-    ###echo "DBG:   checking against $dep"
-    if [[ "${dep}" == "${rhs}" ]]; then
-      ###echo "DBG: = yes"
-      return 0
-    fi
-  done
-  ###echo "DBG: = no"
-  return 1
-}
-
-function tsort {
-  visited[$1]=true
-  local j=0
-  for (( j=0; j<number; j++ )); do
-    if ! ${visited[${j}]}; then
-      if depends "$1" ${j}; then
-        tsort $j
-      fi
-    fi
-  done
-  result="${result} $1"
-}
-echo "Building dependencies"
-for (( i=0; i<number; i++ )); do
-  ###echo "DBG: considering ${generated_files[${i}]}"
-  if ! ${visited[${i}]}; then
-    ###echo "DBG: tsorting ${generated_files[${i}]}"
-    tsort ${i}
-  fi
-done
-index=(${result})
-
-haveindex=${index:-}
-if [[ -z ${haveindex} ]]; then
-  echo No files found for $0
-  echo A previous run of $0 may have deleted all the files and then crashed.
-  echo Use 'touch' to create files named 'types.generated.go' listed as deleted in 'git status'
-  exit 1
-fi
-
-echo "Building codecgen"
-CODECGEN="${PWD}/codecgen_binary"
-go build -o "${CODECGEN}" ./vendor/github.com/ugorji/go/codec/codecgen
-
-# Running codecgen fails if some of the files doesn't compile.
-# Thus (since all the files are completely auto-generated and
-# not required for the code to be compilable, we first remove
-# them and the regenerate them.
-for (( i=0; i < number; i++ )); do
-  rm -f "${generated_files[${i}]}"
-done
-
-# Generate files in the dependency order.
-for current in "${index[@]}"; do
-  generated_file=${generated_files[${current}]}
-  initial_dir=${PWD}
-  file=${generated_file/\.generated\.go/.go}
-  echo "processing ${file}"
-  # codecgen work only if invoked from directory where the file
-  # is located.
-  pushd "$(dirname ${file})" > /dev/null
-  base_file=$(basename "${file}")
-  base_generated_file=$(basename "${generated_file}")
-  # We use '-d 1234' flag to have a deterministic output every time.
-  # The constant was just randomly chosen.
-  ###echo "DBG: running ${CODECGEN} -d 1234 -o ${base_generated_file} ${base_file}"
-  ${CODECGEN} -d 1234 -o "${base_generated_file}" "${base_file}"
-  # Add boilerplate at the beginning of the generated file.
-  sed 's/YEAR/2017/' "${initial_dir}/hack/boilerplate/boilerplate.go.txt" > "${base_generated_file}.tmp"
-  cat "${base_generated_file}" >> "${base_generated_file}.tmp"
-  mv "${base_generated_file}.tmp" "${base_generated_file}"
-  popd > /dev/null
-done

hack/update-generated-conversions.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 source "$(dirname "${BASH_SOURCE}")/lib/init.sh"
 
-go build -o "${OS_OUTPUT_BINPATH}/conversion-gen" "${PRJ_PREFIX}/vendor/k8s.io/code-generator/cmd/conversion-gen"
+go build -o "${OS_OUTPUT_BINPATH}/conversion-gen" "k8s.io/code-generator/cmd/conversion-gen"
 
 ${OS_OUTPUT_BINPATH}/conversion-gen \
 		--go-header-file "hack/boilerplate/boilerplate.go.txt" \

hack/update-generated-deep-copies.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 source "$(dirname "${BASH_SOURCE}")/lib/init.sh"
 
-go build -o "${OS_OUTPUT_BINPATH}/deepcopy-gen" "${PRJ_PREFIX}/vendor/k8s.io/code-generator/cmd/deepcopy-gen"
+go build -o "${OS_OUTPUT_BINPATH}/deepcopy-gen" "k8s.io/code-generator/cmd/deepcopy-gen"
 
 ${OS_OUTPUT_BINPATH}/deepcopy-gen \
                 --go-header-file "hack/boilerplate/boilerplate.go.txt" \

hack/update-generated-defaulters.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 source "$(dirname "${BASH_SOURCE}")/lib/init.sh"
 
-go build -o "${OS_OUTPUT_BINPATH}/defaulter-gen" "${PRJ_PREFIX}/vendor/k8s.io/code-generator/cmd/defaulter-gen"
+go build -o "${OS_OUTPUT_BINPATH}/defaulter-gen" "k8s.io/code-generator/cmd/defaulter-gen"
 
 ${OS_OUTPUT_BINPATH}/defaulter-gen \
                 --go-header-file "hack/boilerplate/boilerplate.go.txt" \

hack/update-gofmt.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# Copyright 2017 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+DESCHEDULER_ROOT=$(dirname "${BASH_SOURCE}")/..
+
+GO_VERSION=($(go version))
+
+if [[ -z $(echo "${GO_VERSION[2]}" | grep -E 'go1.13|go1.14|go1.15') ]]; then
+  echo "Unknown go version '${GO_VERSION[2]}', skipping gofmt."
+  exit 1
+fi
+
+cd "${DESCHEDULER_ROOT}"
+
+find_files() {
+  find . -not \( \
+      \( \
+        -wholename './output' \
+        -o -wholename './_output' \
+        -o -wholename './release' \
+        -o -wholename './target' \
+        -o -wholename './.git' \
+        -o -wholename '*/third_party/*' \
+        -o -wholename '*/Godeps/*' \
+        -o -wholename '*/vendor/*' \
+      \) -prune \
+    \) -name '*.go'
+}
+
+GOFMT="gofmt -s -w"
+find_files | xargs $GOFMT -l

hack/update-vendor.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Copyright 2020 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+source "$(dirname "${BASH_SOURCE}")/lib/init.sh"
+
+go mod tidy
+go mod vendor

hack/verify-gofmt.sh

@@ -23,8 +23,8 @@ DESCHEDULER_ROOT=$(dirname "${BASH_SOURCE}")/..
 
 GO_VERSION=($(go version))
 
-if [[ -z $(echo "${GO_VERSION[2]}" | grep -E 'go1.2|go1.3|go1.4|go1.5|go1.6|go1.7|go1.8|go1.9|go1.10') ]]; then
-  echo "Unknown go version '${GO_VERSION}', skipping gofmt."
+if [[ -z $(echo "${GO_VERSION[2]}" | grep -E 'go1.13|go1.14|go1.15') ]]; then
+  echo "Unknown go version '${GO_VERSION[2]}', skipping gofmt."
   exit 1
 fi
 
@@ -45,7 +45,7 @@ find_files() {
     \) -name '*.go'
 }
 
-GOFMT="gofmt -s" 
+GOFMT="gofmt -s"
 bad_files=$(find_files | xargs $GOFMT -l)
 if [[ -n "${bad_files}" ]]; then
   echo "!!! '$GOFMT' needs to be run on the following files: "

hack/verify-spelling.sh

@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+# Copyright 2018 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This script checks commonly misspelled English words in all files in the
+# working directory by client9/misspell package.
+# Usage: `hack/verify-spelling.sh`.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+export KUBE_ROOT
+source "${KUBE_ROOT}/hack/lib/init.sh"
+
+# Ensure that we find the binaries we build before anything else.
+export GOBIN="${OS_OUTPUT_BINPATH}"
+PATH="${GOBIN}:${PATH}"
+
+# Install tools we need
+pushd "${KUBE_ROOT}" >/dev/null
+  GO111MODULE=on go install github.com/client9/misspell/cmd/misspell
+popd >/dev/null
+
+# Spell checking
+# All the skipping files are defined in hack/.spelling_failures
+skipping_file="${KUBE_ROOT}/hack/.spelling_failures"
+failing_packages=$(sed "s| | -e |g" "${skipping_file}")
+git ls-files | grep -v -e "${failing_packages}" | xargs misspell -i "Creater,creater,ect" -error -o stderr

hack/verify-vendor.sh

@@ -0,0 +1,88 @@
+#!/bin/bash
+
+# Copyright 2020 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is mostly copied from the hack/verify-vendor.sh script located in k8s.io/kubernetes
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+source "$(dirname "${BASH_SOURCE}")/lib/init.sh"
+
+DESCHEDULER_ROOT=$(dirname "${BASH_SOURCE}")/..
+
+mkdir -p "${DESCHEDULER_ROOT}/_tmp"
+_tmpdir="$(mktemp -d "${DESCHEDULER_ROOT}/_tmp/kube-vendor.XXXXXX")"
+
+if [[ -z ${KEEP_TMP:-} ]]; then
+    KEEP_TMP=false
+fi
+
+function cleanup {
+  # make go module dirs writeable
+  chmod -R +w "${_tmpdir}"
+  if [ "${KEEP_TMP}" == "true" ]; then
+    echo "Leaving ${_tmpdir} for you to examine or copy. Please delete it manually when finished. (rm -rf ${_tmpdir})"
+  else
+    echo "Removing ${_tmpdir}"
+    rm -rf "${_tmpdir}"
+  fi
+}
+trap "cleanup" EXIT
+
+_deschedulertmp="${_tmpdir}"
+mkdir -p "${_deschedulertmp}"
+
+git archive --format=tar --prefix=descheduler/ "$(git write-tree)" | (cd "${_deschedulertmp}" && tar xf -)
+_deschedulertmp="${_deschedulertmp}/descheduler"
+
+pushd "${_deschedulertmp}" > /dev/null 2>&1
+  # Destroy deps in the copy of the kube tree
+  rm -rf ./vendor
+
+  # Recreate the vendor tree using the nice clean set we just downloaded
+  hack/update-vendor.sh
+popd > /dev/null 2>&1
+
+ret=0
+
+pushd "${DESCHEDULER_ROOT}" > /dev/null 2>&1
+  # Test for diffs
+  if ! _out="$(diff -Naupr --ignore-matching-lines='^\s*\"GoVersion\":' go.mod "${_deschedulertmp}/go.mod")"; then
+    echo "Your go.mod file is different:" >&2
+    echo "${_out}" >&2
+    echo "Vendor Verify failed." >&2
+    echo "If you're seeing this locally, run the below command to fix your go.mod:" >&2
+    echo "hack/update-vendor.sh" >&2
+    ret=1
+  fi
+
+  if ! _out="$(diff -Naupr -x "BUILD" -x "AUTHORS*" -x "CONTRIBUTORS*" vendor "${_deschedulertmp}/vendor")"; then
+    echo "Your vendored results are different:" >&2
+    echo "${_out}" >&2
+    echo "Vendor Verify failed." >&2
+    echo "${_out}" > vendordiff.patch
+    echo "If you're seeing this locally, run the below command to fix your directories:" >&2
+    echo "hack/update-vendor.sh" >&2
+    ret=1
+  fi
+popd > /dev/null 2>&1
+
+if [[ ${ret} -gt 0 ]]; then
+  exit ${ret}
+fi
+
+echo "Vendor Verified."

kubernetes/base/configmap.yaml

@@ -0,0 +1,28 @@
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: descheduler-policy-configmap
+  namespace: kube-system
+data:
+  policy.yaml: |
+    apiVersion: "descheduler/v1alpha1"
+    kind: "DeschedulerPolicy"
+    strategies:
+      "RemoveDuplicates":
+         enabled: true
+      "RemovePodsViolatingInterPodAntiAffinity":
+         enabled: true
+      "LowNodeUtilization":
+         enabled: true
+         params:
+           nodeResourceUtilizationThresholds:
+             thresholds:
+               "cpu" : 20
+               "memory": 20
+               "pods": 20
+             targetThresholds:
+               "cpu" : 50
+               "memory": 50
+               "pods": 50
+

kubernetes/base/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - configmap.yaml
+  - rbac.yaml

kubernetes/base/rbac.yaml

@@ -0,0 +1,45 @@
+---
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: descheduler-cluster-role
+rules:
+- apiGroups: [""]
+  resources: ["events"]
+  verbs: ["create", "update"]
+- apiGroups: [""]
+  resources: ["nodes"]
+  verbs: ["get", "watch", "list"]
+- apiGroups: [""]
+  resources: ["namespaces"]
+  verbs: ["get", "list"]
+- apiGroups: [""]
+  resources: ["pods"]
+  verbs: ["get", "watch", "list", "delete"]
+- apiGroups: [""]
+  resources: ["pods/eviction"]
+  verbs: ["create"]
+- apiGroups: ["scheduling.k8s.io"]
+  resources: ["priorityclasses"]
+  verbs: ["get", "watch", "list"]
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: descheduler-sa
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRoleBinding
+metadata:
+  name: descheduler-cluster-role-binding
+  namespace: kube-system
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: descheduler-cluster-role
+subjects:
+  - name: descheduler-sa
+    kind: ServiceAccount
+    namespace: kube-system
+

kubernetes/configmap.yaml

@@ -1,27 +0,0 @@
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: descheduler-policy-configmap
-  namespace: kube-system
-data:
-  policy.yaml: |
-    apiVersion: "descheduler/v1alpha1"
-    kind: "DeschedulerPolicy"
-    strategies:
-      "RemoveDuplicates":
-         enabled: true
-      "RemovePodsViolatingInterPodAntiAffinity":
-         enabled: true
-      "LowNodeUtilization":
-         enabled: true
-         params:
-           nodeResourceUtilizationThresholds:
-             thresholds:
-               "cpu" : 20
-               "memory": 20
-               "pods": 20
-             targetThresholds:
-               "cpu" : 50
-               "memory": 50
-               "pods": 50
-

kubernetes/cronjob/cronjob.yaml

@@ -0,0 +1,39 @@
+---
+apiVersion: batch/v1beta1
+kind: CronJob
+metadata:
+  name: descheduler-cronjob
+  namespace: kube-system
+spec:
+  schedule: "*/2 * * * *"
+  concurrencyPolicy: "Forbid"
+  jobTemplate:
+    spec:
+      template:
+        metadata:
+          name: descheduler-pod
+        spec:
+          priorityClassName: system-cluster-critical
+          containers:
+          - name: descheduler
+            image: k8s.gcr.io/descheduler/descheduler:v0.20.0
+            volumeMounts:
+            - mountPath: /policy-dir
+              name: policy-volume
+            command:
+              - "/bin/descheduler"
+            args:
+              - "--policy-config-file"
+              - "/policy-dir/policy.yaml"
+              - "--v"
+              - "3"
+            resources:
+              requests:
+                cpu: "500m"
+                memory: "256Mi"
+          restartPolicy: "Never"
+          serviceAccountName: descheduler-sa
+          volumes:
+          - name: policy-volume
+            configMap:
+              name: descheduler-policy-configmap

kubernetes/cronjob/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - ../base
+  - cronjob.yaml

kubernetes/job.yaml

@@ -1,33 +0,0 @@
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: descheduler-job
-  namespace: kube-system
-spec:
-  parallelism: 1
-  completions: 1
-  template:
-    metadata:
-      name: descheduler-pod
-      annotations:
-        scheduler.alpha.kubernetes.io/critical-pod: ""
-    spec:
-        containers:
-        - name: descheduler
-          image: descheduler:latest
-          volumeMounts:
-          - mountPath: /policy-dir
-            name: policy-volume
-          command:
-            - "/bin/descheduler"
-          args:
-            - "--policy-config-file"
-            - "/policy-dir/policy.yaml"
-            - "--v"
-            - "3"
-        restartPolicy: "Never"
-        serviceAccountName: descheduler-sa
-        volumes:
-        - name: policy-volume
-          configMap:
-            name: descheduler-policy-configmap

kubernetes/job/job.yaml

@@ -0,0 +1,37 @@
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: descheduler-job
+  namespace: kube-system
+spec:
+  parallelism: 1
+  completions: 1
+  template:
+    metadata:
+      name: descheduler-pod
+    spec:
+      priorityClassName: system-cluster-critical
+      containers:
+        - name: descheduler
+          image: k8s.gcr.io/descheduler/descheduler:v0.20.0
+          volumeMounts:
+          - mountPath: /policy-dir
+            name: policy-volume
+          command:
+            - "/bin/descheduler"
+          args:
+            - "--policy-config-file"
+            - "/policy-dir/policy.yaml"
+            - "--v"
+            - "3"
+          resources:
+            requests:
+              cpu: "500m"
+              memory: "256Mi"
+      restartPolicy: "Never"
+      serviceAccountName: descheduler-sa
+      volumes:
+      - name: policy-volume
+        configMap:
+          name: descheduler-policy-configmap

kubernetes/job/kustomization.yaml

@@ -0,0 +1,6 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - ../base
+  - job.yaml

kubernetes/rbac.yaml

@@ -1,37 +0,0 @@
----
-kind: ClusterRole
-apiVersion: rbac.authorization.k8s.io/v1
-metadata:
-  name: descheduler-cluster-role
-  namespace: kube-system
-rules:
-- apiGroups: [""]
-  resources: ["nodes"]
-  verbs: ["get", "watch", "list"]
-- apiGroups: [""]
-  resources: ["pods"]
-  verbs: ["get", "watch", "list", "delete"]
-- apiGroups: [""]
-  resources: ["pods/eviction"]
-  verbs: ["create"]
----
-apiVersion: v1
-kind: ServiceAccount
-metadata:
-  name: descheduler-sa
-  namespace: kube-system
----
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRoleBinding
-metadata:
-  name: descehduler-cluster-role-binding
-  namespace: kube-system
-roleRef:
-  apiGroup: rbac.authorization.k8s.io
-  kind: ClusterRole
-  name: descheduler-cluster-role
-subjects:
-  - name: descheduler-sa
-    kind: ServiceAccount
-    namespace: kube-system
-

pkg/api/doc.go

@@ -16,4 +16,4 @@ limitations under the License.
 
 // +k8s:deepcopy-gen=package,register
 
-package api // import "github.com/kubernetes-incubator/descheduler/pkg/api"
+package api // import "sigs.k8s.io/descheduler/pkg/api"

pkg/api/install/install.go

@@ -1,48 +0,0 @@
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Package install installs the descheduler's policy API group.
-package install
-
-import (
-	"k8s.io/apimachinery/pkg/apimachinery/announced"
-	"k8s.io/apimachinery/pkg/apimachinery/registered"
-	"k8s.io/apimachinery/pkg/runtime"
-
-	deschedulerapi "github.com/kubernetes-incubator/descheduler/pkg/api"
-	"github.com/kubernetes-incubator/descheduler/pkg/api/v1alpha1"
-	deschedulerscheme "github.com/kubernetes-incubator/descheduler/pkg/descheduler/scheme"
-)
-
-func init() {
-	Install(deschedulerscheme.GroupFactoryRegistry, deschedulerscheme.Registry, deschedulerscheme.Scheme)
-}
-
-// Install registers the API group and adds types to a scheme
-func Install(groupFactoryRegistry announced.APIGroupFactoryRegistry, registry *registered.APIRegistrationManager, scheme *runtime.Scheme) {
-	if err := announced.NewGroupMetaFactory(
-		&announced.GroupMetaFactoryArgs{
-			GroupName:                  deschedulerapi.GroupName,
-			VersionPreferenceOrder:     []string{v1alpha1.SchemeGroupVersion.Version},
-			AddInternalObjectsToScheme: deschedulerapi.AddToScheme,
-		},
-		announced.VersionToSchemeFunc{
-			v1alpha1.SchemeGroupVersion.Version: v1alpha1.AddToScheme,
-		},
-	).Announce(groupFactoryRegistry).RegisterAndEnable(registry, scheme); err != nil {
-		panic(err)
-	}
-}

pkg/api/register.go

@@ -24,6 +24,7 @@ import (
 var (
 	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
 	AddToScheme   = SchemeBuilder.AddToScheme
+	Scheme        = runtime.NewScheme()
 )
 
 // GroupName is the group name use in this package

pkg/api/types.go

@@ -17,7 +17,7 @@ limitations under the License.
 package api
 
 import (
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
@@ -28,6 +28,15 @@ type DeschedulerPolicy struct {
 
 	// Strategies
 	Strategies StrategyList
+
+	// NodeSelector for a set of nodes to operate over
+	NodeSelector *string
+
+	// EvictLocalStoragePods allows pods using local storage to be evicted.
+	EvictLocalStoragePods *bool
+
+	// MaxNoOfPodsToEvictPerNode restricts maximum of pods to be evicted per node.
+	MaxNoOfPodsToEvictPerNode *int
 }
 
 type StrategyName string
@@ -41,13 +50,28 @@ type DeschedulerStrategy struct {
 	Weight int
 
 	// Strategy parameters
-	Params StrategyParameters
+	Params *StrategyParameters
 }
 
-// Only one of its members may be specified
+// Namespaces carries a list of included/excluded namespaces
+// for which a given strategy is applicable
+type Namespaces struct {
+	Include []string
+	Exclude []string
+}
+
+// Besides Namespaces only one of its members may be specified
+// TODO(jchaloup): move Namespaces ThresholdPriority and ThresholdPriorityClassName to individual strategies
+//  once the policy version is bumped to v1alpha2
 type StrategyParameters struct {
-	NodeResourceUtilizationThresholds NodeResourceUtilizationThresholds
+	NodeResourceUtilizationThresholds *NodeResourceUtilizationThresholds
 	NodeAffinityType                  []string
+	PodsHavingTooManyRestarts         *PodsHavingTooManyRestarts
+	PodLifeTime                       *PodLifeTime
+	RemoveDuplicates                  *RemoveDuplicates
+	Namespaces                        *Namespaces
+	ThresholdPriority                 *int32
+	ThresholdPriorityClassName        string
 }
 
 type Percentage float64
@@ -58,3 +82,17 @@ type NodeResourceUtilizationThresholds struct {
 	TargetThresholds ResourceThresholds
 	NumberOfNodes    int
 }
+
+type PodsHavingTooManyRestarts struct {
+	PodRestartThreshold     int32
+	IncludingInitContainers bool
+}
+
+type RemoveDuplicates struct {
+	ExcludeOwnerKinds []string
+}
+
+type PodLifeTime struct {
+	MaxPodLifeTimeSeconds *uint
+	PodStatusPhases       []string
+}

pkg/api/v1alpha1/doc.go

@@ -15,10 +15,10 @@ limitations under the License.
 */
 
 // +k8s:deepcopy-gen=package,register
-// +k8s:conversion-gen=github.com/kubernetes-incubator/descheduler/pkg/api
+// +k8s:conversion-gen=sigs.k8s.io/descheduler/pkg/api
 // +k8s:defaulter-gen=TypeMeta
 
 // Package v1alpha1 is the v1alpha1 version of the descheduler API
 // +groupName=descheduler
 
-package v1alpha1 // import "github.com/kubernetes-incubator/descheduler/pkg/api/v1alpha1"
+package v1alpha1 // import "sigs.k8s.io/descheduler/pkg/api/v1alpha1"

pkg/api/v1alpha1/types.go

@@ -17,7 +17,7 @@ limitations under the License.
 package v1alpha1
 
 import (
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
@@ -28,6 +28,15 @@ type DeschedulerPolicy struct {
 
 	// Strategies
 	Strategies StrategyList `json:"strategies,omitempty"`
+
+	// NodeSelector for a set of nodes to operate over
+	NodeSelector *string `json:"nodeSelector,omitempty"`
+
+	// EvictLocalStoragePods allows pods using local storage to be evicted.
+	EvictLocalStoragePods *bool `json:"evictLocalStoragePods,omitempty"`
+
+	// MaxNoOfPodsToEvictPerNode restricts maximum of pods to be evicted per node.
+	MaxNoOfPodsToEvictPerNode *int `json:"maxNoOfPodsToEvictPerNode,omitempty"`
 }
 
 type StrategyName string
@@ -41,13 +50,26 @@ type DeschedulerStrategy struct {
 	Weight int `json:"weight,omitempty"`
 
 	// Strategy parameters
-	Params StrategyParameters `json:"params,omitempty"`
+	Params *StrategyParameters `json:"params,omitempty"`
 }
 
-// Only one of its members may be specified
+// Namespaces carries a list of included/excluded namespaces
+// for which a given strategy is applicable.
+type Namespaces struct {
+	Include []string `json:"include"`
+	Exclude []string `json:"exclude"`
+}
+
+// Besides Namespaces ThresholdPriority and ThresholdPriorityClassName only one of its members may be specified
 type StrategyParameters struct {
-	NodeResourceUtilizationThresholds NodeResourceUtilizationThresholds `json:"nodeResourceUtilizationThresholds,omitempty"`
-	NodeAffinityType                  []string                          `json:"nodeAffinityType,omitempty"`
+	NodeResourceUtilizationThresholds *NodeResourceUtilizationThresholds `json:"nodeResourceUtilizationThresholds,omitempty"`
+	NodeAffinityType                  []string                           `json:"nodeAffinityType,omitempty"`
+	PodsHavingTooManyRestarts         *PodsHavingTooManyRestarts         `json:"podsHavingTooManyRestarts,omitempty"`
+	PodLifeTime                       *PodLifeTime                       `json:"podLifeTime,omitempty"`
+	RemoveDuplicates                  *RemoveDuplicates                  `json:"removeDuplicates,omitempty"`
+	Namespaces                        *Namespaces                        `json:"namespaces"`
+	ThresholdPriority                 *int32                             `json:"thresholdPriority"`
+	ThresholdPriorityClassName        string                             `json:"thresholdPriorityClassName"`
 }
 
 type Percentage float64
@@ -58,3 +80,17 @@ type NodeResourceUtilizationThresholds struct {
 	TargetThresholds ResourceThresholds `json:"targetThresholds,omitempty"`
 	NumberOfNodes    int                `json:"numberOfNodes,omitempty"`
 }
+
+type PodsHavingTooManyRestarts struct {
+	PodRestartThreshold     int32 `json:"podRestartThreshold,omitempty"`
+	IncludingInitContainers bool  `json:"includingInitContainers,omitempty"`
+}
+
+type RemoveDuplicates struct {
+	ExcludeOwnerKinds []string `json:"excludeOwnerKinds,omitempty"`
+}
+
+type PodLifeTime struct {
+	MaxPodLifeTimeSeconds *uint    `json:"maxPodLifeTimeSeconds,omitempty"`
+	PodStatusPhases       []string `json:"podStatusPhases,omitempty"`
+}

pkg/api/v1alpha1/zz_generated.conversion.go

@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2018 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,16 +16,16 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// This file was autogenerated by conversion-gen. Do not edit it manually!
+// Code generated by conversion-gen. DO NOT EDIT.
 
 package v1alpha1
 
 import (
 	unsafe "unsafe"
 
-	api "github.com/kubernetes-incubator/descheduler/pkg/api"
 	conversion "k8s.io/apimachinery/pkg/conversion"
 	runtime "k8s.io/apimachinery/pkg/runtime"
+	api "sigs.k8s.io/descheduler/pkg/api"
 )
 
 func init() {
@@ -34,21 +34,95 @@ func init() {
 
 // RegisterConversions adds conversion functions to the given scheme.
 // Public to allow building arbitrary schemes.
-func RegisterConversions(scheme *runtime.Scheme) error {
-	return scheme.AddGeneratedConversionFuncs(
-		Convert_v1alpha1_DeschedulerPolicy_To_api_DeschedulerPolicy,
-		Convert_api_DeschedulerPolicy_To_v1alpha1_DeschedulerPolicy,
-		Convert_v1alpha1_DeschedulerStrategy_To_api_DeschedulerStrategy,
-		Convert_api_DeschedulerStrategy_To_v1alpha1_DeschedulerStrategy,
-		Convert_v1alpha1_NodeResourceUtilizationThresholds_To_api_NodeResourceUtilizationThresholds,
-		Convert_api_NodeResourceUtilizationThresholds_To_v1alpha1_NodeResourceUtilizationThresholds,
-		Convert_v1alpha1_StrategyParameters_To_api_StrategyParameters,
-		Convert_api_StrategyParameters_To_v1alpha1_StrategyParameters,
-	)
+func RegisterConversions(s *runtime.Scheme) error {
+	if err := s.AddGeneratedConversionFunc((*DeschedulerPolicy)(nil), (*api.DeschedulerPolicy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_DeschedulerPolicy_To_api_DeschedulerPolicy(a.(*DeschedulerPolicy), b.(*api.DeschedulerPolicy), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*api.DeschedulerPolicy)(nil), (*DeschedulerPolicy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_api_DeschedulerPolicy_To_v1alpha1_DeschedulerPolicy(a.(*api.DeschedulerPolicy), b.(*DeschedulerPolicy), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*DeschedulerStrategy)(nil), (*api.DeschedulerStrategy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_DeschedulerStrategy_To_api_DeschedulerStrategy(a.(*DeschedulerStrategy), b.(*api.DeschedulerStrategy), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*api.DeschedulerStrategy)(nil), (*DeschedulerStrategy)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_api_DeschedulerStrategy_To_v1alpha1_DeschedulerStrategy(a.(*api.DeschedulerStrategy), b.(*DeschedulerStrategy), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*Namespaces)(nil), (*api.Namespaces)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_Namespaces_To_api_Namespaces(a.(*Namespaces), b.(*api.Namespaces), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*api.Namespaces)(nil), (*Namespaces)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_api_Namespaces_To_v1alpha1_Namespaces(a.(*api.Namespaces), b.(*Namespaces), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*NodeResourceUtilizationThresholds)(nil), (*api.NodeResourceUtilizationThresholds)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_NodeResourceUtilizationThresholds_To_api_NodeResourceUtilizationThresholds(a.(*NodeResourceUtilizationThresholds), b.(*api.NodeResourceUtilizationThresholds), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*api.NodeResourceUtilizationThresholds)(nil), (*NodeResourceUtilizationThresholds)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_api_NodeResourceUtilizationThresholds_To_v1alpha1_NodeResourceUtilizationThresholds(a.(*api.NodeResourceUtilizationThresholds), b.(*NodeResourceUtilizationThresholds), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*PodLifeTime)(nil), (*api.PodLifeTime)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_PodLifeTime_To_api_PodLifeTime(a.(*PodLifeTime), b.(*api.PodLifeTime), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*api.PodLifeTime)(nil), (*PodLifeTime)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_api_PodLifeTime_To_v1alpha1_PodLifeTime(a.(*api.PodLifeTime), b.(*PodLifeTime), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*PodsHavingTooManyRestarts)(nil), (*api.PodsHavingTooManyRestarts)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_PodsHavingTooManyRestarts_To_api_PodsHavingTooManyRestarts(a.(*PodsHavingTooManyRestarts), b.(*api.PodsHavingTooManyRestarts), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*api.PodsHavingTooManyRestarts)(nil), (*PodsHavingTooManyRestarts)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_api_PodsHavingTooManyRestarts_To_v1alpha1_PodsHavingTooManyRestarts(a.(*api.PodsHavingTooManyRestarts), b.(*PodsHavingTooManyRestarts), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*RemoveDuplicates)(nil), (*api.RemoveDuplicates)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_RemoveDuplicates_To_api_RemoveDuplicates(a.(*RemoveDuplicates), b.(*api.RemoveDuplicates), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*api.RemoveDuplicates)(nil), (*RemoveDuplicates)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_api_RemoveDuplicates_To_v1alpha1_RemoveDuplicates(a.(*api.RemoveDuplicates), b.(*RemoveDuplicates), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*StrategyParameters)(nil), (*api.StrategyParameters)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_StrategyParameters_To_api_StrategyParameters(a.(*StrategyParameters), b.(*api.StrategyParameters), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*api.StrategyParameters)(nil), (*StrategyParameters)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_api_StrategyParameters_To_v1alpha1_StrategyParameters(a.(*api.StrategyParameters), b.(*StrategyParameters), scope)
+	}); err != nil {
+		return err
+	}
+	return nil
 }
 
 func autoConvert_v1alpha1_DeschedulerPolicy_To_api_DeschedulerPolicy(in *DeschedulerPolicy, out *api.DeschedulerPolicy, s conversion.Scope) error {
 	out.Strategies = *(*api.StrategyList)(unsafe.Pointer(&in.Strategies))
+	out.NodeSelector = (*string)(unsafe.Pointer(in.NodeSelector))
+	out.EvictLocalStoragePods = (*bool)(unsafe.Pointer(in.EvictLocalStoragePods))
+	out.MaxNoOfPodsToEvictPerNode = (*int)(unsafe.Pointer(in.MaxNoOfPodsToEvictPerNode))
 	return nil
 }
 
@@ -59,6 +133,9 @@ func Convert_v1alpha1_DeschedulerPolicy_To_api_DeschedulerPolicy(in *Descheduler
 
 func autoConvert_api_DeschedulerPolicy_To_v1alpha1_DeschedulerPolicy(in *api.DeschedulerPolicy, out *DeschedulerPolicy, s conversion.Scope) error {
 	out.Strategies = *(*StrategyList)(unsafe.Pointer(&in.Strategies))
+	out.NodeSelector = (*string)(unsafe.Pointer(in.NodeSelector))
+	out.EvictLocalStoragePods = (*bool)(unsafe.Pointer(in.EvictLocalStoragePods))
+	out.MaxNoOfPodsToEvictPerNode = (*int)(unsafe.Pointer(in.MaxNoOfPodsToEvictPerNode))
 	return nil
 }
 
@@ -70,9 +147,7 @@ func Convert_api_DeschedulerPolicy_To_v1alpha1_DeschedulerPolicy(in *api.Desched
 func autoConvert_v1alpha1_DeschedulerStrategy_To_api_DeschedulerStrategy(in *DeschedulerStrategy, out *api.DeschedulerStrategy, s conversion.Scope) error {
 	out.Enabled = in.Enabled
 	out.Weight = in.Weight
-	if err := Convert_v1alpha1_StrategyParameters_To_api_StrategyParameters(&in.Params, &out.Params, s); err != nil {
-		return err
-	}
+	out.Params = (*api.StrategyParameters)(unsafe.Pointer(in.Params))
 	return nil
 }
 
@@ -84,9 +159,7 @@ func Convert_v1alpha1_DeschedulerStrategy_To_api_DeschedulerStrategy(in *Desched
 func autoConvert_api_DeschedulerStrategy_To_v1alpha1_DeschedulerStrategy(in *api.DeschedulerStrategy, out *DeschedulerStrategy, s conversion.Scope) error {
 	out.Enabled = in.Enabled
 	out.Weight = in.Weight
-	if err := Convert_api_StrategyParameters_To_v1alpha1_StrategyParameters(&in.Params, &out.Params, s); err != nil {
-		return err
-	}
+	out.Params = (*StrategyParameters)(unsafe.Pointer(in.Params))
 	return nil
 }
 
@@ -95,6 +168,28 @@ func Convert_api_DeschedulerStrategy_To_v1alpha1_DeschedulerStrategy(in *api.Des
 	return autoConvert_api_DeschedulerStrategy_To_v1alpha1_DeschedulerStrategy(in, out, s)
 }
 
+func autoConvert_v1alpha1_Namespaces_To_api_Namespaces(in *Namespaces, out *api.Namespaces, s conversion.Scope) error {
+	out.Include = *(*[]string)(unsafe.Pointer(&in.Include))
+	out.Exclude = *(*[]string)(unsafe.Pointer(&in.Exclude))
+	return nil
+}
+
+// Convert_v1alpha1_Namespaces_To_api_Namespaces is an autogenerated conversion function.
+func Convert_v1alpha1_Namespaces_To_api_Namespaces(in *Namespaces, out *api.Namespaces, s conversion.Scope) error {
+	return autoConvert_v1alpha1_Namespaces_To_api_Namespaces(in, out, s)
+}
+
+func autoConvert_api_Namespaces_To_v1alpha1_Namespaces(in *api.Namespaces, out *Namespaces, s conversion.Scope) error {
+	out.Include = *(*[]string)(unsafe.Pointer(&in.Include))
+	out.Exclude = *(*[]string)(unsafe.Pointer(&in.Exclude))
+	return nil
+}
+
+// Convert_api_Namespaces_To_v1alpha1_Namespaces is an autogenerated conversion function.
+func Convert_api_Namespaces_To_v1alpha1_Namespaces(in *api.Namespaces, out *Namespaces, s conversion.Scope) error {
+	return autoConvert_api_Namespaces_To_v1alpha1_Namespaces(in, out, s)
+}
+
 func autoConvert_v1alpha1_NodeResourceUtilizationThresholds_To_api_NodeResourceUtilizationThresholds(in *NodeResourceUtilizationThresholds, out *api.NodeResourceUtilizationThresholds, s conversion.Scope) error {
 	out.Thresholds = *(*api.ResourceThresholds)(unsafe.Pointer(&in.Thresholds))
 	out.TargetThresholds = *(*api.ResourceThresholds)(unsafe.Pointer(&in.TargetThresholds))
@@ -119,11 +214,79 @@ func Convert_api_NodeResourceUtilizationThresholds_To_v1alpha1_NodeResourceUtili
 	return autoConvert_api_NodeResourceUtilizationThresholds_To_v1alpha1_NodeResourceUtilizationThresholds(in, out, s)
 }
 
+func autoConvert_v1alpha1_PodLifeTime_To_api_PodLifeTime(in *PodLifeTime, out *api.PodLifeTime, s conversion.Scope) error {
+	out.MaxPodLifeTimeSeconds = (*uint)(unsafe.Pointer(in.MaxPodLifeTimeSeconds))
+	out.PodStatusPhases = *(*[]string)(unsafe.Pointer(&in.PodStatusPhases))
+	return nil
+}
+
+// Convert_v1alpha1_PodLifeTime_To_api_PodLifeTime is an autogenerated conversion function.
+func Convert_v1alpha1_PodLifeTime_To_api_PodLifeTime(in *PodLifeTime, out *api.PodLifeTime, s conversion.Scope) error {
+	return autoConvert_v1alpha1_PodLifeTime_To_api_PodLifeTime(in, out, s)
+}
+
+func autoConvert_api_PodLifeTime_To_v1alpha1_PodLifeTime(in *api.PodLifeTime, out *PodLifeTime, s conversion.Scope) error {
+	out.MaxPodLifeTimeSeconds = (*uint)(unsafe.Pointer(in.MaxPodLifeTimeSeconds))
+	out.PodStatusPhases = *(*[]string)(unsafe.Pointer(&in.PodStatusPhases))
+	return nil
+}
+
+// Convert_api_PodLifeTime_To_v1alpha1_PodLifeTime is an autogenerated conversion function.
+func Convert_api_PodLifeTime_To_v1alpha1_PodLifeTime(in *api.PodLifeTime, out *PodLifeTime, s conversion.Scope) error {
+	return autoConvert_api_PodLifeTime_To_v1alpha1_PodLifeTime(in, out, s)
+}
+
+func autoConvert_v1alpha1_PodsHavingTooManyRestarts_To_api_PodsHavingTooManyRestarts(in *PodsHavingTooManyRestarts, out *api.PodsHavingTooManyRestarts, s conversion.Scope) error {
+	out.PodRestartThreshold = in.PodRestartThreshold
+	out.IncludingInitContainers = in.IncludingInitContainers
+	return nil
+}
+
+// Convert_v1alpha1_PodsHavingTooManyRestarts_To_api_PodsHavingTooManyRestarts is an autogenerated conversion function.
+func Convert_v1alpha1_PodsHavingTooManyRestarts_To_api_PodsHavingTooManyRestarts(in *PodsHavingTooManyRestarts, out *api.PodsHavingTooManyRestarts, s conversion.Scope) error {
+	return autoConvert_v1alpha1_PodsHavingTooManyRestarts_To_api_PodsHavingTooManyRestarts(in, out, s)
+}
+
+func autoConvert_api_PodsHavingTooManyRestarts_To_v1alpha1_PodsHavingTooManyRestarts(in *api.PodsHavingTooManyRestarts, out *PodsHavingTooManyRestarts, s conversion.Scope) error {
+	out.PodRestartThreshold = in.PodRestartThreshold
+	out.IncludingInitContainers = in.IncludingInitContainers
+	return nil
+}
+
+// Convert_api_PodsHavingTooManyRestarts_To_v1alpha1_PodsHavingTooManyRestarts is an autogenerated conversion function.
+func Convert_api_PodsHavingTooManyRestarts_To_v1alpha1_PodsHavingTooManyRestarts(in *api.PodsHavingTooManyRestarts, out *PodsHavingTooManyRestarts, s conversion.Scope) error {
+	return autoConvert_api_PodsHavingTooManyRestarts_To_v1alpha1_PodsHavingTooManyRestarts(in, out, s)
+}
+
+func autoConvert_v1alpha1_RemoveDuplicates_To_api_RemoveDuplicates(in *RemoveDuplicates, out *api.RemoveDuplicates, s conversion.Scope) error {
+	out.ExcludeOwnerKinds = *(*[]string)(unsafe.Pointer(&in.ExcludeOwnerKinds))
+	return nil
+}
+
+// Convert_v1alpha1_RemoveDuplicates_To_api_RemoveDuplicates is an autogenerated conversion function.
+func Convert_v1alpha1_RemoveDuplicates_To_api_RemoveDuplicates(in *RemoveDuplicates, out *api.RemoveDuplicates, s conversion.Scope) error {
+	return autoConvert_v1alpha1_RemoveDuplicates_To_api_RemoveDuplicates(in, out, s)
+}
+
+func autoConvert_api_RemoveDuplicates_To_v1alpha1_RemoveDuplicates(in *api.RemoveDuplicates, out *RemoveDuplicates, s conversion.Scope) error {
+	out.ExcludeOwnerKinds = *(*[]string)(unsafe.Pointer(&in.ExcludeOwnerKinds))
+	return nil
+}
+
+// Convert_api_RemoveDuplicates_To_v1alpha1_RemoveDuplicates is an autogenerated conversion function.
+func Convert_api_RemoveDuplicates_To_v1alpha1_RemoveDuplicates(in *api.RemoveDuplicates, out *RemoveDuplicates, s conversion.Scope) error {
+	return autoConvert_api_RemoveDuplicates_To_v1alpha1_RemoveDuplicates(in, out, s)
+}
+
 func autoConvert_v1alpha1_StrategyParameters_To_api_StrategyParameters(in *StrategyParameters, out *api.StrategyParameters, s conversion.Scope) error {
-	if err := Convert_v1alpha1_NodeResourceUtilizationThresholds_To_api_NodeResourceUtilizationThresholds(&in.NodeResourceUtilizationThresholds, &out.NodeResourceUtilizationThresholds, s); err != nil {
-		return err
-	}
+	out.NodeResourceUtilizationThresholds = (*api.NodeResourceUtilizationThresholds)(unsafe.Pointer(in.NodeResourceUtilizationThresholds))
 	out.NodeAffinityType = *(*[]string)(unsafe.Pointer(&in.NodeAffinityType))
+	out.PodsHavingTooManyRestarts = (*api.PodsHavingTooManyRestarts)(unsafe.Pointer(in.PodsHavingTooManyRestarts))
+	out.PodLifeTime = (*api.PodLifeTime)(unsafe.Pointer(in.PodLifeTime))
+	out.RemoveDuplicates = (*api.RemoveDuplicates)(unsafe.Pointer(in.RemoveDuplicates))
+	out.Namespaces = (*api.Namespaces)(unsafe.Pointer(in.Namespaces))
+	out.ThresholdPriority = (*int32)(unsafe.Pointer(in.ThresholdPriority))
+	out.ThresholdPriorityClassName = in.ThresholdPriorityClassName
 	return nil
 }
 
@@ -133,10 +296,14 @@ func Convert_v1alpha1_StrategyParameters_To_api_StrategyParameters(in *StrategyP
 }
 
 func autoConvert_api_StrategyParameters_To_v1alpha1_StrategyParameters(in *api.StrategyParameters, out *StrategyParameters, s conversion.Scope) error {
-	if err := Convert_api_NodeResourceUtilizationThresholds_To_v1alpha1_NodeResourceUtilizationThresholds(&in.NodeResourceUtilizationThresholds, &out.NodeResourceUtilizationThresholds, s); err != nil {
-		return err
-	}
+	out.NodeResourceUtilizationThresholds = (*NodeResourceUtilizationThresholds)(unsafe.Pointer(in.NodeResourceUtilizationThresholds))
 	out.NodeAffinityType = *(*[]string)(unsafe.Pointer(&in.NodeAffinityType))
+	out.PodsHavingTooManyRestarts = (*PodsHavingTooManyRestarts)(unsafe.Pointer(in.PodsHavingTooManyRestarts))
+	out.PodLifeTime = (*PodLifeTime)(unsafe.Pointer(in.PodLifeTime))
+	out.RemoveDuplicates = (*RemoveDuplicates)(unsafe.Pointer(in.RemoveDuplicates))
+	out.Namespaces = (*Namespaces)(unsafe.Pointer(in.Namespaces))
+	out.ThresholdPriority = (*int32)(unsafe.Pointer(in.ThresholdPriority))
+	out.ThresholdPriorityClassName = in.ThresholdPriorityClassName
 	return nil
 }
 

pkg/api/v1alpha1/zz_generated.deepcopy.go

@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2018 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// This file was autogenerated by deepcopy-gen. Do not edit it manually!
+// Code generated by deepcopy-gen. DO NOT EDIT.
 
 package v1alpha1
 
@@ -32,11 +32,24 @@ func (in *DeschedulerPolicy) DeepCopyInto(out *DeschedulerPolicy) {
 		in, out := &in.Strategies, &out.Strategies
 		*out = make(StrategyList, len(*in))
 		for key, val := range *in {
-			newVal := new(DeschedulerStrategy)
-			val.DeepCopyInto(newVal)
-			(*out)[key] = *newVal
+			(*out)[key] = *val.DeepCopy()
 		}
 	}
+	if in.NodeSelector != nil {
+		in, out := &in.NodeSelector, &out.NodeSelector
+		*out = new(string)
+		**out = **in
+	}
+	if in.EvictLocalStoragePods != nil {
+		in, out := &in.EvictLocalStoragePods, &out.EvictLocalStoragePods
+		*out = new(bool)
+		**out = **in
+	}
+	if in.MaxNoOfPodsToEvictPerNode != nil {
+		in, out := &in.MaxNoOfPodsToEvictPerNode, &out.MaxNoOfPodsToEvictPerNode
+		*out = new(int)
+		**out = **in
+	}
 	return
 }
 
@@ -54,15 +67,18 @@ func (in *DeschedulerPolicy) DeepCopy() *DeschedulerPolicy {
 func (in *DeschedulerPolicy) DeepCopyObject() runtime.Object {
 	if c := in.DeepCopy(); c != nil {
 		return c
-	} else {
-		return nil
 	}
+	return nil
 }
 
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *DeschedulerStrategy) DeepCopyInto(out *DeschedulerStrategy) {
 	*out = *in
-	in.Params.DeepCopyInto(&out.Params)
+	if in.Params != nil {
+		in, out := &in.Params, &out.Params
+		*out = new(StrategyParameters)
+		(*in).DeepCopyInto(*out)
+	}
 	return
 }
 
@@ -76,6 +92,32 @@ func (in *DeschedulerStrategy) DeepCopy() *DeschedulerStrategy {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Namespaces) DeepCopyInto(out *Namespaces) {
+	*out = *in
+	if in.Include != nil {
+		in, out := &in.Include, &out.Include
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	if in.Exclude != nil {
+		in, out := &in.Exclude, &out.Exclude
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Namespaces.
+func (in *Namespaces) DeepCopy() *Namespaces {
+	if in == nil {
+		return nil
+	}
+	out := new(Namespaces)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *NodeResourceUtilizationThresholds) DeepCopyInto(out *NodeResourceUtilizationThresholds) {
 	*out = *in
@@ -106,15 +148,151 @@ func (in *NodeResourceUtilizationThresholds) DeepCopy() *NodeResourceUtilization
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *PodLifeTime) DeepCopyInto(out *PodLifeTime) {
+	*out = *in
+	if in.MaxPodLifeTimeSeconds != nil {
+		in, out := &in.MaxPodLifeTimeSeconds, &out.MaxPodLifeTimeSeconds
+		*out = new(uint)
+		**out = **in
+	}
+	if in.PodStatusPhases != nil {
+		in, out := &in.PodStatusPhases, &out.PodStatusPhases
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodLifeTime.
+func (in *PodLifeTime) DeepCopy() *PodLifeTime {
+	if in == nil {
+		return nil
+	}
+	out := new(PodLifeTime)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *PodsHavingTooManyRestarts) DeepCopyInto(out *PodsHavingTooManyRestarts) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodsHavingTooManyRestarts.
+func (in *PodsHavingTooManyRestarts) DeepCopy() *PodsHavingTooManyRestarts {
+	if in == nil {
+		return nil
+	}
+	out := new(PodsHavingTooManyRestarts)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *RemoveDuplicates) DeepCopyInto(out *RemoveDuplicates) {
+	*out = *in
+	if in.ExcludeOwnerKinds != nil {
+		in, out := &in.ExcludeOwnerKinds, &out.ExcludeOwnerKinds
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new RemoveDuplicates.
+func (in *RemoveDuplicates) DeepCopy() *RemoveDuplicates {
+	if in == nil {
+		return nil
+	}
+	out := new(RemoveDuplicates)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in ResourceThresholds) DeepCopyInto(out *ResourceThresholds) {
+	{
+		in := &in
+		*out = make(ResourceThresholds, len(*in))
+		for key, val := range *in {
+			(*out)[key] = val
+		}
+		return
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ResourceThresholds.
+func (in ResourceThresholds) DeepCopy() ResourceThresholds {
+	if in == nil {
+		return nil
+	}
+	out := new(ResourceThresholds)
+	in.DeepCopyInto(out)
+	return *out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in StrategyList) DeepCopyInto(out *StrategyList) {
+	{
+		in := &in
+		*out = make(StrategyList, len(*in))
+		for key, val := range *in {
+			(*out)[key] = *val.DeepCopy()
+		}
+		return
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StrategyList.
+func (in StrategyList) DeepCopy() StrategyList {
+	if in == nil {
+		return nil
+	}
+	out := new(StrategyList)
+	in.DeepCopyInto(out)
+	return *out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *StrategyParameters) DeepCopyInto(out *StrategyParameters) {
 	*out = *in
-	in.NodeResourceUtilizationThresholds.DeepCopyInto(&out.NodeResourceUtilizationThresholds)
+	if in.NodeResourceUtilizationThresholds != nil {
+		in, out := &in.NodeResourceUtilizationThresholds, &out.NodeResourceUtilizationThresholds
+		*out = new(NodeResourceUtilizationThresholds)
+		(*in).DeepCopyInto(*out)
+	}
 	if in.NodeAffinityType != nil {
 		in, out := &in.NodeAffinityType, &out.NodeAffinityType
 		*out = make([]string, len(*in))
 		copy(*out, *in)
 	}
+	if in.PodsHavingTooManyRestarts != nil {
+		in, out := &in.PodsHavingTooManyRestarts, &out.PodsHavingTooManyRestarts
+		*out = new(PodsHavingTooManyRestarts)
+		**out = **in
+	}
+	if in.PodLifeTime != nil {
+		in, out := &in.PodLifeTime, &out.PodLifeTime
+		*out = new(PodLifeTime)
+		(*in).DeepCopyInto(*out)
+	}
+	if in.RemoveDuplicates != nil {
+		in, out := &in.RemoveDuplicates, &out.RemoveDuplicates
+		*out = new(RemoveDuplicates)
+		(*in).DeepCopyInto(*out)
+	}
+	if in.Namespaces != nil {
+		in, out := &in.Namespaces, &out.Namespaces
+		*out = new(Namespaces)
+		(*in).DeepCopyInto(*out)
+	}
+	if in.ThresholdPriority != nil {
+		in, out := &in.ThresholdPriority, &out.ThresholdPriority
+		*out = new(int32)
+		**out = **in
+	}
 	return
 }
 

pkg/api/v1alpha1/zz_generated.defaults.go

@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2018 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// This file was autogenerated by defaulter-gen. Do not edit it manually!
+// Code generated by defaulter-gen. DO NOT EDIT.
 
 package v1alpha1
 

pkg/api/zz_generated.deepcopy.go

@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2018 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// This file was autogenerated by deepcopy-gen. Do not edit it manually!
+// Code generated by deepcopy-gen. DO NOT EDIT.
 
 package api
 
@@ -32,11 +32,24 @@ func (in *DeschedulerPolicy) DeepCopyInto(out *DeschedulerPolicy) {
 		in, out := &in.Strategies, &out.Strategies
 		*out = make(StrategyList, len(*in))
 		for key, val := range *in {
-			newVal := new(DeschedulerStrategy)
-			val.DeepCopyInto(newVal)
-			(*out)[key] = *newVal
+			(*out)[key] = *val.DeepCopy()
 		}
 	}
+	if in.NodeSelector != nil {
+		in, out := &in.NodeSelector, &out.NodeSelector
+		*out = new(string)
+		**out = **in
+	}
+	if in.EvictLocalStoragePods != nil {
+		in, out := &in.EvictLocalStoragePods, &out.EvictLocalStoragePods
+		*out = new(bool)
+		**out = **in
+	}
+	if in.MaxNoOfPodsToEvictPerNode != nil {
+		in, out := &in.MaxNoOfPodsToEvictPerNode, &out.MaxNoOfPodsToEvictPerNode
+		*out = new(int)
+		**out = **in
+	}
 	return
 }
 
@@ -54,15 +67,18 @@ func (in *DeschedulerPolicy) DeepCopy() *DeschedulerPolicy {
 func (in *DeschedulerPolicy) DeepCopyObject() runtime.Object {
 	if c := in.DeepCopy(); c != nil {
 		return c
-	} else {
-		return nil
 	}
+	return nil
 }
 
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *DeschedulerStrategy) DeepCopyInto(out *DeschedulerStrategy) {
 	*out = *in
-	in.Params.DeepCopyInto(&out.Params)
+	if in.Params != nil {
+		in, out := &in.Params, &out.Params
+		*out = new(StrategyParameters)
+		(*in).DeepCopyInto(*out)
+	}
 	return
 }
 
@@ -76,6 +92,32 @@ func (in *DeschedulerStrategy) DeepCopy() *DeschedulerStrategy {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Namespaces) DeepCopyInto(out *Namespaces) {
+	*out = *in
+	if in.Include != nil {
+		in, out := &in.Include, &out.Include
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	if in.Exclude != nil {
+		in, out := &in.Exclude, &out.Exclude
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Namespaces.
+func (in *Namespaces) DeepCopy() *Namespaces {
+	if in == nil {
+		return nil
+	}
+	out := new(Namespaces)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *NodeResourceUtilizationThresholds) DeepCopyInto(out *NodeResourceUtilizationThresholds) {
 	*out = *in
@@ -106,15 +148,151 @@ func (in *NodeResourceUtilizationThresholds) DeepCopy() *NodeResourceUtilization
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *PodLifeTime) DeepCopyInto(out *PodLifeTime) {
+	*out = *in
+	if in.MaxPodLifeTimeSeconds != nil {
+		in, out := &in.MaxPodLifeTimeSeconds, &out.MaxPodLifeTimeSeconds
+		*out = new(uint)
+		**out = **in
+	}
+	if in.PodStatusPhases != nil {
+		in, out := &in.PodStatusPhases, &out.PodStatusPhases
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodLifeTime.
+func (in *PodLifeTime) DeepCopy() *PodLifeTime {
+	if in == nil {
+		return nil
+	}
+	out := new(PodLifeTime)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *PodsHavingTooManyRestarts) DeepCopyInto(out *PodsHavingTooManyRestarts) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PodsHavingTooManyRestarts.
+func (in *PodsHavingTooManyRestarts) DeepCopy() *PodsHavingTooManyRestarts {
+	if in == nil {
+		return nil
+	}
+	out := new(PodsHavingTooManyRestarts)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *RemoveDuplicates) DeepCopyInto(out *RemoveDuplicates) {
+	*out = *in
+	if in.ExcludeOwnerKinds != nil {
+		in, out := &in.ExcludeOwnerKinds, &out.ExcludeOwnerKinds
+		*out = make([]string, len(*in))
+		copy(*out, *in)
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new RemoveDuplicates.
+func (in *RemoveDuplicates) DeepCopy() *RemoveDuplicates {
+	if in == nil {
+		return nil
+	}
+	out := new(RemoveDuplicates)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in ResourceThresholds) DeepCopyInto(out *ResourceThresholds) {
+	{
+		in := &in
+		*out = make(ResourceThresholds, len(*in))
+		for key, val := range *in {
+			(*out)[key] = val
+		}
+		return
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new ResourceThresholds.
+func (in ResourceThresholds) DeepCopy() ResourceThresholds {
+	if in == nil {
+		return nil
+	}
+	out := new(ResourceThresholds)
+	in.DeepCopyInto(out)
+	return *out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in StrategyList) DeepCopyInto(out *StrategyList) {
+	{
+		in := &in
+		*out = make(StrategyList, len(*in))
+		for key, val := range *in {
+			(*out)[key] = *val.DeepCopy()
+		}
+		return
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new StrategyList.
+func (in StrategyList) DeepCopy() StrategyList {
+	if in == nil {
+		return nil
+	}
+	out := new(StrategyList)
+	in.DeepCopyInto(out)
+	return *out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *StrategyParameters) DeepCopyInto(out *StrategyParameters) {
 	*out = *in
-	in.NodeResourceUtilizationThresholds.DeepCopyInto(&out.NodeResourceUtilizationThresholds)
+	if in.NodeResourceUtilizationThresholds != nil {
+		in, out := &in.NodeResourceUtilizationThresholds, &out.NodeResourceUtilizationThresholds
+		*out = new(NodeResourceUtilizationThresholds)
+		(*in).DeepCopyInto(*out)
+	}
 	if in.NodeAffinityType != nil {
 		in, out := &in.NodeAffinityType, &out.NodeAffinityType
 		*out = make([]string, len(*in))
 		copy(*out, *in)
 	}
+	if in.PodsHavingTooManyRestarts != nil {
+		in, out := &in.PodsHavingTooManyRestarts, &out.PodsHavingTooManyRestarts
+		*out = new(PodsHavingTooManyRestarts)
+		**out = **in
+	}
+	if in.PodLifeTime != nil {
+		in, out := &in.PodLifeTime, &out.PodLifeTime
+		*out = new(PodLifeTime)
+		(*in).DeepCopyInto(*out)
+	}
+	if in.RemoveDuplicates != nil {
+		in, out := &in.RemoveDuplicates, &out.RemoveDuplicates
+		*out = new(RemoveDuplicates)
+		(*in).DeepCopyInto(*out)
+	}
+	if in.Namespaces != nil {
+		in, out := &in.Namespaces, &out.Namespaces
+		*out = new(Namespaces)
+		(*in).DeepCopyInto(*out)
+	}
+	if in.ThresholdPriority != nil {
+		in, out := &in.ThresholdPriority, &out.ThresholdPriority
+		*out = new(int32)
+		**out = **in
+	}
 	return
 }
 

pkg/apis/componentconfig/doc.go

@@ -16,4 +16,4 @@ limitations under the License.
 
 // +k8s:deepcopy-gen=package,register
 
-package componentconfig // import "github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig"
+package componentconfig // import "sigs.k8s.io/descheduler/pkg/apis/componentconfig"

pkg/apis/componentconfig/install/install.go

@@ -1,48 +0,0 @@
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Package install installs the descheduler's componentconfig API group.
-package install
-
-import (
-	"k8s.io/apimachinery/pkg/apimachinery/announced"
-	"k8s.io/apimachinery/pkg/apimachinery/registered"
-	"k8s.io/apimachinery/pkg/runtime"
-
-	"github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig"
-	"github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig/v1alpha1"
-	deschedulerscheme "github.com/kubernetes-incubator/descheduler/pkg/descheduler/scheme"
-)
-
-func init() {
-	Install(deschedulerscheme.GroupFactoryRegistry, deschedulerscheme.Registry, deschedulerscheme.Scheme)
-}
-
-// Install registers the API group and adds types to a scheme
-func Install(groupFactoryRegistry announced.APIGroupFactoryRegistry, registry *registered.APIRegistrationManager, scheme *runtime.Scheme) {
-	if err := announced.NewGroupMetaFactory(
-		&announced.GroupMetaFactoryArgs{
-			GroupName:                  componentconfig.GroupName,
-			VersionPreferenceOrder:     []string{v1alpha1.SchemeGroupVersion.Version},
-			AddInternalObjectsToScheme: componentconfig.AddToScheme,
-		},
-		announced.VersionToSchemeFunc{
-			v1alpha1.SchemeGroupVersion.Version: v1alpha1.AddToScheme,
-		},
-	).Announce(groupFactoryRegistry).RegisterAndEnable(registry, scheme); err != nil {
-		panic(err)
-	}
-}

pkg/apis/componentconfig/types.generated.go

@@ -1,682 +0,0 @@
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Code generated by codecgen - DO NOT EDIT.
-
-package componentconfig
-
-import (
-	"errors"
-	"fmt"
-	codec1978 "github.com/ugorji/go/codec"
-	pkg1_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"reflect"
-	"runtime"
-	time "time"
-)
-
-const (
-	// ----- content types ----
-	codecSelferCcUTF81234 = 1
-	codecSelferCcRAW1234  = 0
-	// ----- value types used ----
-	codecSelferValueTypeArray1234  = 10
-	codecSelferValueTypeMap1234    = 9
-	codecSelferValueTypeString1234 = 6
-	codecSelferValueTypeInt1234    = 2
-	codecSelferValueTypeUint1234   = 3
-	codecSelferValueTypeFloat1234  = 4
-)
-
-var (
-	codecSelferBitsize1234                         = uint8(reflect.TypeOf(uint(0)).Bits())
-	errCodecSelferOnlyMapOrArrayEncodeToStruct1234 = errors.New(`only encoded map or array can be decoded into a struct`)
-)
-
-type codecSelfer1234 struct{}
-
-func init() {
-	if codec1978.GenVersion != 8 {
-		_, file, _, _ := runtime.Caller(0)
-		err := fmt.Errorf("codecgen version mismatch: current: %v, need %v. Re-generate file: %v",
-			8, codec1978.GenVersion, file)
-		panic(err)
-	}
-	if false { // reference the types, but skip this branch at build/run time
-		var v0 pkg1_v1.TypeMeta
-		var v1 time.Duration
-		_, _ = v0, v1
-	}
-}
-
-func (x *DeschedulerConfiguration) CodecEncodeSelf(e *codec1978.Encoder) {
-	var h codecSelfer1234
-	z, r := codec1978.GenHelperEncoder(e)
-	_, _, _ = h, z, r
-	if x == nil {
-		r.EncodeNil()
-	} else {
-		yym1 := z.EncBinary()
-		_ = yym1
-		if false {
-		} else if yyxt1 := z.Extension(z.I2Rtid(x)); yyxt1 != nil {
-			z.EncExtension(x, yyxt1)
-		} else {
-			yysep2 := !z.EncBinary()
-			yy2arr2 := z.EncBasicHandle().StructToArray
-			var yyq2 [9]bool
-			_ = yyq2
-			_, _ = yysep2, yy2arr2
-			const yyr2 bool = false
-			yyq2[0] = x.Kind != ""
-			yyq2[1] = x.APIVersion != ""
-			if yyr2 || yy2arr2 {
-				r.WriteArrayStart(9)
-			} else {
-				var yynn2 = 7
-				for _, b := range yyq2 {
-					if b {
-						yynn2++
-					}
-				}
-				r.WriteMapStart(yynn2)
-				yynn2 = 0
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[0] {
-					yym4 := z.EncBinary()
-					_ = yym4
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.Kind))
-					}
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, "")
-				}
-			} else {
-				if yyq2[0] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `kind`)
-					r.WriteMapElemValue()
-					yym5 := z.EncBinary()
-					_ = yym5
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.Kind))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[1] {
-					yym7 := z.EncBinary()
-					_ = yym7
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.APIVersion))
-					}
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, "")
-				}
-			} else {
-				if yyq2[1] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `apiVersion`)
-					r.WriteMapElemValue()
-					yym8 := z.EncBinary()
-					_ = yym8
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.APIVersion))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				yym10 := z.EncBinary()
-				_ = yym10
-				if false {
-				} else if yyxt10 := z.Extension(z.I2Rtid(x.DeschedulingInterval)); yyxt10 != nil {
-					z.EncExtension(x.DeschedulingInterval, yyxt10)
-				} else {
-					r.EncodeInt(int64(x.DeschedulingInterval))
-				}
-			} else {
-				r.WriteMapElemKey()
-				r.EncStructFieldKey(codecSelferValueTypeString1234, `DeschedulingInterval`)
-				r.WriteMapElemValue()
-				yym11 := z.EncBinary()
-				_ = yym11
-				if false {
-				} else if yyxt11 := z.Extension(z.I2Rtid(x.DeschedulingInterval)); yyxt11 != nil {
-					z.EncExtension(x.DeschedulingInterval, yyxt11)
-				} else {
-					r.EncodeInt(int64(x.DeschedulingInterval))
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				yym13 := z.EncBinary()
-				_ = yym13
-				if false {
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, string(x.KubeconfigFile))
-				}
-			} else {
-				r.WriteMapElemKey()
-				r.EncStructFieldKey(codecSelferValueTypeString1234, `KubeconfigFile`)
-				r.WriteMapElemValue()
-				yym14 := z.EncBinary()
-				_ = yym14
-				if false {
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, string(x.KubeconfigFile))
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				yym16 := z.EncBinary()
-				_ = yym16
-				if false {
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, string(x.PolicyConfigFile))
-				}
-			} else {
-				r.WriteMapElemKey()
-				r.EncStructFieldKey(codecSelferValueTypeString1234, `PolicyConfigFile`)
-				r.WriteMapElemValue()
-				yym17 := z.EncBinary()
-				_ = yym17
-				if false {
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, string(x.PolicyConfigFile))
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				yym19 := z.EncBinary()
-				_ = yym19
-				if false {
-				} else {
-					r.EncodeBool(bool(x.DryRun))
-				}
-			} else {
-				r.WriteMapElemKey()
-				r.EncStructFieldKey(codecSelferValueTypeString1234, `DryRun`)
-				r.WriteMapElemValue()
-				yym20 := z.EncBinary()
-				_ = yym20
-				if false {
-				} else {
-					r.EncodeBool(bool(x.DryRun))
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				yym22 := z.EncBinary()
-				_ = yym22
-				if false {
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, string(x.NodeSelector))
-				}
-			} else {
-				r.WriteMapElemKey()
-				r.EncStructFieldKey(codecSelferValueTypeString1234, `NodeSelector`)
-				r.WriteMapElemValue()
-				yym23 := z.EncBinary()
-				_ = yym23
-				if false {
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, string(x.NodeSelector))
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				yym25 := z.EncBinary()
-				_ = yym25
-				if false {
-				} else {
-					r.EncodeInt(int64(x.MaxNoOfPodsToEvictPerNode))
-				}
-			} else {
-				r.WriteMapElemKey()
-				r.EncStructFieldKey(codecSelferValueTypeString1234, `MaxNoOfPodsToEvictPerNode`)
-				r.WriteMapElemValue()
-				yym26 := z.EncBinary()
-				_ = yym26
-				if false {
-				} else {
-					r.EncodeInt(int64(x.MaxNoOfPodsToEvictPerNode))
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				yym28 := z.EncBinary()
-				_ = yym28
-				if false {
-				} else {
-					r.EncodeBool(bool(x.EvictLocalStoragePods))
-				}
-			} else {
-				r.WriteMapElemKey()
-				r.EncStructFieldKey(codecSelferValueTypeString1234, `EvictLocalStoragePods`)
-				r.WriteMapElemValue()
-				yym29 := z.EncBinary()
-				_ = yym29
-				if false {
-				} else {
-					r.EncodeBool(bool(x.EvictLocalStoragePods))
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayEnd()
-			} else {
-				r.WriteMapEnd()
-			}
-		}
-	}
-}
-
-func (x *DeschedulerConfiguration) CodecDecodeSelf(d *codec1978.Decoder) {
-	var h codecSelfer1234
-	z, r := codec1978.GenHelperDecoder(d)
-	_, _, _ = h, z, r
-	yym1 := z.DecBinary()
-	_ = yym1
-	if false {
-	} else if yyxt1 := z.Extension(z.I2Rtid(x)); yyxt1 != nil {
-		z.DecExtension(x, yyxt1)
-	} else {
-		yyct2 := r.ContainerType()
-		if yyct2 == codecSelferValueTypeMap1234 {
-			yyl2 := r.ReadMapStart()
-			if yyl2 == 0 {
-				r.ReadMapEnd()
-			} else {
-				x.codecDecodeSelfFromMap(yyl2, d)
-			}
-		} else if yyct2 == codecSelferValueTypeArray1234 {
-			yyl2 := r.ReadArrayStart()
-			if yyl2 == 0 {
-				r.ReadArrayEnd()
-			} else {
-				x.codecDecodeSelfFromArray(yyl2, d)
-			}
-		} else {
-			panic(errCodecSelferOnlyMapOrArrayEncodeToStruct1234)
-		}
-	}
-}
-
-func (x *DeschedulerConfiguration) codecDecodeSelfFromMap(l int, d *codec1978.Decoder) {
-	var h codecSelfer1234
-	z, r := codec1978.GenHelperDecoder(d)
-	_, _, _ = h, z, r
-	var yyhl3 bool = l >= 0
-	for yyj3 := 0; ; yyj3++ {
-		if yyhl3 {
-			if yyj3 >= l {
-				break
-			}
-		} else {
-			if r.CheckBreak() {
-				break
-			}
-		}
-		r.ReadMapElemKey()
-		yys3 := z.StringView(r.DecStructFieldKey(codecSelferValueTypeString1234, z.DecScratchArrayBuffer()))
-		r.ReadMapElemValue()
-		switch yys3 {
-		case "kind":
-			if r.TryDecodeAsNil() {
-				x.Kind = ""
-			} else {
-				yyv4 := &x.Kind
-				yym5 := z.DecBinary()
-				_ = yym5
-				if false {
-				} else {
-					*((*string)(yyv4)) = r.DecodeString()
-				}
-			}
-		case "apiVersion":
-			if r.TryDecodeAsNil() {
-				x.APIVersion = ""
-			} else {
-				yyv6 := &x.APIVersion
-				yym7 := z.DecBinary()
-				_ = yym7
-				if false {
-				} else {
-					*((*string)(yyv6)) = r.DecodeString()
-				}
-			}
-		case "DeschedulingInterval":
-			if r.TryDecodeAsNil() {
-				x.DeschedulingInterval = 0
-			} else {
-				yyv8 := &x.DeschedulingInterval
-				yym9 := z.DecBinary()
-				_ = yym9
-				if false {
-				} else if yyxt9 := z.Extension(z.I2Rtid(yyv8)); yyxt9 != nil {
-					z.DecExtension(yyv8, yyxt9)
-				} else {
-					*((*int64)(yyv8)) = int64(r.DecodeInt(64))
-				}
-			}
-		case "KubeconfigFile":
-			if r.TryDecodeAsNil() {
-				x.KubeconfigFile = ""
-			} else {
-				yyv10 := &x.KubeconfigFile
-				yym11 := z.DecBinary()
-				_ = yym11
-				if false {
-				} else {
-					*((*string)(yyv10)) = r.DecodeString()
-				}
-			}
-		case "PolicyConfigFile":
-			if r.TryDecodeAsNil() {
-				x.PolicyConfigFile = ""
-			} else {
-				yyv12 := &x.PolicyConfigFile
-				yym13 := z.DecBinary()
-				_ = yym13
-				if false {
-				} else {
-					*((*string)(yyv12)) = r.DecodeString()
-				}
-			}
-		case "DryRun":
-			if r.TryDecodeAsNil() {
-				x.DryRun = false
-			} else {
-				yyv14 := &x.DryRun
-				yym15 := z.DecBinary()
-				_ = yym15
-				if false {
-				} else {
-					*((*bool)(yyv14)) = r.DecodeBool()
-				}
-			}
-		case "NodeSelector":
-			if r.TryDecodeAsNil() {
-				x.NodeSelector = ""
-			} else {
-				yyv16 := &x.NodeSelector
-				yym17 := z.DecBinary()
-				_ = yym17
-				if false {
-				} else {
-					*((*string)(yyv16)) = r.DecodeString()
-				}
-			}
-		case "MaxNoOfPodsToEvictPerNode":
-			if r.TryDecodeAsNil() {
-				x.MaxNoOfPodsToEvictPerNode = 0
-			} else {
-				yyv18 := &x.MaxNoOfPodsToEvictPerNode
-				yym19 := z.DecBinary()
-				_ = yym19
-				if false {
-				} else {
-					*((*int)(yyv18)) = int(r.DecodeInt(codecSelferBitsize1234))
-				}
-			}
-		case "EvictLocalStoragePods":
-			if r.TryDecodeAsNil() {
-				x.EvictLocalStoragePods = false
-			} else {
-				yyv20 := &x.EvictLocalStoragePods
-				yym21 := z.DecBinary()
-				_ = yym21
-				if false {
-				} else {
-					*((*bool)(yyv20)) = r.DecodeBool()
-				}
-			}
-		default:
-			z.DecStructFieldNotFound(-1, yys3)
-		} // end switch yys3
-	} // end for yyj3
-	r.ReadMapEnd()
-}
-
-func (x *DeschedulerConfiguration) codecDecodeSelfFromArray(l int, d *codec1978.Decoder) {
-	var h codecSelfer1234
-	z, r := codec1978.GenHelperDecoder(d)
-	_, _, _ = h, z, r
-	var yyj22 int
-	var yyb22 bool
-	var yyhl22 bool = l >= 0
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.Kind = ""
-	} else {
-		yyv23 := &x.Kind
-		yym24 := z.DecBinary()
-		_ = yym24
-		if false {
-		} else {
-			*((*string)(yyv23)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.APIVersion = ""
-	} else {
-		yyv25 := &x.APIVersion
-		yym26 := z.DecBinary()
-		_ = yym26
-		if false {
-		} else {
-			*((*string)(yyv25)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.DeschedulingInterval = 0
-	} else {
-		yyv27 := &x.DeschedulingInterval
-		yym28 := z.DecBinary()
-		_ = yym28
-		if false {
-		} else if yyxt28 := z.Extension(z.I2Rtid(yyv27)); yyxt28 != nil {
-			z.DecExtension(yyv27, yyxt28)
-		} else {
-			*((*int64)(yyv27)) = int64(r.DecodeInt(64))
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.KubeconfigFile = ""
-	} else {
-		yyv29 := &x.KubeconfigFile
-		yym30 := z.DecBinary()
-		_ = yym30
-		if false {
-		} else {
-			*((*string)(yyv29)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.PolicyConfigFile = ""
-	} else {
-		yyv31 := &x.PolicyConfigFile
-		yym32 := z.DecBinary()
-		_ = yym32
-		if false {
-		} else {
-			*((*string)(yyv31)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.DryRun = false
-	} else {
-		yyv33 := &x.DryRun
-		yym34 := z.DecBinary()
-		_ = yym34
-		if false {
-		} else {
-			*((*bool)(yyv33)) = r.DecodeBool()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.NodeSelector = ""
-	} else {
-		yyv35 := &x.NodeSelector
-		yym36 := z.DecBinary()
-		_ = yym36
-		if false {
-		} else {
-			*((*string)(yyv35)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.MaxNoOfPodsToEvictPerNode = 0
-	} else {
-		yyv37 := &x.MaxNoOfPodsToEvictPerNode
-		yym38 := z.DecBinary()
-		_ = yym38
-		if false {
-		} else {
-			*((*int)(yyv37)) = int(r.DecodeInt(codecSelferBitsize1234))
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.EvictLocalStoragePods = false
-	} else {
-		yyv39 := &x.EvictLocalStoragePods
-		yym40 := z.DecBinary()
-		_ = yym40
-		if false {
-		} else {
-			*((*bool)(yyv39)) = r.DecodeBool()
-		}
-	}
-	for {
-		yyj22++
-		if yyhl22 {
-			yyb22 = yyj22 > l
-		} else {
-			yyb22 = r.CheckBreak()
-		}
-		if yyb22 {
-			break
-		}
-		r.ReadArrayElem()
-		z.DecStructFieldNotFound(yyj22-1, "")
-	}
-	r.ReadArrayEnd()
-}

pkg/apis/componentconfig/types.go

@@ -20,6 +20,7 @@ import (
 	"time"
 
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	componentbaseconfig "k8s.io/component-base/config"
 )
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
@@ -48,4 +49,8 @@ type DeschedulerConfiguration struct {
 
 	// EvictLocalStoragePods allows pods using local storage to be evicted.
 	EvictLocalStoragePods bool
+
+	// Logging specifies the options of logging.
+	// Refer [Logs Options](https://github.com/kubernetes/component-base/blob/master/logs/options.go) for more information.
+	Logging componentbaseconfig.LoggingConfiguration
 }

pkg/apis/componentconfig/v1alpha1/doc.go

@@ -15,10 +15,10 @@ limitations under the License.
 */
 
 // +k8s:deepcopy-gen=package,register
-// +k8s:conversion-gen=github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig
+// +k8s:conversion-gen=sigs.k8s.io/descheduler/pkg/apis/componentconfig
 // +k8s:defaulter-gen=TypeMeta
 
 // Package v1alpha1 is the v1alpha1 version of the descheduler's componentconfig API
 // +groupName=deschedulercomponentconfig
 
-package v1alpha1 // import "github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig/v1alpha1"
+package v1alpha1 // import "sigs.k8s.io/descheduler/pkg/apis/componentconfig/v1alpha1"

pkg/apis/componentconfig/v1alpha1/types.generated.go

@@ -1,724 +0,0 @@
-/*
-Copyright 2017 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Code generated by codecgen - DO NOT EDIT.
-
-package v1alpha1
-
-import (
-	"errors"
-	"fmt"
-	codec1978 "github.com/ugorji/go/codec"
-	pkg1_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"reflect"
-	"runtime"
-	time "time"
-)
-
-const (
-	// ----- content types ----
-	codecSelferCcUTF81234 = 1
-	codecSelferCcRAW1234  = 0
-	// ----- value types used ----
-	codecSelferValueTypeArray1234  = 10
-	codecSelferValueTypeMap1234    = 9
-	codecSelferValueTypeString1234 = 6
-	codecSelferValueTypeInt1234    = 2
-	codecSelferValueTypeUint1234   = 3
-	codecSelferValueTypeFloat1234  = 4
-)
-
-var (
-	codecSelferBitsize1234                         = uint8(reflect.TypeOf(uint(0)).Bits())
-	errCodecSelferOnlyMapOrArrayEncodeToStruct1234 = errors.New(`only encoded map or array can be decoded into a struct`)
-)
-
-type codecSelfer1234 struct{}
-
-func init() {
-	if codec1978.GenVersion != 8 {
-		_, file, _, _ := runtime.Caller(0)
-		err := fmt.Errorf("codecgen version mismatch: current: %v, need %v. Re-generate file: %v",
-			8, codec1978.GenVersion, file)
-		panic(err)
-	}
-	if false { // reference the types, but skip this branch at build/run time
-		var v0 pkg1_v1.TypeMeta
-		var v1 time.Duration
-		_, _ = v0, v1
-	}
-}
-
-func (x *DeschedulerConfiguration) CodecEncodeSelf(e *codec1978.Encoder) {
-	var h codecSelfer1234
-	z, r := codec1978.GenHelperEncoder(e)
-	_, _, _ = h, z, r
-	if x == nil {
-		r.EncodeNil()
-	} else {
-		yym1 := z.EncBinary()
-		_ = yym1
-		if false {
-		} else if yyxt1 := z.Extension(z.I2Rtid(x)); yyxt1 != nil {
-			z.EncExtension(x, yyxt1)
-		} else {
-			yysep2 := !z.EncBinary()
-			yy2arr2 := z.EncBasicHandle().StructToArray
-			var yyq2 [9]bool
-			_ = yyq2
-			_, _ = yysep2, yy2arr2
-			const yyr2 bool = false
-			yyq2[0] = x.Kind != ""
-			yyq2[1] = x.APIVersion != ""
-			yyq2[2] = x.DeschedulingInterval != 0
-			yyq2[4] = x.PolicyConfigFile != ""
-			yyq2[5] = x.DryRun != false
-			yyq2[6] = x.NodeSelector != ""
-			yyq2[7] = x.MaxNoOfPodsToEvictPerNode != 0
-			yyq2[8] = x.EvictLocalStoragePods != false
-			if yyr2 || yy2arr2 {
-				r.WriteArrayStart(9)
-			} else {
-				var yynn2 = 1
-				for _, b := range yyq2 {
-					if b {
-						yynn2++
-					}
-				}
-				r.WriteMapStart(yynn2)
-				yynn2 = 0
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[0] {
-					yym4 := z.EncBinary()
-					_ = yym4
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.Kind))
-					}
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, "")
-				}
-			} else {
-				if yyq2[0] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `kind`)
-					r.WriteMapElemValue()
-					yym5 := z.EncBinary()
-					_ = yym5
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.Kind))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[1] {
-					yym7 := z.EncBinary()
-					_ = yym7
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.APIVersion))
-					}
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, "")
-				}
-			} else {
-				if yyq2[1] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `apiVersion`)
-					r.WriteMapElemValue()
-					yym8 := z.EncBinary()
-					_ = yym8
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.APIVersion))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[2] {
-					yym10 := z.EncBinary()
-					_ = yym10
-					if false {
-					} else if yyxt10 := z.Extension(z.I2Rtid(x.DeschedulingInterval)); yyxt10 != nil {
-						z.EncExtension(x.DeschedulingInterval, yyxt10)
-					} else {
-						r.EncodeInt(int64(x.DeschedulingInterval))
-					}
-				} else {
-					r.EncodeInt(0)
-				}
-			} else {
-				if yyq2[2] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `deschedulingInterval`)
-					r.WriteMapElemValue()
-					yym11 := z.EncBinary()
-					_ = yym11
-					if false {
-					} else if yyxt11 := z.Extension(z.I2Rtid(x.DeschedulingInterval)); yyxt11 != nil {
-						z.EncExtension(x.DeschedulingInterval, yyxt11)
-					} else {
-						r.EncodeInt(int64(x.DeschedulingInterval))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				yym13 := z.EncBinary()
-				_ = yym13
-				if false {
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, string(x.KubeconfigFile))
-				}
-			} else {
-				r.WriteMapElemKey()
-				r.EncStructFieldKey(codecSelferValueTypeString1234, `kubeconfigFile`)
-				r.WriteMapElemValue()
-				yym14 := z.EncBinary()
-				_ = yym14
-				if false {
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, string(x.KubeconfigFile))
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[4] {
-					yym16 := z.EncBinary()
-					_ = yym16
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.PolicyConfigFile))
-					}
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, "")
-				}
-			} else {
-				if yyq2[4] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `policyConfigFile`)
-					r.WriteMapElemValue()
-					yym17 := z.EncBinary()
-					_ = yym17
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.PolicyConfigFile))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[5] {
-					yym19 := z.EncBinary()
-					_ = yym19
-					if false {
-					} else {
-						r.EncodeBool(bool(x.DryRun))
-					}
-				} else {
-					r.EncodeBool(false)
-				}
-			} else {
-				if yyq2[5] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `dryRun`)
-					r.WriteMapElemValue()
-					yym20 := z.EncBinary()
-					_ = yym20
-					if false {
-					} else {
-						r.EncodeBool(bool(x.DryRun))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[6] {
-					yym22 := z.EncBinary()
-					_ = yym22
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.NodeSelector))
-					}
-				} else {
-					r.EncodeString(codecSelferCcUTF81234, "")
-				}
-			} else {
-				if yyq2[6] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `nodeSelector`)
-					r.WriteMapElemValue()
-					yym23 := z.EncBinary()
-					_ = yym23
-					if false {
-					} else {
-						r.EncodeString(codecSelferCcUTF81234, string(x.NodeSelector))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[7] {
-					yym25 := z.EncBinary()
-					_ = yym25
-					if false {
-					} else {
-						r.EncodeInt(int64(x.MaxNoOfPodsToEvictPerNode))
-					}
-				} else {
-					r.EncodeInt(0)
-				}
-			} else {
-				if yyq2[7] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `maxNoOfPodsToEvictPerNode`)
-					r.WriteMapElemValue()
-					yym26 := z.EncBinary()
-					_ = yym26
-					if false {
-					} else {
-						r.EncodeInt(int64(x.MaxNoOfPodsToEvictPerNode))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayElem()
-				if yyq2[8] {
-					yym28 := z.EncBinary()
-					_ = yym28
-					if false {
-					} else {
-						r.EncodeBool(bool(x.EvictLocalStoragePods))
-					}
-				} else {
-					r.EncodeBool(false)
-				}
-			} else {
-				if yyq2[8] {
-					r.WriteMapElemKey()
-					r.EncStructFieldKey(codecSelferValueTypeString1234, `evictLocalStoragePods`)
-					r.WriteMapElemValue()
-					yym29 := z.EncBinary()
-					_ = yym29
-					if false {
-					} else {
-						r.EncodeBool(bool(x.EvictLocalStoragePods))
-					}
-				}
-			}
-			if yyr2 || yy2arr2 {
-				r.WriteArrayEnd()
-			} else {
-				r.WriteMapEnd()
-			}
-		}
-	}
-}
-
-func (x *DeschedulerConfiguration) CodecDecodeSelf(d *codec1978.Decoder) {
-	var h codecSelfer1234
-	z, r := codec1978.GenHelperDecoder(d)
-	_, _, _ = h, z, r
-	yym1 := z.DecBinary()
-	_ = yym1
-	if false {
-	} else if yyxt1 := z.Extension(z.I2Rtid(x)); yyxt1 != nil {
-		z.DecExtension(x, yyxt1)
-	} else {
-		yyct2 := r.ContainerType()
-		if yyct2 == codecSelferValueTypeMap1234 {
-			yyl2 := r.ReadMapStart()
-			if yyl2 == 0 {
-				r.ReadMapEnd()
-			} else {
-				x.codecDecodeSelfFromMap(yyl2, d)
-			}
-		} else if yyct2 == codecSelferValueTypeArray1234 {
-			yyl2 := r.ReadArrayStart()
-			if yyl2 == 0 {
-				r.ReadArrayEnd()
-			} else {
-				x.codecDecodeSelfFromArray(yyl2, d)
-			}
-		} else {
-			panic(errCodecSelferOnlyMapOrArrayEncodeToStruct1234)
-		}
-	}
-}
-
-func (x *DeschedulerConfiguration) codecDecodeSelfFromMap(l int, d *codec1978.Decoder) {
-	var h codecSelfer1234
-	z, r := codec1978.GenHelperDecoder(d)
-	_, _, _ = h, z, r
-	var yyhl3 bool = l >= 0
-	for yyj3 := 0; ; yyj3++ {
-		if yyhl3 {
-			if yyj3 >= l {
-				break
-			}
-		} else {
-			if r.CheckBreak() {
-				break
-			}
-		}
-		r.ReadMapElemKey()
-		yys3 := z.StringView(r.DecStructFieldKey(codecSelferValueTypeString1234, z.DecScratchArrayBuffer()))
-		r.ReadMapElemValue()
-		switch yys3 {
-		case "kind":
-			if r.TryDecodeAsNil() {
-				x.Kind = ""
-			} else {
-				yyv4 := &x.Kind
-				yym5 := z.DecBinary()
-				_ = yym5
-				if false {
-				} else {
-					*((*string)(yyv4)) = r.DecodeString()
-				}
-			}
-		case "apiVersion":
-			if r.TryDecodeAsNil() {
-				x.APIVersion = ""
-			} else {
-				yyv6 := &x.APIVersion
-				yym7 := z.DecBinary()
-				_ = yym7
-				if false {
-				} else {
-					*((*string)(yyv6)) = r.DecodeString()
-				}
-			}
-		case "deschedulingInterval":
-			if r.TryDecodeAsNil() {
-				x.DeschedulingInterval = 0
-			} else {
-				yyv8 := &x.DeschedulingInterval
-				yym9 := z.DecBinary()
-				_ = yym9
-				if false {
-				} else if yyxt9 := z.Extension(z.I2Rtid(yyv8)); yyxt9 != nil {
-					z.DecExtension(yyv8, yyxt9)
-				} else {
-					*((*int64)(yyv8)) = int64(r.DecodeInt(64))
-				}
-			}
-		case "kubeconfigFile":
-			if r.TryDecodeAsNil() {
-				x.KubeconfigFile = ""
-			} else {
-				yyv10 := &x.KubeconfigFile
-				yym11 := z.DecBinary()
-				_ = yym11
-				if false {
-				} else {
-					*((*string)(yyv10)) = r.DecodeString()
-				}
-			}
-		case "policyConfigFile":
-			if r.TryDecodeAsNil() {
-				x.PolicyConfigFile = ""
-			} else {
-				yyv12 := &x.PolicyConfigFile
-				yym13 := z.DecBinary()
-				_ = yym13
-				if false {
-				} else {
-					*((*string)(yyv12)) = r.DecodeString()
-				}
-			}
-		case "dryRun":
-			if r.TryDecodeAsNil() {
-				x.DryRun = false
-			} else {
-				yyv14 := &x.DryRun
-				yym15 := z.DecBinary()
-				_ = yym15
-				if false {
-				} else {
-					*((*bool)(yyv14)) = r.DecodeBool()
-				}
-			}
-		case "nodeSelector":
-			if r.TryDecodeAsNil() {
-				x.NodeSelector = ""
-			} else {
-				yyv16 := &x.NodeSelector
-				yym17 := z.DecBinary()
-				_ = yym17
-				if false {
-				} else {
-					*((*string)(yyv16)) = r.DecodeString()
-				}
-			}
-		case "maxNoOfPodsToEvictPerNode":
-			if r.TryDecodeAsNil() {
-				x.MaxNoOfPodsToEvictPerNode = 0
-			} else {
-				yyv18 := &x.MaxNoOfPodsToEvictPerNode
-				yym19 := z.DecBinary()
-				_ = yym19
-				if false {
-				} else {
-					*((*int)(yyv18)) = int(r.DecodeInt(codecSelferBitsize1234))
-				}
-			}
-		case "evictLocalStoragePods":
-			if r.TryDecodeAsNil() {
-				x.EvictLocalStoragePods = false
-			} else {
-				yyv20 := &x.EvictLocalStoragePods
-				yym21 := z.DecBinary()
-				_ = yym21
-				if false {
-				} else {
-					*((*bool)(yyv20)) = r.DecodeBool()
-				}
-			}
-		default:
-			z.DecStructFieldNotFound(-1, yys3)
-		} // end switch yys3
-	} // end for yyj3
-	r.ReadMapEnd()
-}
-
-func (x *DeschedulerConfiguration) codecDecodeSelfFromArray(l int, d *codec1978.Decoder) {
-	var h codecSelfer1234
-	z, r := codec1978.GenHelperDecoder(d)
-	_, _, _ = h, z, r
-	var yyj22 int
-	var yyb22 bool
-	var yyhl22 bool = l >= 0
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.Kind = ""
-	} else {
-		yyv23 := &x.Kind
-		yym24 := z.DecBinary()
-		_ = yym24
-		if false {
-		} else {
-			*((*string)(yyv23)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.APIVersion = ""
-	} else {
-		yyv25 := &x.APIVersion
-		yym26 := z.DecBinary()
-		_ = yym26
-		if false {
-		} else {
-			*((*string)(yyv25)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.DeschedulingInterval = 0
-	} else {
-		yyv27 := &x.DeschedulingInterval
-		yym28 := z.DecBinary()
-		_ = yym28
-		if false {
-		} else if yyxt28 := z.Extension(z.I2Rtid(yyv27)); yyxt28 != nil {
-			z.DecExtension(yyv27, yyxt28)
-		} else {
-			*((*int64)(yyv27)) = int64(r.DecodeInt(64))
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.KubeconfigFile = ""
-	} else {
-		yyv29 := &x.KubeconfigFile
-		yym30 := z.DecBinary()
-		_ = yym30
-		if false {
-		} else {
-			*((*string)(yyv29)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.PolicyConfigFile = ""
-	} else {
-		yyv31 := &x.PolicyConfigFile
-		yym32 := z.DecBinary()
-		_ = yym32
-		if false {
-		} else {
-			*((*string)(yyv31)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.DryRun = false
-	} else {
-		yyv33 := &x.DryRun
-		yym34 := z.DecBinary()
-		_ = yym34
-		if false {
-		} else {
-			*((*bool)(yyv33)) = r.DecodeBool()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.NodeSelector = ""
-	} else {
-		yyv35 := &x.NodeSelector
-		yym36 := z.DecBinary()
-		_ = yym36
-		if false {
-		} else {
-			*((*string)(yyv35)) = r.DecodeString()
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.MaxNoOfPodsToEvictPerNode = 0
-	} else {
-		yyv37 := &x.MaxNoOfPodsToEvictPerNode
-		yym38 := z.DecBinary()
-		_ = yym38
-		if false {
-		} else {
-			*((*int)(yyv37)) = int(r.DecodeInt(codecSelferBitsize1234))
-		}
-	}
-	yyj22++
-	if yyhl22 {
-		yyb22 = yyj22 > l
-	} else {
-		yyb22 = r.CheckBreak()
-	}
-	if yyb22 {
-		r.ReadArrayEnd()
-		return
-	}
-	r.ReadArrayElem()
-	if r.TryDecodeAsNil() {
-		x.EvictLocalStoragePods = false
-	} else {
-		yyv39 := &x.EvictLocalStoragePods
-		yym40 := z.DecBinary()
-		_ = yym40
-		if false {
-		} else {
-			*((*bool)(yyv39)) = r.DecodeBool()
-		}
-	}
-	for {
-		yyj22++
-		if yyhl22 {
-			yyb22 = yyj22 > l
-		} else {
-			yyb22 = r.CheckBreak()
-		}
-		if yyb22 {
-			break
-		}
-		r.ReadArrayElem()
-		z.DecStructFieldNotFound(yyj22-1, "")
-	}
-	r.ReadArrayEnd()
-}

pkg/apis/componentconfig/v1alpha1/zz_generated.conversion.go

@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2018 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,16 +16,16 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// This file was autogenerated by conversion-gen. Do not edit it manually!
+// Code generated by conversion-gen. DO NOT EDIT.
 
 package v1alpha1
 
 import (
 	time "time"
 
-	componentconfig "github.com/kubernetes-incubator/descheduler/pkg/apis/componentconfig"
 	conversion "k8s.io/apimachinery/pkg/conversion"
 	runtime "k8s.io/apimachinery/pkg/runtime"
+	componentconfig "sigs.k8s.io/descheduler/pkg/apis/componentconfig"
 )
 
 func init() {
@@ -34,11 +34,18 @@ func init() {
 
 // RegisterConversions adds conversion functions to the given scheme.
 // Public to allow building arbitrary schemes.
-func RegisterConversions(scheme *runtime.Scheme) error {
-	return scheme.AddGeneratedConversionFuncs(
-		Convert_v1alpha1_DeschedulerConfiguration_To_componentconfig_DeschedulerConfiguration,
-		Convert_componentconfig_DeschedulerConfiguration_To_v1alpha1_DeschedulerConfiguration,
-	)
+func RegisterConversions(s *runtime.Scheme) error {
+	if err := s.AddGeneratedConversionFunc((*DeschedulerConfiguration)(nil), (*componentconfig.DeschedulerConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_v1alpha1_DeschedulerConfiguration_To_componentconfig_DeschedulerConfiguration(a.(*DeschedulerConfiguration), b.(*componentconfig.DeschedulerConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	if err := s.AddGeneratedConversionFunc((*componentconfig.DeschedulerConfiguration)(nil), (*DeschedulerConfiguration)(nil), func(a, b interface{}, scope conversion.Scope) error {
+		return Convert_componentconfig_DeschedulerConfiguration_To_v1alpha1_DeschedulerConfiguration(a.(*componentconfig.DeschedulerConfiguration), b.(*DeschedulerConfiguration), scope)
+	}); err != nil {
+		return err
+	}
+	return nil
 }
 
 func autoConvert_v1alpha1_DeschedulerConfiguration_To_componentconfig_DeschedulerConfiguration(in *DeschedulerConfiguration, out *componentconfig.DeschedulerConfiguration, s conversion.Scope) error {

pkg/apis/componentconfig/v1alpha1/zz_generated.deepcopy.go

@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2018 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// This file was autogenerated by deepcopy-gen. Do not edit it manually!
+// Code generated by deepcopy-gen. DO NOT EDIT.
 
 package v1alpha1
 
@@ -45,7 +45,6 @@ func (in *DeschedulerConfiguration) DeepCopy() *DeschedulerConfiguration {
 func (in *DeschedulerConfiguration) DeepCopyObject() runtime.Object {
 	if c := in.DeepCopy(); c != nil {
 		return c
-	} else {
-		return nil
 	}
+	return nil
 }

pkg/apis/componentconfig/v1alpha1/zz_generated.defaults.go

@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2018 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// This file was autogenerated by defaulter-gen. Do not edit it manually!
+// Code generated by defaulter-gen. DO NOT EDIT.
 
 package v1alpha1
 

pkg/apis/componentconfig/zz_generated.deepcopy.go

@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2018 The Kubernetes Authors.
+Copyright 2020 The Kubernetes Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -16,7 +16,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// This file was autogenerated by deepcopy-gen. Do not edit it manually!
+// Code generated by deepcopy-gen. DO NOT EDIT.
 
 package componentconfig
 
@@ -45,7 +45,6 @@ func (in *DeschedulerConfiguration) DeepCopy() *DeschedulerConfiguration {
 func (in *DeschedulerConfiguration) DeepCopyObject() runtime.Object {
 	if c := in.DeepCopy(); c != nil {
 		return c
-	} else {
-		return nil
 	}
+	return nil
 }

pkg/descheduler/client/client.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 
 	clientset "k8s.io/client-go/kubernetes"
+	// Ensure to load all auth plugins.
 	_ "k8s.io/client-go/plugin/pkg/client/auth"
 	"k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"

pkg/descheduler/descheduler.go

@@ -17,19 +17,26 @@ limitations under the License.
 package descheduler
 
 import (
+	"context"
 	"fmt"
 
-	"github.com/golang/glog"
+	v1 "k8s.io/api/core/v1"
+	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/klog/v2"
 
-	"github.com/kubernetes-incubator/descheduler/cmd/descheduler/app/options"
-	"github.com/kubernetes-incubator/descheduler/pkg/descheduler/client"
-	eutils "github.com/kubernetes-incubator/descheduler/pkg/descheduler/evictions/utils"
-	nodeutil "github.com/kubernetes-incubator/descheduler/pkg/descheduler/node"
-	"github.com/kubernetes-incubator/descheduler/pkg/descheduler/strategies"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/client-go/informers"
+	"sigs.k8s.io/descheduler/cmd/descheduler/app/options"
+	"sigs.k8s.io/descheduler/pkg/api"
+	"sigs.k8s.io/descheduler/pkg/descheduler/client"
+	"sigs.k8s.io/descheduler/pkg/descheduler/evictions"
+	eutils "sigs.k8s.io/descheduler/pkg/descheduler/evictions/utils"
+	nodeutil "sigs.k8s.io/descheduler/pkg/descheduler/node"
+	"sigs.k8s.io/descheduler/pkg/descheduler/strategies"
 )
 
 func Run(rs *options.DeschedulerServer) error {
-
+	ctx := context.Background()
 	rsclient, err := client.CreateClient(rs.KubeconfigFile)
 	if err != nil {
 		return err
@@ -50,21 +57,78 @@ func Run(rs *options.DeschedulerServer) error {
 	}
 
 	stopChannel := make(chan struct{})
-	nodes, err := nodeutil.ReadyNodes(rs.Client, rs.NodeSelector, stopChannel)
-	if err != nil {
-		return err
+	return RunDeschedulerStrategies(ctx, rs, deschedulerPolicy, evictionPolicyGroupVersion, stopChannel)
+}
+
+type strategyFunction func(ctx context.Context, client clientset.Interface, strategy api.DeschedulerStrategy, nodes []*v1.Node, podEvictor *evictions.PodEvictor)
+
+func RunDeschedulerStrategies(ctx context.Context, rs *options.DeschedulerServer, deschedulerPolicy *api.DeschedulerPolicy, evictionPolicyGroupVersion string, stopChannel chan struct{}) error {
+	sharedInformerFactory := informers.NewSharedInformerFactory(rs.Client, 0)
+	nodeInformer := sharedInformerFactory.Core().V1().Nodes()
+
+	sharedInformerFactory.Start(stopChannel)
+	sharedInformerFactory.WaitForCacheSync(stopChannel)
+
+	strategyFuncs := map[string]strategyFunction{
+		"RemoveDuplicates":                            strategies.RemoveDuplicatePods,
+		"LowNodeUtilization":                          strategies.LowNodeUtilization,
+		"RemovePodsViolatingInterPodAntiAffinity":     strategies.RemovePodsViolatingInterPodAntiAffinity,
+		"RemovePodsViolatingNodeAffinity":             strategies.RemovePodsViolatingNodeAffinity,
+		"RemovePodsViolatingNodeTaints":               strategies.RemovePodsViolatingNodeTaints,
+		"RemovePodsHavingTooManyRestarts":             strategies.RemovePodsHavingTooManyRestarts,
+		"PodLifeTime":                                 strategies.PodLifeTime,
+		"RemovePodsViolatingTopologySpreadConstraint": strategies.RemovePodsViolatingTopologySpreadConstraint,
 	}
 
-	if len(nodes) <= 1 {
-		glog.V(1).Infof("The cluster size is 0 or 1 meaning eviction causes service disruption or degradation. So aborting..")
-		return nil
+	nodeSelector := rs.NodeSelector
+	if deschedulerPolicy.NodeSelector != nil {
+		nodeSelector = *deschedulerPolicy.NodeSelector
 	}
 
-	nodePodCount := strategies.InitializeNodePodCount(nodes)
-	strategies.RemoveDuplicatePods(rs, deschedulerPolicy.Strategies["RemoveDuplicates"], evictionPolicyGroupVersion, nodes, nodePodCount)
-	strategies.LowNodeUtilization(rs, deschedulerPolicy.Strategies["LowNodeUtilization"], evictionPolicyGroupVersion, nodes, nodePodCount)
-	strategies.RemovePodsViolatingInterPodAntiAffinity(rs, deschedulerPolicy.Strategies["RemovePodsViolatingInterPodAntiAffinity"], evictionPolicyGroupVersion, nodes, nodePodCount)
-	strategies.RemovePodsViolatingNodeAffinity(rs, deschedulerPolicy.Strategies["RemovePodsViolatingNodeAffinity"], evictionPolicyGroupVersion, nodes, nodePodCount)
+	evictLocalStoragePods := rs.EvictLocalStoragePods
+	if deschedulerPolicy.EvictLocalStoragePods != nil {
+		evictLocalStoragePods = *deschedulerPolicy.EvictLocalStoragePods
+	}
+
+	maxNoOfPodsToEvictPerNode := rs.MaxNoOfPodsToEvictPerNode
+	if deschedulerPolicy.MaxNoOfPodsToEvictPerNode != nil {
+		maxNoOfPodsToEvictPerNode = *deschedulerPolicy.MaxNoOfPodsToEvictPerNode
+	}
+
+	wait.Until(func() {
+		nodes, err := nodeutil.ReadyNodes(ctx, rs.Client, nodeInformer, nodeSelector, stopChannel)
+		if err != nil {
+			klog.V(1).InfoS("Unable to get ready nodes", "err", err)
+			close(stopChannel)
+			return
+		}
+
+		if len(nodes) <= 1 {
+			klog.V(1).InfoS("The cluster size is 0 or 1 meaning eviction causes service disruption or degradation. So aborting..")
+			close(stopChannel)
+			return
+		}
+
+		podEvictor := evictions.NewPodEvictor(
+			rs.Client,
+			evictionPolicyGroupVersion,
+			rs.DryRun,
+			maxNoOfPodsToEvictPerNode,
+			nodes,
+			evictLocalStoragePods,
+		)
+
+		for name, f := range strategyFuncs {
+			if strategy := deschedulerPolicy.Strategies[api.StrategyName(name)]; strategy.Enabled {
+				f(ctx, rs.Client, strategy, nodes, podEvictor)
+			}
+		}
+
+		// If there was no interval specified, send a signal to the stopChannel to end the wait.Until loop after 1 iteration
+		if rs.DeschedulingInterval.Seconds() == 0 {
+			close(stopChannel)
+		}
+	}, rs.DeschedulingInterval, stopChannel)
 
 	return nil
 }

pkg/descheduler/descheduler_test.go

@@ -0,0 +1,97 @@
+package descheduler
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"testing"
+	"time"
+
+	"k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/wait"
+	fakeclientset "k8s.io/client-go/kubernetes/fake"
+	"sigs.k8s.io/descheduler/cmd/descheduler/app/options"
+	"sigs.k8s.io/descheduler/pkg/api"
+	"sigs.k8s.io/descheduler/test"
+)
+
+func TestTaintsUpdated(t *testing.T) {
+	ctx := context.Background()
+	n1 := test.BuildTestNode("n1", 2000, 3000, 10, nil)
+	n2 := test.BuildTestNode("n2", 2000, 3000, 10, nil)
+
+	p1 := test.BuildTestPod(fmt.Sprintf("pod_1_%s", n1.Name), 200, 0, n1.Name, nil)
+	p1.ObjectMeta.OwnerReferences = []metav1.OwnerReference{
+		{},
+	}
+
+	client := fakeclientset.NewSimpleClientset(n1, n2, p1)
+	dp := &api.DeschedulerPolicy{
+		Strategies: api.StrategyList{
+			"RemovePodsViolatingNodeTaints": api.DeschedulerStrategy{
+				Enabled: true,
+			},
+		},
+	}
+
+	stopChannel := make(chan struct{})
+	defer close(stopChannel)
+
+	rs, err := options.NewDeschedulerServer()
+	if err != nil {
+		t.Fatalf("Unable to initialize server: %v", err)
+	}
+	rs.Client = client
+	rs.DeschedulingInterval = 100 * time.Millisecond
+	go func() {
+		err := RunDeschedulerStrategies(ctx, rs, dp, "v1beta1", stopChannel)
+		if err != nil {
+			t.Fatalf("Unable to run descheduler strategies: %v", err)
+		}
+	}()
+
+	// Wait for few cycles and then verify the only pod still exists
+	time.Sleep(300 * time.Millisecond)
+	pods, err := client.CoreV1().Pods(p1.Namespace).List(ctx, metav1.ListOptions{})
+	if err != nil {
+		t.Errorf("Unable to list pods: %v", err)
+	}
+	if len(pods.Items) < 1 {
+		t.Errorf("The pod was evicted before a node was tained")
+	}
+
+	n1WithTaint := n1.DeepCopy()
+	n1WithTaint.Spec.Taints = []v1.Taint{
+		{
+			Key:    "key",
+			Value:  "value",
+			Effect: v1.TaintEffectNoSchedule,
+		},
+	}
+
+	if _, err := client.CoreV1().Nodes().Update(ctx, n1WithTaint, metav1.UpdateOptions{}); err != nil {
+		t.Fatalf("Unable to update node: %v\n", err)
+	}
+
+	if err := wait.PollImmediate(100*time.Millisecond, time.Second, func() (bool, error) {
+		// Get over evicted pod result in panic
+		//pods, err := client.CoreV1().Pods(p1.Namespace).Get(p1.Name, metav1.GetOptions{})
+		// List is better, it does not panic.
+		// Though once the pod is evicted, List starts to error with "can't assign or convert v1beta1.Eviction into v1.Pod"
+		pods, err := client.CoreV1().Pods(p1.Namespace).List(ctx, metav1.ListOptions{})
+		if err == nil {
+			if len(pods.Items) > 0 {
+				return false, nil
+			}
+			return true, nil
+		}
+		if strings.Contains(err.Error(), "can't assign or convert v1beta1.Eviction into v1.Pod") {
+			return true, nil
+		}
+
+		return false, nil
+	}); err != nil {
+		t.Fatalf("Unable to evict pod, node taint did not get propagated to descheduler strategies")
+	}
+}

pkg/descheduler/evictions/evictions.go

@@ -17,20 +17,116 @@ limitations under the License.
 package evictions
 
 import (
+	"context"
 	"fmt"
+	"strings"
 
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	policy "k8s.io/api/policy/v1beta1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/errors"
 	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/kubernetes/scheme"
+	clientcorev1 "k8s.io/client-go/kubernetes/typed/core/v1"
+	"k8s.io/client-go/tools/record"
+	"k8s.io/klog/v2"
+	podutil "sigs.k8s.io/descheduler/pkg/descheduler/pod"
+	"sigs.k8s.io/descheduler/pkg/utils"
 
-	eutils "github.com/kubernetes-incubator/descheduler/pkg/descheduler/evictions/utils"
+	eutils "sigs.k8s.io/descheduler/pkg/descheduler/evictions/utils"
 )
 
-func EvictPod(client clientset.Interface, pod *v1.Pod, policyGroupVersion string, dryRun bool) (bool, error) {
+const (
+	evictPodAnnotationKey = "descheduler.alpha.kubernetes.io/evict"
+)
+
+// nodePodEvictedCount keeps count of pods evicted on node
+type nodePodEvictedCount map[*v1.Node]int
+
+type PodEvictor struct {
+	client                clientset.Interface
+	policyGroupVersion    string
+	dryRun                bool
+	maxPodsToEvictPerNode int
+	nodepodCount          nodePodEvictedCount
+	evictLocalStoragePods bool
+}
+
+func NewPodEvictor(
+	client clientset.Interface,
+	policyGroupVersion string,
+	dryRun bool,
+	maxPodsToEvictPerNode int,
+	nodes []*v1.Node,
+	evictLocalStoragePods bool,
+) *PodEvictor {
+	var nodePodCount = make(nodePodEvictedCount)
+	for _, node := range nodes {
+		// Initialize podsEvicted till now with 0.
+		nodePodCount[node] = 0
+	}
+
+	return &PodEvictor{
+		client:                client,
+		policyGroupVersion:    policyGroupVersion,
+		dryRun:                dryRun,
+		maxPodsToEvictPerNode: maxPodsToEvictPerNode,
+		nodepodCount:          nodePodCount,
+		evictLocalStoragePods: evictLocalStoragePods,
+	}
+}
+
+// NodeEvicted gives a number of pods evicted for node
+func (pe *PodEvictor) NodeEvicted(node *v1.Node) int {
+	return pe.nodepodCount[node]
+}
+
+// TotalEvicted gives a number of pods evicted through all nodes
+func (pe *PodEvictor) TotalEvicted() int {
+	var total int
+	for _, count := range pe.nodepodCount {
+		total += count
+	}
+	return total
+}
+
+// EvictPod returns non-nil error only when evicting a pod on a node is not
+// possible (due to maxPodsToEvictPerNode constraint). Success is true when the pod
+// is evicted on the server side.
+func (pe *PodEvictor) EvictPod(ctx context.Context, pod *v1.Pod, node *v1.Node, reasons ...string) (bool, error) {
+	var reason string
+	if len(reasons) > 0 {
+		reason = " (" + strings.Join(reasons, ", ") + ")"
+	}
+	if pe.maxPodsToEvictPerNode > 0 && pe.nodepodCount[node]+1 > pe.maxPodsToEvictPerNode {
+		return false, fmt.Errorf("Maximum number %v of evicted pods per %q node reached", pe.maxPodsToEvictPerNode, node.Name)
+	}
+
+	err := evictPod(ctx, pe.client, pod, pe.policyGroupVersion, pe.dryRun)
+	if err != nil {
+		// err is used only for logging purposes
+		klog.ErrorS(err, "Error evicting pod", "pod", klog.KObj(pod), "reason", reason)
+		return false, nil
+	}
+
+	pe.nodepodCount[node]++
+	if pe.dryRun {
+		klog.V(1).InfoS("Evicted pod in dry run mode", "pod", klog.KObj(pod), "reason", reason)
+	} else {
+		klog.V(1).InfoS("Evicted pod", "pod", klog.KObj(pod), "reason", reason)
+		eventBroadcaster := record.NewBroadcaster()
+		eventBroadcaster.StartStructuredLogging(3)
+		eventBroadcaster.StartRecordingToSink(&clientcorev1.EventSinkImpl{Interface: pe.client.CoreV1().Events(pod.Namespace)})
+		r := eventBroadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "sigs.k8s.io.descheduler"})
+		r.Event(pod, v1.EventTypeNormal, "Descheduled", fmt.Sprintf("pod evicted by sigs.k8s.io/descheduler%s", reason))
+	}
+	return true, nil
+}
+
+func evictPod(ctx context.Context, client clientset.Interface, pod *v1.Pod, policyGroupVersion string, dryRun bool) error {
 	if dryRun {
-		return true, nil
+		return nil
 	}
 	deleteOptions := &metav1.DeleteOptions{}
 	// GracePeriodSeconds ?
@@ -45,15 +141,133 @@ func EvictPod(client clientset.Interface, pod *v1.Pod, policyGroupVersion string
 		},
 		DeleteOptions: deleteOptions,
 	}
-	err := client.Policy().Evictions(eviction.Namespace).Evict(eviction)
+	err := client.PolicyV1beta1().Evictions(eviction.Namespace).Evict(ctx, eviction)
 
-	if err == nil {
-		return true, nil
-	} else if apierrors.IsTooManyRequests(err) {
-		return false, fmt.Errorf("error when evicting pod (ignoring) %q: %v", pod.Name, err)
-	} else if apierrors.IsNotFound(err) {
-		return true, fmt.Errorf("pod not found when evicting %q: %v", pod.Name, err)
-	} else {
-		return false, err
+	if apierrors.IsTooManyRequests(err) {
+		return fmt.Errorf("error when evicting pod (ignoring) %q: %v", pod.Name, err)
+	}
+	if apierrors.IsNotFound(err) {
+		return fmt.Errorf("pod not found when evicting %q: %v", pod.Name, err)
+	}
+	return err
+}
+
+type Options struct {
+	priority *int32
+}
+
+// WithPriorityThreshold sets a threshold for pod's priority class.
+// Any pod whose priority class is lower is evictable.
+func WithPriorityThreshold(priority int32) func(opts *Options) {
+	return func(opts *Options) {
+		var p int32 = priority
+		opts.priority = &p
 	}
 }
+
+type constraint func(pod *v1.Pod) error
+
+type evictable struct {
+	constraints []constraint
+}
+
+// Evictable provides an implementation of IsEvictable(IsEvictable(pod *v1.Pod) bool).
+// The method accepts a list of options which allow to extend constraints
+// which decides when a pod is considered evictable.
+func (pe *PodEvictor) Evictable(opts ...func(opts *Options)) *evictable {
+	options := &Options{}
+	for _, opt := range opts {
+		opt(options)
+	}
+
+	ev := &evictable{}
+	if !pe.evictLocalStoragePods {
+		ev.constraints = append(ev.constraints, func(pod *v1.Pod) error {
+			if IsPodWithLocalStorage(pod) {
+				return fmt.Errorf("pod has local storage and descheduler is not configured with --evict-local-storage-pods")
+			}
+			return nil
+		})
+	}
+	if options.priority != nil {
+		ev.constraints = append(ev.constraints, func(pod *v1.Pod) error {
+			if IsPodEvictableBasedOnPriority(pod, *options.priority) {
+				return nil
+			}
+			return fmt.Errorf("pod has higher priority than specified priority class threshold")
+		})
+	}
+	return ev
+}
+
+// IsEvictable decides when a pod is evictable
+func (ev *evictable) IsEvictable(pod *v1.Pod) bool {
+	checkErrs := []error{}
+	if IsCriticalPod(pod) {
+		checkErrs = append(checkErrs, fmt.Errorf("pod is critical"))
+	}
+
+	ownerRefList := podutil.OwnerRef(pod)
+	if IsDaemonsetPod(ownerRefList) {
+		checkErrs = append(checkErrs, fmt.Errorf("pod is a DaemonSet pod"))
+	}
+
+	if len(ownerRefList) == 0 {
+		checkErrs = append(checkErrs, fmt.Errorf("pod does not have any ownerrefs"))
+	}
+
+	if IsMirrorPod(pod) {
+		checkErrs = append(checkErrs, fmt.Errorf("pod is a mirror pod"))
+	}
+
+	for _, c := range ev.constraints {
+		if err := c(pod); err != nil {
+			checkErrs = append(checkErrs, err)
+		}
+	}
+
+	if len(checkErrs) > 0 && !HaveEvictAnnotation(pod) {
+		klog.V(4).InfoS("Pod lacks an eviction annotation and fails the following checks", "pod", klog.KObj(pod), "checks", errors.NewAggregate(checkErrs).Error())
+		return false
+	}
+	return true
+}
+
+func IsCriticalPod(pod *v1.Pod) bool {
+	return utils.IsCriticalPod(pod)
+}
+
+func IsDaemonsetPod(ownerRefList []metav1.OwnerReference) bool {
+	for _, ownerRef := range ownerRefList {
+		if ownerRef.Kind == "DaemonSet" {
+			return true
+		}
+	}
+	return false
+}
+
+// IsMirrorPod checks whether the pod is a mirror pod.
+func IsMirrorPod(pod *v1.Pod) bool {
+	return utils.IsMirrorPod(pod)
+}
+
+// HaveEvictAnnotation checks if the pod have evict annotation
+func HaveEvictAnnotation(pod *v1.Pod) bool {
+	_, found := pod.ObjectMeta.Annotations[evictPodAnnotationKey]
+	return found
+}
+
+func IsPodWithLocalStorage(pod *v1.Pod) bool {
+	for _, volume := range pod.Spec.Volumes {
+		if volume.HostPath != nil || volume.EmptyDir != nil {
+			return true
+		}
+	}
+
+	return false
+}
+
+// IsPodEvictableBasedOnPriority checks if the given pod is evictable based on priority resolved from pod Spec.
+func IsPodEvictableBasedOnPriority(pod *v1.Pod, priority int32) bool {
+	return pod.Spec.Priority == nil || *pod.Spec.Priority < priority
+}

pkg/descheduler/evictions/evictions_test.go

@@ -17,24 +17,288 @@ limitations under the License.
 package evictions
 
 import (
-	"github.com/kubernetes-incubator/descheduler/test"
-	"k8s.io/api/core/v1"
+	"context"
+	"testing"
+
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/resource"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/kubernetes/fake"
 	core "k8s.io/client-go/testing"
-	"testing"
+	podutil "sigs.k8s.io/descheduler/pkg/descheduler/pod"
+	"sigs.k8s.io/descheduler/pkg/utils"
+	"sigs.k8s.io/descheduler/test"
 )
 
 func TestEvictPod(t *testing.T) {
-	n1 := test.BuildTestNode("node1", 1000, 2000, 9)
-	p1 := test.BuildTestPod("p1", 400, 0, n1.Name)
-	fakeClient := &fake.Clientset{}
-	fakeClient.Fake.AddReactor("list", "pods", func(action core.Action) (bool, runtime.Object, error) {
-		return true, &v1.PodList{Items: []v1.Pod{*p1}}, nil
-	})
-	evicted, _ := EvictPod(fakeClient, p1, "v1", false)
-	if !evicted {
-		t.Errorf("Expected %v pod to be evicted", p1.Name)
+	ctx := context.Background()
+	node1 := test.BuildTestNode("node1", 1000, 2000, 9, nil)
+	pod1 := test.BuildTestPod("p1", 400, 0, "node1", nil)
+	tests := []struct {
+		description string
+		node        *v1.Node
+		pod         *v1.Pod
+		pods        []v1.Pod
+		want        error
+	}{
+		{
+			description: "test pod eviction - pod present",
+			node:        node1,
+			pod:         pod1,
+			pods:        []v1.Pod{*pod1},
+			want:        nil,
+		},
+		{
+			description: "test pod eviction - pod absent",
+			node:        node1,
+			pod:         pod1,
+			pods:        []v1.Pod{*test.BuildTestPod("p2", 400, 0, "node1", nil), *test.BuildTestPod("p3", 450, 0, "node1", nil)},
+			want:        nil,
+		},
+	}
+
+	for _, test := range tests {
+		fakeClient := &fake.Clientset{}
+		fakeClient.Fake.AddReactor("list", "pods", func(action core.Action) (bool, runtime.Object, error) {
+			return true, &v1.PodList{Items: test.pods}, nil
+		})
+		got := evictPod(ctx, fakeClient, test.pod, "v1", false)
+		if got != test.want {
+			t.Errorf("Test error for Desc: %s. Expected %v pod eviction to be %v, got %v", test.description, test.pod.Name, test.want, got)
+		}
+	}
+}
+
+func TestIsEvictable(t *testing.T) {
+	n1 := test.BuildTestNode("node1", 1000, 2000, 13, nil)
+	lowPriority := int32(800)
+	highPriority := int32(900)
+	type testCase struct {
+		pod                   *v1.Pod
+		runBefore             func(*v1.Pod)
+		evictLocalStoragePods bool
+		priorityThreshold     *int32
+		result                bool
+	}
+
+	testCases := []testCase{
+		{
+			pod: test.BuildTestPod("p1", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+			},
+			evictLocalStoragePods: false,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p2", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.Annotations = map[string]string{"descheduler.alpha.kubernetes.io/evict": "true"}
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+			},
+			evictLocalStoragePods: false,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p3", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
+			},
+			evictLocalStoragePods: false,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p4", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.Annotations = map[string]string{"descheduler.alpha.kubernetes.io/evict": "true"}
+				pod.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
+			},
+			evictLocalStoragePods: false,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p5", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				pod.Spec.Volumes = []v1.Volume{
+					{
+						Name: "sample",
+						VolumeSource: v1.VolumeSource{
+							HostPath: &v1.HostPathVolumeSource{Path: "somePath"},
+							EmptyDir: &v1.EmptyDirVolumeSource{
+								SizeLimit: resource.NewQuantity(int64(10), resource.BinarySI)},
+						},
+					},
+				}
+			},
+			evictLocalStoragePods: false,
+			result:                false,
+		}, {
+			pod: test.BuildTestPod("p6", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				pod.Spec.Volumes = []v1.Volume{
+					{
+						Name: "sample",
+						VolumeSource: v1.VolumeSource{
+							HostPath: &v1.HostPathVolumeSource{Path: "somePath"},
+							EmptyDir: &v1.EmptyDirVolumeSource{
+								SizeLimit: resource.NewQuantity(int64(10), resource.BinarySI)},
+						},
+					},
+				}
+			},
+			evictLocalStoragePods: true,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p7", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.Annotations = map[string]string{"descheduler.alpha.kubernetes.io/evict": "true"}
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				pod.Spec.Volumes = []v1.Volume{
+					{
+						Name: "sample",
+						VolumeSource: v1.VolumeSource{
+							HostPath: &v1.HostPathVolumeSource{Path: "somePath"},
+							EmptyDir: &v1.EmptyDirVolumeSource{
+								SizeLimit: resource.NewQuantity(int64(10), resource.BinarySI)},
+						},
+					},
+				}
+			},
+			evictLocalStoragePods: false,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p8", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetDaemonSetOwnerRefList()
+			},
+			evictLocalStoragePods: false,
+			result:                false,
+		}, {
+			pod: test.BuildTestPod("p9", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.Annotations = map[string]string{"descheduler.alpha.kubernetes.io/evict": "true"}
+				pod.ObjectMeta.OwnerReferences = test.GetDaemonSetOwnerRefList()
+			},
+			evictLocalStoragePods: false,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p10", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				pod.Annotations = test.GetMirrorPodAnnotation()
+			},
+			evictLocalStoragePods: false,
+			result:                false,
+		}, {
+			pod: test.BuildTestPod("p11", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				pod.Annotations = test.GetMirrorPodAnnotation()
+				pod.Annotations["descheduler.alpha.kubernetes.io/evict"] = "true"
+			},
+			evictLocalStoragePods: false,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p12", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				priority := utils.SystemCriticalPriority
+				pod.Spec.Priority = &priority
+			},
+			evictLocalStoragePods: false,
+			result:                false,
+		}, {
+			pod: test.BuildTestPod("p13", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				priority := utils.SystemCriticalPriority
+				pod.Spec.Priority = &priority
+				pod.Annotations = map[string]string{
+					"descheduler.alpha.kubernetes.io/evict": "true",
+				}
+			},
+			evictLocalStoragePods: false,
+			result:                true,
+		}, {
+			pod: test.BuildTestPod("p14", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				pod.Spec.Priority = &highPriority
+			},
+			evictLocalStoragePods: false,
+			priorityThreshold:     &lowPriority,
+			result:                false,
+		}, {
+			pod: test.BuildTestPod("p15", 400, 0, n1.Name, nil),
+			runBefore: func(pod *v1.Pod) {
+				pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+				pod.Annotations = map[string]string{"descheduler.alpha.kubernetes.io/evict": "true"}
+				pod.Spec.Priority = &highPriority
+			},
+			evictLocalStoragePods: false,
+			priorityThreshold:     &lowPriority,
+			result:                true,
+		},
+	}
+
+	for _, test := range testCases {
+		test.runBefore(test.pod)
+
+		podEvictor := &PodEvictor{
+			evictLocalStoragePods: test.evictLocalStoragePods,
+		}
+
+		evictable := podEvictor.Evictable()
+		if test.priorityThreshold != nil {
+			evictable = podEvictor.Evictable(WithPriorityThreshold(*test.priorityThreshold))
+		}
+
+		result := evictable.IsEvictable(test.pod)
+		if result != test.result {
+			t.Errorf("IsEvictable should return for pod %s %t, but it returns %t", test.pod.Name, test.result, result)
+		}
+
+	}
+}
+func TestPodTypes(t *testing.T) {
+	n1 := test.BuildTestNode("node1", 1000, 2000, 9, nil)
+	p1 := test.BuildTestPod("p1", 400, 0, n1.Name, nil)
+
+	// These won't be evicted.
+	p2 := test.BuildTestPod("p2", 400, 0, n1.Name, nil)
+	p3 := test.BuildTestPod("p3", 400, 0, n1.Name, nil)
+	p4 := test.BuildTestPod("p4", 400, 0, n1.Name, nil)
+
+	p1.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
+	// The following 4 pods won't get evicted.
+	// A daemonset.
+	//p2.Annotations = test.GetDaemonSetAnnotation()
+	p2.ObjectMeta.OwnerReferences = test.GetDaemonSetOwnerRefList()
+	// A pod with local storage.
+	p3.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
+	p3.Spec.Volumes = []v1.Volume{
+		{
+			Name: "sample",
+			VolumeSource: v1.VolumeSource{
+				HostPath: &v1.HostPathVolumeSource{Path: "somePath"},
+				EmptyDir: &v1.EmptyDirVolumeSource{
+					SizeLimit: resource.NewQuantity(int64(10), resource.BinarySI)},
+			},
+		},
+	}
+	// A Mirror Pod.
+	p4.Annotations = test.GetMirrorPodAnnotation()
+	if !IsMirrorPod(p4) {
+		t.Errorf("Expected p4 to be a mirror pod.")
+	}
+	if !IsPodWithLocalStorage(p3) {
+		t.Errorf("Expected p3 to be a pod with local storage.")
+	}
+	ownerRefList := podutil.OwnerRef(p2)
+	if !IsDaemonsetPod(ownerRefList) {
+		t.Errorf("Expected p2 to be a daemonset pod.")
+	}
+	ownerRefList = podutil.OwnerRef(p1)
+	if IsDaemonsetPod(ownerRefList) || IsPodWithLocalStorage(p1) || IsCriticalPod(p1) || IsMirrorPod(p1) {
+		t.Errorf("Expected p1 to be a normal pod.")
 	}
 
 }

pkg/descheduler/node/node.go

@@ -17,40 +17,35 @@ limitations under the License.
 package node
 
 import (
-	"time"
+	"context"
 
-	"github.com/golang/glog"
-	"github.com/kubernetes-incubator/descheduler/pkg/utils"
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/labels"
+	coreinformers "k8s.io/client-go/informers/core/v1"
 	clientset "k8s.io/client-go/kubernetes"
-	corelisters "k8s.io/client-go/listers/core/v1"
-	"k8s.io/client-go/tools/cache"
+	"k8s.io/klog/v2"
+	"sigs.k8s.io/descheduler/pkg/utils"
 )
 
 // ReadyNodes returns ready nodes irrespective of whether they are
 // schedulable or not.
-func ReadyNodes(client clientset.Interface, nodeSelector string, stopChannel <-chan struct{}) ([]*v1.Node, error) {
+func ReadyNodes(ctx context.Context, client clientset.Interface, nodeInformer coreinformers.NodeInformer, nodeSelector string, stopChannel <-chan struct{}) ([]*v1.Node, error) {
 	ns, err := labels.Parse(nodeSelector)
 	if err != nil {
 		return []*v1.Node{}, err
 	}
 
 	var nodes []*v1.Node
-	nl := GetNodeLister(client, stopChannel)
-	if nl != nil {
-		// err is defined above
-		if nodes, err = nl.List(ns); err != nil {
-			return []*v1.Node{}, err
-		}
+	// err is defined above
+	if nodes, err = nodeInformer.Lister().List(ns); err != nil {
+		return []*v1.Node{}, err
 	}
 
 	if len(nodes) == 0 {
-		glog.V(2).Infof("node lister returned empty list, now fetch directly")
+		klog.V(2).InfoS("Node lister returned empty list, now fetch directly")
 
-		nItems, err := client.Core().Nodes().List(metav1.ListOptions{LabelSelector: nodeSelector})
+		nItems, err := client.CoreV1().Nodes().List(ctx, metav1.ListOptions{LabelSelector: nodeSelector})
 		if err != nil {
 			return []*v1.Node{}, err
 		}
@@ -74,22 +69,6 @@ func ReadyNodes(client clientset.Interface, nodeSelector string, stopChannel <-c
 	return readyNodes, nil
 }
 
-func GetNodeLister(client clientset.Interface, stopChannel <-chan struct{}) corelisters.NodeLister {
-	if stopChannel == nil {
-		return nil
-	}
-	listWatcher := cache.NewListWatchFromClient(client.Core().RESTClient(), "nodes", v1.NamespaceAll, fields.Everything())
-	store := cache.NewIndexer(cache.MetaNamespaceKeyFunc, cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc})
-	nodeLister := corelisters.NewNodeLister(store)
-	reflector := cache.NewReflector(listWatcher, &v1.Node{}, store, time.Hour)
-	go reflector.Run(stopChannel)
-
-	// To give some time so that listing works, chosen randomly
-	time.Sleep(100 * time.Millisecond)
-
-	return nodeLister
-}
-
 // IsReady checks if the descheduler could run against given node.
 func IsReady(node *v1.Node) bool {
 	for i := range node.Status.Conditions {
@@ -99,31 +78,28 @@ func IsReady(node *v1.Node) bool {
 		// - NodeOutOfDisk condition status is ConditionFalse,
 		// - NodeNetworkUnavailable condition status is ConditionFalse.
 		if cond.Type == v1.NodeReady && cond.Status != v1.ConditionTrue {
-			glog.V(1).Infof("Ignoring node %v with %v condition status %v", node.Name, cond.Type, cond.Status)
+			klog.V(1).InfoS("Ignoring node", "node", klog.KObj(node), "condition", cond.Type, "status", cond.Status)
 			return false
 		} /*else if cond.Type == v1.NodeOutOfDisk && cond.Status != v1.ConditionFalse {
-			glog.V(4).Infof("Ignoring node %v with %v condition status %v", node.Name, cond.Type, cond.Status)
+			klog.V(4).InfoS("Ignoring node with condition status", "node", klog.KObj(node.Name), "condition", cond.Type, "status", cond.Status)
 			return false
 		} else if cond.Type == v1.NodeNetworkUnavailable && cond.Status != v1.ConditionFalse {
-			glog.V(4).Infof("Ignoring node %v with %v condition status %v", node.Name, cond.Type, cond.Status)
+			klog.V(4).InfoS("Ignoring node with condition status", "node", klog.KObj(node.Name), "condition", cond.Type, "status", cond.Status)
 			return false
 		}*/
 	}
 	// Ignore nodes that are marked unschedulable
 	/*if node.Spec.Unschedulable {
-		glog.V(4).Infof("Ignoring node %v since it is unschedulable", node.Name)
+		klog.V(4).InfoS("Ignoring node since it is unschedulable", "node", klog.KObj(node.Name))
 		return false
 	}*/
 	return true
 }
 
-// IsNodeUschedulable checks if the node is unschedulable. This is helper function to check only in case of
+// IsNodeUnschedulable checks if the node is unschedulable. This is helper function to check only in case of
 // underutilized node so that they won't be accounted for.
-func IsNodeUschedulable(node *v1.Node) bool {
-	if node.Spec.Unschedulable {
-		return true
-	}
-	return false
+func IsNodeUnschedulable(node *v1.Node) bool {
+	return node.Spec.Unschedulable
 }
 
 // PodFitsAnyNode checks if the given pod fits any of the given nodes, based on
@@ -136,12 +112,9 @@ func PodFitsAnyNode(pod *v1.Pod, nodes []*v1.Node) bool {
 		if err != nil || !ok {
 			continue
 		}
-		if ok {
-			if !IsNodeUschedulable(node) {
-				glog.V(2).Infof("Pod %v can possibly be scheduled on %v", pod.Name, node.Name)
-				return true
-			}
-			return false
+		if !IsNodeUnschedulable(node) {
+			klog.V(2).InfoS("Pod can possibly be scheduled on a different node", "pod", klog.KObj(pod), "node", klog.KObj(node))
+			return true
 		}
 	}
 	return false
@@ -153,15 +126,15 @@ func PodFitsCurrentNode(pod *v1.Pod, node *v1.Node) bool {
 	ok, err := utils.PodMatchNodeSelector(pod, node)
 
 	if err != nil {
-		glog.Error(err)
+		klog.ErrorS(err, "Failed to match node selector")
 		return false
 	}
 
 	if !ok {
-		glog.V(1).Infof("Pod %v does not fit on node %v", pod.Name, node.Name)
+		klog.V(2).InfoS("Pod does not fit on node", "pod", klog.KObj(pod), "node", klog.KObj(node))
 		return false
 	}
 
-	glog.V(3).Infof("Pod %v fits on node %v", pod.Name, node.Name)
+	klog.V(2).InfoS("Pod fits on node", "pod", klog.KObj(pod), "node", klog.KObj(node))
 	return true
 }

pkg/descheduler/node/node_test.go

@@ -17,64 +17,71 @@ limitations under the License.
 package node
 
 import (
+	"context"
 	"testing"
 
-	"github.com/kubernetes-incubator/descheduler/test"
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/informers"
 	"k8s.io/client-go/kubernetes/fake"
+	"sigs.k8s.io/descheduler/test"
 )
 
 func TestReadyNodes(t *testing.T) {
-	node1 := test.BuildTestNode("node1", 1000, 2000, 9)
-	node1.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeOutOfDisk, Status: v1.ConditionTrue}}
-	node2 := test.BuildTestNode("node2", 1000, 2000, 9)
-	node3 := test.BuildTestNode("node3", 1000, 2000, 9)
-	node3.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeMemoryPressure, Status: v1.ConditionTrue}}
-	node4 := test.BuildTestNode("node4", 1000, 2000, 9)
-	node4.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeNetworkUnavailable, Status: v1.ConditionTrue}}
-	node5 := test.BuildTestNode("node5", 1000, 2000, 9)
-	node5.Spec.Unschedulable = true
-	node6 := test.BuildTestNode("node6", 1000, 2000, 9)
-	node6.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeReady, Status: v1.ConditionFalse}}
+	node1 := test.BuildTestNode("node2", 1000, 2000, 9, nil)
+	node2 := test.BuildTestNode("node3", 1000, 2000, 9, nil)
+	node2.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeMemoryPressure, Status: v1.ConditionTrue}}
+	node3 := test.BuildTestNode("node4", 1000, 2000, 9, nil)
+	node3.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeNetworkUnavailable, Status: v1.ConditionTrue}}
+	node4 := test.BuildTestNode("node5", 1000, 2000, 9, nil)
+	node4.Spec.Unschedulable = true
+	node5 := test.BuildTestNode("node6", 1000, 2000, 9, nil)
+	node5.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeReady, Status: v1.ConditionFalse}}
 
 	if !IsReady(node1) {
-		t.Errorf("Expected %v to be ready", node1.Name)
-	}
-	if !IsReady(node2) {
 		t.Errorf("Expected %v to be ready", node2.Name)
 	}
-	if !IsReady(node3) {
+	if !IsReady(node2) {
 		t.Errorf("Expected %v to be ready", node3.Name)
 	}
-	if !IsReady(node4) {
+	if !IsReady(node3) {
 		t.Errorf("Expected %v to be ready", node4.Name)
 	}
-	if !IsReady(node5) {
+	if !IsReady(node4) {
 		t.Errorf("Expected %v to be ready", node5.Name)
 	}
-	if IsReady(node6) {
-		t.Errorf("Expected %v to be not ready", node6.Name)
+	if IsReady(node5) {
+		t.Errorf("Expected %v to be not ready", node5.Name)
 	}
 
 }
 
 func TestReadyNodesWithNodeSelector(t *testing.T) {
-	node1 := test.BuildTestNode("node1", 1000, 2000, 9)
+	ctx := context.Background()
+	node1 := test.BuildTestNode("node1", 1000, 2000, 9, nil)
 	node1.Labels = map[string]string{"type": "compute"}
-	node2 := test.BuildTestNode("node2", 1000, 2000, 9)
+	node2 := test.BuildTestNode("node2", 1000, 2000, 9, nil)
 	node2.Labels = map[string]string{"type": "infra"}
 
 	fakeClient := fake.NewSimpleClientset(node1, node2)
 	nodeSelector := "type=compute"
-	nodes, _ := ReadyNodes(fakeClient, nodeSelector, nil)
+
+	sharedInformerFactory := informers.NewSharedInformerFactory(fakeClient, 0)
+	nodeInformer := sharedInformerFactory.Core().V1().Nodes()
+
+	stopChannel := make(chan struct{})
+	sharedInformerFactory.Start(stopChannel)
+	sharedInformerFactory.WaitForCacheSync(stopChannel)
+	defer close(stopChannel)
+
+	nodes, _ := ReadyNodes(ctx, fakeClient, nodeInformer, nodeSelector, nil)
 
 	if nodes[0].Name != "node1" {
 		t.Errorf("Expected node1, got %s", nodes[0].Name)
 	}
 }
 
-func TestIsNodeUschedulable(t *testing.T) {
+func TestIsNodeUnschedulable(t *testing.T) {
 	tests := []struct {
 		description     string
 		node            *v1.Node
@@ -96,7 +103,7 @@ func TestIsNodeUschedulable(t *testing.T) {
 		},
 	}
 	for _, test := range tests {
-		actualUnSchedulable := IsNodeUschedulable(test.node)
+		actualUnSchedulable := IsNodeUnschedulable(test.node)
 		if actualUnSchedulable != test.IsUnSchedulable {
 			t.Errorf("Test %#v failed", test.description)
 		}
@@ -247,6 +254,49 @@ func TestPodFitsAnyNode(t *testing.T) {
 			},
 			success: true,
 		},
+		{
+			description: "Pod expected to fit one of the nodes (error node first)",
+			pod: &v1.Pod{
+				Spec: v1.PodSpec{
+					Affinity: &v1.Affinity{
+						NodeAffinity: &v1.NodeAffinity{
+							RequiredDuringSchedulingIgnoredDuringExecution: &v1.NodeSelector{
+								NodeSelectorTerms: []v1.NodeSelectorTerm{
+									{
+										MatchExpressions: []v1.NodeSelectorRequirement{
+											{
+												Key:      nodeLabelKey,
+												Operator: "In",
+												Values: []string{
+													nodeLabelValue,
+												},
+											},
+										},
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+			nodes: []*v1.Node{
+				{
+					ObjectMeta: metav1.ObjectMeta{
+						Labels: map[string]string{
+							nodeLabelKey: "no",
+						},
+					},
+				},
+				{
+					ObjectMeta: metav1.ObjectMeta{
+						Labels: map[string]string{
+							nodeLabelKey: nodeLabelValue,
+						},
+					},
+				},
+			},
+			success: true,
+		},
 		{
 			description: "Pod expected to fit none of the nodes",
 			pod: &v1.Pod{

pkg/descheduler/pod/pods.go

@@ -17,127 +17,156 @@ limitations under the License.
 package pod
 
 import (
-	"k8s.io/api/core/v1"
+	"context"
+	"sort"
+
+	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/fields"
 	clientset "k8s.io/client-go/kubernetes"
-	api "k8s.io/kubernetes/pkg/apis/core"
-	"k8s.io/kubernetes/pkg/apis/core/v1/helper/qos"
-	"k8s.io/kubernetes/pkg/kubelet/types"
+	"sigs.k8s.io/descheduler/pkg/utils"
 )
 
-// checkLatencySensitiveResourcesForAContainer checks if there are any latency sensitive resources like GPUs.
-func checkLatencySensitiveResourcesForAContainer(rl v1.ResourceList) bool {
-	if rl == nil {
-		return false
-	}
-	for rName := range rl {
-		if rName == v1.ResourceNvidiaGPU {
-			return true
-		}
-		// TODO: Add support for other high value resources like hugepages etc. once kube is rebased to 1.8.
-	}
-	return false
+type Options struct {
+	filter             func(pod *v1.Pod) bool
+	includedNamespaces []string
+	excludedNamespaces []string
 }
 
-// IsLatencySensitivePod checks if a pod consumes high value devices like GPUs, hugepages or when cpu pinning enabled.
-func IsLatencySensitivePod(pod *v1.Pod) bool {
-	for _, container := range pod.Spec.Containers {
-		resourceList := container.Resources.Requests
-		if checkLatencySensitiveResourcesForAContainer(resourceList) {
-			return true
+// WithFilter sets a pod filter.
+// The filter function should return true if the pod should be returned from ListPodsOnANode
+func WithFilter(filter func(pod *v1.Pod) bool) func(opts *Options) {
+	return func(opts *Options) {
+		opts.filter = filter
+	}
+}
+
+// WithNamespaces sets included namespaces
+func WithNamespaces(namespaces []string) func(opts *Options) {
+	return func(opts *Options) {
+		opts.includedNamespaces = namespaces
+	}
+}
+
+// WithoutNamespaces sets excluded namespaces
+func WithoutNamespaces(namespaces []string) func(opts *Options) {
+	return func(opts *Options) {
+		opts.excludedNamespaces = namespaces
+	}
+}
+
+// ListPodsOnANode lists all of the pods on a node
+// It also accepts an optional "filter" function which can be used to further limit the pods that are returned.
+// (Usually this is podEvictor.Evictable().IsEvictable, in order to only list the evictable pods on a node, but can
+// be used by strategies to extend it if there are further restrictions, such as with NodeAffinity).
+func ListPodsOnANode(
+	ctx context.Context,
+	client clientset.Interface,
+	node *v1.Node,
+	opts ...func(opts *Options),
+) ([]*v1.Pod, error) {
+	options := &Options{}
+	for _, opt := range opts {
+		opt(options)
+	}
+
+	pods := make([]*v1.Pod, 0)
+
+	fieldSelectorString := "spec.nodeName=" + node.Name + ",status.phase!=" + string(v1.PodSucceeded) + ",status.phase!=" + string(v1.PodFailed)
+
+	if len(options.includedNamespaces) > 0 {
+		fieldSelector, err := fields.ParseSelector(fieldSelectorString)
+		if err != nil {
+			return []*v1.Pod{}, err
+		}
+
+		for _, namespace := range options.includedNamespaces {
+			podList, err := client.CoreV1().Pods(namespace).List(ctx,
+				metav1.ListOptions{FieldSelector: fieldSelector.String()})
+			if err != nil {
+				return []*v1.Pod{}, err
+			}
+			for i := range podList.Items {
+				if options.filter != nil && !options.filter(&podList.Items[i]) {
+					continue
+				}
+				pods = append(pods, &podList.Items[i])
+			}
+		}
+		return pods, nil
+	}
+
+	if len(options.excludedNamespaces) > 0 {
+		for _, namespace := range options.excludedNamespaces {
+			fieldSelectorString += ",metadata.namespace!=" + namespace
 		}
 	}
-	return false
-}
 
-// IsEvictable checks if a pod is evictable or not.
-func IsEvictable(pod *v1.Pod, evictLocalStoragePods bool) bool {
-	ownerRefList := OwnerRef(pod)
-	if IsMirrorPod(pod) || (!evictLocalStoragePods && IsPodWithLocalStorage(pod)) || len(ownerRefList) == 0 || IsDaemonsetPod(ownerRefList) || IsCriticalPod(pod) {
-		return false
-	}
-	return true
-}
-
-// ListEvictablePodsOnNode returns the list of evictable pods on node.
-func ListEvictablePodsOnNode(client clientset.Interface, node *v1.Node, evictLocalStoragePods bool) ([]*v1.Pod, error) {
-	pods, err := ListPodsOnANode(client, node)
-	if err != nil {
-		return []*v1.Pod{}, err
-	}
-	evictablePods := make([]*v1.Pod, 0)
-	for _, pod := range pods {
-		if !IsEvictable(pod, evictLocalStoragePods) {
-			continue
-		} else {
-			evictablePods = append(evictablePods, pod)
-		}
-	}
-	return evictablePods, nil
-}
-
-func ListPodsOnANode(client clientset.Interface, node *v1.Node) ([]*v1.Pod, error) {
-	fieldSelector, err := fields.ParseSelector("spec.nodeName=" + node.Name + ",status.phase!=" + string(api.PodSucceeded) + ",status.phase!=" + string(api.PodFailed))
+	fieldSelector, err := fields.ParseSelector(fieldSelectorString)
 	if err != nil {
 		return []*v1.Pod{}, err
 	}
 
-	podList, err := client.CoreV1().Pods(v1.NamespaceAll).List(
+	// INFO(jchaloup): field selectors do not work properly with listers
+	// Once the descheduler switches to pod listers (through informers),
+	// We need to flip to client-side filtering.
+	podList, err := client.CoreV1().Pods(v1.NamespaceAll).List(ctx,
 		metav1.ListOptions{FieldSelector: fieldSelector.String()})
 	if err != nil {
 		return []*v1.Pod{}, err
 	}
 
-	pods := make([]*v1.Pod, 0)
 	for i := range podList.Items {
+		// fake client does not support field selectors
+		// so let's filter based on the node name as well (quite cheap)
+		if podList.Items[i].Spec.NodeName != node.Name {
+			continue
+		}
+		if options.filter != nil && !options.filter(&podList.Items[i]) {
+			continue
+		}
 		pods = append(pods, &podList.Items[i])
 	}
 	return pods, nil
 }
 
-func IsCriticalPod(pod *v1.Pod) bool {
-	return types.IsCriticalPod(pod)
-}
-
-func IsBestEffortPod(pod *v1.Pod) bool {
-	return qos.GetPodQOS(pod) == v1.PodQOSBestEffort
-}
-
-func IsBurstablePod(pod *v1.Pod) bool {
-	return qos.GetPodQOS(pod) == v1.PodQOSBurstable
-}
-
-func IsGuaranteedPod(pod *v1.Pod) bool {
-	return qos.GetPodQOS(pod) == v1.PodQOSGuaranteed
-}
-
-func IsDaemonsetPod(ownerRefList []metav1.OwnerReference) bool {
-	for _, ownerRef := range ownerRefList {
-		if ownerRef.Kind == "DaemonSet" {
-			return true
-		}
-	}
-	return false
-}
-
-// IsMirrorPod checks whether the pod is a mirror pod.
-func IsMirrorPod(pod *v1.Pod) bool {
-	_, found := pod.ObjectMeta.Annotations[types.ConfigMirrorAnnotationKey]
-	return found
-}
-
-func IsPodWithLocalStorage(pod *v1.Pod) bool {
-	for _, volume := range pod.Spec.Volumes {
-		if volume.HostPath != nil || volume.EmptyDir != nil {
-			return true
-		}
-	}
-
-	return false
-}
-
 // OwnerRef returns the ownerRefList for the pod.
 func OwnerRef(pod *v1.Pod) []metav1.OwnerReference {
 	return pod.ObjectMeta.GetOwnerReferences()
 }
+
+func IsBestEffortPod(pod *v1.Pod) bool {
+	return utils.GetPodQOS(pod) == v1.PodQOSBestEffort
+}
+
+func IsBurstablePod(pod *v1.Pod) bool {
+	return utils.GetPodQOS(pod) == v1.PodQOSBurstable
+}
+
+func IsGuaranteedPod(pod *v1.Pod) bool {
+	return utils.GetPodQOS(pod) == v1.PodQOSGuaranteed
+}
+
+// SortPodsBasedOnPriorityLowToHigh sorts pods based on their priorities from low to high.
+// If pods have same priorities, they will be sorted by QoS in the following order:
+// BestEffort, Burstable, Guaranteed
+func SortPodsBasedOnPriorityLowToHigh(pods []*v1.Pod) {
+	sort.Slice(pods, func(i, j int) bool {
+		if pods[i].Spec.Priority == nil && pods[j].Spec.Priority != nil {
+			return true
+		}
+		if pods[j].Spec.Priority == nil && pods[i].Spec.Priority != nil {
+			return false
+		}
+		if (pods[j].Spec.Priority == nil && pods[i].Spec.Priority == nil) || (*pods[i].Spec.Priority == *pods[j].Spec.Priority) {
+			if IsBestEffortPod(pods[i]) {
+				return true
+			}
+			if IsBurstablePod(pods[i]) && IsGuaranteedPod(pods[j]) {
+				return true
+			}
+			return false
+		}
+		return *pods[i].Spec.Priority < *pods[j].Spec.Priority
+	})
+}

pkg/descheduler/pod/pods_test.go

@@ -17,68 +17,99 @@ limitations under the License.
 package pod
 
 import (
+	"context"
+	"fmt"
+	"reflect"
+	"strings"
 	"testing"
 
-	"github.com/kubernetes-incubator/descheduler/test"
-	"k8s.io/api/core/v1"
-	"k8s.io/apimachinery/pkg/api/resource"
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/kubernetes/fake"
+	core "k8s.io/client-go/testing"
+	"sigs.k8s.io/descheduler/test"
 )
 
-func TestPodTypes(t *testing.T) {
-	n1 := test.BuildTestNode("node1", 1000, 2000, 9)
-	p1 := test.BuildTestPod("p1", 400, 0, n1.Name)
+var (
+	lowPriority  = int32(0)
+	highPriority = int32(10000)
+)
 
-	// These won't be evicted.
-	p2 := test.BuildTestPod("p2", 400, 0, n1.Name)
-	p3 := test.BuildTestPod("p3", 400, 0, n1.Name)
-	p4 := test.BuildTestPod("p4", 400, 0, n1.Name)
-	p5 := test.BuildTestPod("p5", 400, 0, n1.Name)
-	p6 := test.BuildTestPod("p6", 400, 0, n1.Name)
-	p6.Spec.Containers[0].Resources.Requests[v1.ResourceNvidiaGPU] = *resource.NewMilliQuantity(3, resource.DecimalSI)
-
-	p6.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
-
-	p1.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
-	// The following 4 pods won't get evicted.
-	// A daemonset.
-	//p2.Annotations = test.GetDaemonSetAnnotation()
-	p2.ObjectMeta.OwnerReferences = test.GetDaemonSetOwnerRefList()
-	// A pod with local storage.
-	p3.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
-	p3.Spec.Volumes = []v1.Volume{
+func TestListPodsOnANode(t *testing.T) {
+	testCases := []struct {
+		name             string
+		pods             map[string][]v1.Pod
+		node             *v1.Node
+		expectedPodCount int
+	}{
 		{
-			Name: "sample",
-			VolumeSource: v1.VolumeSource{
-				HostPath: &v1.HostPathVolumeSource{Path: "somePath"},
-				EmptyDir: &v1.EmptyDirVolumeSource{
-					SizeLimit: resource.NewQuantity(int64(10), resource.BinarySI)},
+			name: "test listing pods on a node",
+			pods: map[string][]v1.Pod{
+				"n1": {
+					*test.BuildTestPod("pod1", 100, 0, "n1", nil),
+					*test.BuildTestPod("pod2", 100, 0, "n1", nil),
+				},
+				"n2": {*test.BuildTestPod("pod3", 100, 0, "n2", nil)},
 			},
+			node:             test.BuildTestNode("n1", 2000, 3000, 10, nil),
+			expectedPodCount: 2,
 		},
 	}
-	// A Mirror Pod.
-	p4.Annotations = test.GetMirrorPodAnnotation()
-	// A Critical Pod.
-	p5.Namespace = "kube-system"
-	p5.Annotations = test.GetCriticalPodAnnotation()
-	if !IsMirrorPod(p4) {
-		t.Errorf("Expected p4 to be a mirror pod.")
+	for _, testCase := range testCases {
+		fakeClient := &fake.Clientset{}
+		fakeClient.Fake.AddReactor("list", "pods", func(action core.Action) (bool, runtime.Object, error) {
+			list := action.(core.ListAction)
+			fieldString := list.GetListRestrictions().Fields.String()
+			if strings.Contains(fieldString, "n1") {
+				return true, &v1.PodList{Items: testCase.pods["n1"]}, nil
+			} else if strings.Contains(fieldString, "n2") {
+				return true, &v1.PodList{Items: testCase.pods["n2"]}, nil
+			}
+			return true, nil, fmt.Errorf("Failed to list: %v", list)
+		})
+		pods, _ := ListPodsOnANode(context.TODO(), fakeClient, testCase.node)
+		if len(pods) != testCase.expectedPodCount {
+			t.Errorf("expected %v pods on node %v, got %+v", testCase.expectedPodCount, testCase.node.Name, len(pods))
+		}
+	}
+}
+
+func TestSortPodsBasedOnPriorityLowToHigh(t *testing.T) {
+	n1 := test.BuildTestNode("n1", 4000, 3000, 9, nil)
+
+	p1 := test.BuildTestPod("p1", 400, 0, n1.Name, func(pod *v1.Pod) {
+		test.SetPodPriority(pod, lowPriority)
+	})
+
+	// BestEffort
+	p2 := test.BuildTestPod("p2", 400, 0, n1.Name, func(pod *v1.Pod) {
+		test.SetPodPriority(pod, highPriority)
+		test.MakeBestEffortPod(pod)
+	})
+
+	// Burstable
+	p3 := test.BuildTestPod("p3", 400, 0, n1.Name, func(pod *v1.Pod) {
+		test.SetPodPriority(pod, highPriority)
+		test.MakeBurstablePod(pod)
+	})
+
+	// Guaranteed
+	p4 := test.BuildTestPod("p4", 400, 100, n1.Name, func(pod *v1.Pod) {
+		test.SetPodPriority(pod, highPriority)
+		test.MakeGuaranteedPod(pod)
+	})
+
+	// Best effort with nil priorities.
+	p5 := test.BuildTestPod("p5", 400, 100, n1.Name, test.MakeBestEffortPod)
+	p5.Spec.Priority = nil
+
+	p6 := test.BuildTestPod("p6", 400, 100, n1.Name, test.MakeGuaranteedPod)
+	p6.Spec.Priority = nil
+
+	podList := []*v1.Pod{p4, p3, p2, p1, p6, p5}
+
+	SortPodsBasedOnPriorityLowToHigh(podList)
+	if !reflect.DeepEqual(podList[len(podList)-1], p4) {
+		t.Errorf("Expected last pod in sorted list to be %v which of highest priority and guaranteed but got %v", p4, podList[len(podList)-1])
 	}
-	if !IsCriticalPod(p5) {
-		t.Errorf("Expected p5 to be a critical pod.")
-	}
-	if !IsPodWithLocalStorage(p3) {
-		t.Errorf("Expected p3 to be a pod with local storage.")
-	}
-	ownerRefList := OwnerRef(p2)
-	if !IsDaemonsetPod(ownerRefList) {
-		t.Errorf("Expected p2 to be a daemonset pod.")
-	}
-	ownerRefList = OwnerRef(p1)
-	if IsDaemonsetPod(ownerRefList) || IsPodWithLocalStorage(p1) || IsCriticalPod(p1) || IsMirrorPod(p1) {
-		t.Errorf("Expected p1 to be a normal pod.")
-	}
-	if !IsLatencySensitivePod(p6) {
-		t.Errorf("Expected p6 to be latency sensitive pod")
-	}
-
 }

pkg/descheduler/policyconfig.go

@@ -21,17 +21,16 @@ import (
 	"io/ioutil"
 
 	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/klog/v2"
 
-	"github.com/golang/glog"
-	"github.com/kubernetes-incubator/descheduler/pkg/api"
-	_ "github.com/kubernetes-incubator/descheduler/pkg/api/install"
-	"github.com/kubernetes-incubator/descheduler/pkg/api/v1alpha1"
-	"github.com/kubernetes-incubator/descheduler/pkg/descheduler/scheme"
+	"sigs.k8s.io/descheduler/pkg/api"
+	"sigs.k8s.io/descheduler/pkg/api/v1alpha1"
+	"sigs.k8s.io/descheduler/pkg/descheduler/scheme"
 )
 
 func LoadPolicyConfig(policyConfigFile string) (*api.DeschedulerPolicy, error) {
 	if policyConfigFile == "" {
-		glog.V(1).Infof("policy config file not specified")
+		klog.V(1).InfoS("Policy config file not specified")
 		return nil, nil
 	}
 

pkg/descheduler/scheme/scheme.go

@@ -17,17 +17,24 @@ limitations under the License.
 package scheme
 
 import (
-	"os"
-
-	"k8s.io/apimachinery/pkg/apimachinery/announced"
-	"k8s.io/apimachinery/pkg/apimachinery/registered"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/serializer"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	"sigs.k8s.io/descheduler/pkg/api"
+	"sigs.k8s.io/descheduler/pkg/api/v1alpha1"
+	"sigs.k8s.io/descheduler/pkg/apis/componentconfig"
+	componentconfigv1alpha1 "sigs.k8s.io/descheduler/pkg/apis/componentconfig/v1alpha1"
 )
 
 var (
-	GroupFactoryRegistry = make(announced.APIGroupFactoryRegistry)
-	Registry             = registered.NewOrDie(os.Getenv("DESCHEDULER_API_VERSIONS"))
-	Scheme               = runtime.NewScheme()
-	Codecs               = serializer.NewCodecFactory(Scheme)
+	Scheme = runtime.NewScheme()
+	Codecs = serializer.NewCodecFactory(Scheme)
 )
+
+func init() {
+	utilruntime.Must(api.AddToScheme(Scheme))
+	utilruntime.Must(v1alpha1.AddToScheme(Scheme))
+
+	utilruntime.Must(componentconfig.AddToScheme(Scheme))
+	utilruntime.Must(componentconfigv1alpha1.AddToScheme(Scheme))
+}

pkg/descheduler/strategies/duplicates.go

@@ -17,82 +17,200 @@ limitations under the License.
 package strategies
 
 import (
+	"context"
+	"fmt"
+	"math"
+	"reflect"
+	"sort"
 	"strings"
 
-	"github.com/golang/glog"
-
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/util/sets"
 	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/klog/v2"
 
-	"github.com/kubernetes-incubator/descheduler/cmd/descheduler/app/options"
-	"github.com/kubernetes-incubator/descheduler/pkg/api"
-	"github.com/kubernetes-incubator/descheduler/pkg/descheduler/evictions"
-	podutil "github.com/kubernetes-incubator/descheduler/pkg/descheduler/pod"
+	"sigs.k8s.io/descheduler/pkg/api"
+	"sigs.k8s.io/descheduler/pkg/descheduler/evictions"
+	podutil "sigs.k8s.io/descheduler/pkg/descheduler/pod"
+	"sigs.k8s.io/descheduler/pkg/utils"
 )
 
-//type creator string
-type DuplicatePodsMap map[string][]*v1.Pod
+func validateRemoveDuplicatePodsParams(params *api.StrategyParameters) error {
+	if params == nil {
+		return nil
+	}
+	// At most one of include/exclude can be set
+	if params.Namespaces != nil && len(params.Namespaces.Include) > 0 && len(params.Namespaces.Exclude) > 0 {
+		return fmt.Errorf("only one of Include/Exclude namespaces can be set")
+	}
+	if params.ThresholdPriority != nil && params.ThresholdPriorityClassName != "" {
+		return fmt.Errorf("only one of thresholdPriority and thresholdPriorityClassName can be set")
+	}
+
+	return nil
+}
+
+type podOwner struct {
+	namespace, kind, name string
+	imagesHash            string
+}
 
 // RemoveDuplicatePods removes the duplicate pods on node. This strategy evicts all duplicate pods on node.
 // A pod is said to be a duplicate of other if both of them are from same creator, kind and are within the same
-// namespace. As of now, this strategy won't evict daemonsets, mirror pods, critical pods and pods with local storages.
-func RemoveDuplicatePods(ds *options.DeschedulerServer, strategy api.DeschedulerStrategy, policyGroupVersion string, nodes []*v1.Node, nodepodCount nodePodEvictedCount) {
-	if !strategy.Enabled {
+// namespace, and have at least one container with the same image.
+// As of now, this strategy won't evict daemonsets, mirror pods, critical pods and pods with local storages.
+func RemoveDuplicatePods(
+	ctx context.Context,
+	client clientset.Interface,
+	strategy api.DeschedulerStrategy,
+	nodes []*v1.Node,
+	podEvictor *evictions.PodEvictor,
+) {
+	if err := validateRemoveDuplicatePodsParams(strategy.Params); err != nil {
+		klog.ErrorS(err, "Invalid RemoveDuplicatePods parameters")
+		return
+	}
+	thresholdPriority, err := utils.GetPriorityFromStrategyParams(ctx, client, strategy.Params)
+	if err != nil {
+		klog.ErrorS(err, "Failed to get threshold priority from strategy's params")
 		return
 	}
-	deleteDuplicatePods(ds.Client, policyGroupVersion, nodes, ds.DryRun, nodepodCount, ds.MaxNoOfPodsToEvictPerNode, ds.EvictLocalStoragePods)
-}
 
-// deleteDuplicatePods evicts the pod from node and returns the count of evicted pods.
-func deleteDuplicatePods(client clientset.Interface, policyGroupVersion string, nodes []*v1.Node, dryRun bool, nodepodCount nodePodEvictedCount, maxPodsToEvict int, evictLocalStoragePods bool) int {
-	podsEvicted := 0
+	var includedNamespaces, excludedNamespaces []string
+	if strategy.Params != nil && strategy.Params.Namespaces != nil {
+		includedNamespaces = strategy.Params.Namespaces.Include
+		excludedNamespaces = strategy.Params.Namespaces.Exclude
+	}
+
+	evictable := podEvictor.Evictable(evictions.WithPriorityThreshold(thresholdPriority))
+
+	duplicatePods := make(map[podOwner]map[string][]*v1.Pod)
+	ownerKeyOccurence := make(map[podOwner]int32)
+	nodeCount := 0
+	nodeMap := make(map[string]*v1.Node)
+
 	for _, node := range nodes {
-		glog.V(1).Infof("Processing node: %#v", node.Name)
-		dpm := ListDuplicatePodsOnANode(client, node, evictLocalStoragePods)
-		for creator, pods := range dpm {
-			if len(pods) > 1 {
-				glog.V(1).Infof("%#v", creator)
-				// i = 0 does not evict the first pod
-				for i := 1; i < len(pods); i++ {
-					if maxPodsToEvict > 0 && nodepodCount[node]+1 > maxPodsToEvict {
+		klog.V(1).InfoS("Processing node", "node", klog.KObj(node))
+		pods, err := podutil.ListPodsOnANode(ctx,
+			client,
+			node,
+			podutil.WithFilter(evictable.IsEvictable),
+			podutil.WithNamespaces(includedNamespaces),
+			podutil.WithoutNamespaces(excludedNamespaces),
+		)
+		if err != nil {
+			klog.ErrorS(err, "Error listing evictable pods on node", "node", klog.KObj(node))
+			continue
+		}
+		nodeMap[node.Name] = node
+		nodeCount++
+		// Each pod has a list of owners and a list of containers, and each container has 1 image spec.
+		// For each pod, we go through all the OwnerRef/Image mappings and represent them as a "key" string.
+		// All of those mappings together makes a list of "key" strings that essentially represent that pod's uniqueness.
+		// This list of keys representing a single pod is then sorted alphabetically.
+		// If any other pod has a list that matches that pod's list, those pods are undeniably duplicates for the following reasons:
+		//   - The 2 pods have the exact same ownerrefs
+		//   - The 2 pods have the exact same container images
+		//
+		// duplicateKeysMap maps the first Namespace/Kind/Name/Image in a pod's list to a 2D-slice of all the other lists where that is the first key
+		// (Since we sort each pod's list, we only need to key the map on the first entry in each list. Any pod that doesn't have
+		// the same first entry is clearly not a duplicate. This makes lookup quick and minimizes storage needed).
+		// If any of the existing lists for that first key matches the current pod's list, the current pod is a duplicate.
+		// If not, then we add this pod's list to the list of lists for that key.
+		duplicateKeysMap := map[string][][]string{}
+		for _, pod := range pods {
+			ownerRefList := podutil.OwnerRef(pod)
+			if hasExcludedOwnerRefKind(ownerRefList, strategy) || len(ownerRefList) == 0 {
+				continue
+			}
+			podContainerKeys := make([]string, 0, len(ownerRefList)*len(pod.Spec.Containers))
+			imageList := []string{}
+			for _, container := range pod.Spec.Containers {
+				imageList = append(imageList, container.Image)
+			}
+			sort.Strings(imageList)
+			imagesHash := strings.Join(imageList, "#")
+			for _, ownerRef := range ownerRefList {
+				ownerKey := podOwner{
+					namespace:  pod.ObjectMeta.Namespace,
+					kind:       ownerRef.Kind,
+					name:       ownerRef.Name,
+					imagesHash: imagesHash,
+				}
+				ownerKeyOccurence[ownerKey] = ownerKeyOccurence[ownerKey] + 1
+				for _, image := range imageList {
+					// Namespace/Kind/Name should be unique for the cluster.
+					// We also consider the image, as 2 pods could have the same owner but serve different purposes
+					// So any non-unique Namespace/Kind/Name/Image pattern is a duplicate pod.
+					s := strings.Join([]string{pod.ObjectMeta.Namespace, ownerRef.Kind, ownerRef.Name, image}, "/")
+					podContainerKeys = append(podContainerKeys, s)
+				}
+			}
+			sort.Strings(podContainerKeys)
+
+			// If there have been any other pods with the same first "key", look through all the lists to see if any match
+			if existing, ok := duplicateKeysMap[podContainerKeys[0]]; ok {
+				matched := false
+				for _, keys := range existing {
+					if reflect.DeepEqual(keys, podContainerKeys) {
+						matched = true
+						klog.V(3).InfoS("Duplicate found", "pod", klog.KObj(pod))
+						for _, ownerRef := range ownerRefList {
+							ownerKey := podOwner{
+								namespace:  pod.ObjectMeta.Namespace,
+								kind:       ownerRef.Kind,
+								name:       ownerRef.Name,
+								imagesHash: imagesHash,
+							}
+							if _, ok := duplicatePods[ownerKey]; !ok {
+								duplicatePods[ownerKey] = make(map[string][]*v1.Pod)
+							}
+							duplicatePods[ownerKey][node.Name] = append(duplicatePods[ownerKey][node.Name], pod)
+						}
 						break
 					}
-					success, err := evictions.EvictPod(client, pods[i], policyGroupVersion, dryRun)
-					if !success {
-						glog.Infof("Error when evicting pod: %#v (%#v)", pods[i].Name, err)
-					} else {
-						nodepodCount[node]++
-						glog.V(1).Infof("Evicted pod: %#v (%#v)", pods[i].Name, err)
+				}
+				if !matched {
+					// Found no matches, add this list of keys to the list of lists that have the same first key
+					duplicateKeysMap[podContainerKeys[0]] = append(duplicateKeysMap[podContainerKeys[0]], podContainerKeys)
+				}
+			} else {
+				// This is the first pod we've seen that has this first "key" entry
+				duplicateKeysMap[podContainerKeys[0]] = [][]string{podContainerKeys}
+			}
+		}
+	}
+
+	// 1. how many pods can be evicted to respect uniform placement of pods among viable nodes?
+	for ownerKey, nodes := range duplicatePods {
+		upperAvg := int(math.Ceil(float64(ownerKeyOccurence[ownerKey]) / float64(nodeCount)))
+		for nodeName, pods := range nodes {
+			klog.V(2).InfoS("Average occurrence per node", "node", klog.KObj(nodeMap[nodeName]), "ownerKey", ownerKey, "avg", upperAvg)
+			// list of duplicated pods does not contain the original referential pod
+			if len(pods)+1 > upperAvg {
+				// It's assumed all duplicated pods are in the same priority class
+				// TODO(jchaloup): check if the pod has a different node to lend to
+				for _, pod := range pods[upperAvg-1:] {
+					if _, err := podEvictor.EvictPod(ctx, pod, nodeMap[nodeName], "RemoveDuplicatePods"); err != nil {
+						klog.ErrorS(err, "Error evicting pod", "pod", klog.KObj(pod))
+						break
 					}
 				}
 			}
 		}
-		podsEvicted += nodepodCount[node]
 	}
-	return podsEvicted
 }
 
-// ListDuplicatePodsOnANode lists duplicate pods on a given node.
-func ListDuplicatePodsOnANode(client clientset.Interface, node *v1.Node, evictLocalStoragePods bool) DuplicatePodsMap {
-	pods, err := podutil.ListEvictablePodsOnNode(client, node, evictLocalStoragePods)
-	if err != nil {
-		return nil
+func hasExcludedOwnerRefKind(ownerRefs []metav1.OwnerReference, strategy api.DeschedulerStrategy) bool {
+	if strategy.Params == nil || strategy.Params.RemoveDuplicates == nil {
+		return false
 	}
-	return FindDuplicatePods(pods)
-}
-
-// FindDuplicatePods takes a list of pods and returns a duplicatePodsMap.
-func FindDuplicatePods(pods []*v1.Pod) DuplicatePodsMap {
-	dpm := DuplicatePodsMap{}
-	for _, pod := range pods {
-		// Ignoring the error here as in the ListDuplicatePodsOnNode function we call ListEvictablePodsOnNode
-		// which checks for error.
-		ownerRefList := podutil.OwnerRef(pod)
-		for _, ownerRef := range ownerRefList {
-			// ownerRef doesn't need namespace since the assumption is owner needs to be in the same namespace.
-			s := strings.Join([]string{ownerRef.Kind, ownerRef.Name}, "/")
-			dpm[s] = append(dpm[s], pod)
+	exclude := sets.NewString(strategy.Params.RemoveDuplicates.ExcludeOwnerKinds...)
+	for _, owner := range ownerRefs {
+		if exclude.Has(owner.Kind) {
+			return true
 		}
 	}
-	return dpm
+	return false
 }

pkg/descheduler/strategies/duplicates_test.go

@@ -17,40 +17,82 @@ limitations under the License.
 package strategies
 
 import (
+	"context"
 	"testing"
 
-	"github.com/kubernetes-incubator/descheduler/test"
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/api/resource"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/kubernetes/fake"
 	core "k8s.io/client-go/testing"
+	"sigs.k8s.io/descheduler/pkg/api"
+	"sigs.k8s.io/descheduler/pkg/descheduler/evictions"
+	"sigs.k8s.io/descheduler/pkg/utils"
+	"sigs.k8s.io/descheduler/test"
 )
 
-//TODO:@ravisantoshgudimetla This could be made table driven.
+func buildTestPodWithImage(podName, node, image string) *v1.Pod {
+	pod := test.BuildTestPod(podName, 100, 0, node, test.SetRSOwnerRef)
+	pod.Spec.Containers = append(pod.Spec.Containers, v1.Container{
+		Name:  image,
+		Image: image,
+	})
+	return pod
+}
+
 func TestFindDuplicatePods(t *testing.T) {
-	node := test.BuildTestNode("n1", 2000, 3000, 10)
-	p1 := test.BuildTestPod("p1", 100, 0, node.Name)
-	p2 := test.BuildTestPod("p2", 100, 0, node.Name)
-	p3 := test.BuildTestPod("p3", 100, 0, node.Name)
-	p4 := test.BuildTestPod("p4", 100, 0, node.Name)
-	p5 := test.BuildTestPod("p5", 100, 0, node.Name)
-	p6 := test.BuildTestPod("p6", 100, 0, node.Name)
-	p7 := test.BuildTestPod("p7", 100, 0, node.Name)
-	p8 := test.BuildTestPod("p8", 100, 0, node.Name)
-	p9 := test.BuildTestPod("p9", 100, 0, node.Name)
+	ctx := context.Background()
+	// first setup pods
+	node1 := test.BuildTestNode("n1", 2000, 3000, 10, nil)
+	node2 := test.BuildTestNode("n2", 2000, 3000, 10, nil)
 
-	// All the following pods expect for one will be evicted.
-	p1.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
-	p2.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
-	p3.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
-	p8.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
-	p9.ObjectMeta.OwnerReferences = test.GetReplicaSetOwnerRefList()
+	p1 := test.BuildTestPod("p1", 100, 0, node1.Name, nil)
+	p1.Namespace = "dev"
+	p2 := test.BuildTestPod("p2", 100, 0, node1.Name, nil)
+	p2.Namespace = "dev"
+	p3 := test.BuildTestPod("p3", 100, 0, node1.Name, nil)
+	p3.Namespace = "dev"
+	p4 := test.BuildTestPod("p4", 100, 0, node1.Name, nil)
+	p5 := test.BuildTestPod("p5", 100, 0, node1.Name, nil)
+	p6 := test.BuildTestPod("p6", 100, 0, node1.Name, nil)
+	p7 := test.BuildTestPod("p7", 100, 0, node1.Name, nil)
+	p7.Namespace = "kube-system"
+	p8 := test.BuildTestPod("p8", 100, 0, node1.Name, nil)
+	p8.Namespace = "test"
+	p9 := test.BuildTestPod("p9", 100, 0, node1.Name, nil)
+	p9.Namespace = "test"
+	p10 := test.BuildTestPod("p10", 100, 0, node1.Name, nil)
+	p10.Namespace = "test"
+	p11 := test.BuildTestPod("p11", 100, 0, node1.Name, nil)
+	p11.Namespace = "different-images"
+	p12 := test.BuildTestPod("p12", 100, 0, node1.Name, nil)
+	p12.Namespace = "different-images"
+	p13 := test.BuildTestPod("p13", 100, 0, node1.Name, nil)
+	p13.Namespace = "different-images"
+	p14 := test.BuildTestPod("p14", 100, 0, node1.Name, nil)
+	p14.Namespace = "different-images"
 
-	// The following 4 pods won't get evicted.
-	// A daemonset.
+	// ### Evictable Pods ###
+
+	// Three Pods in the "default" Namespace, bound to same ReplicaSet. 2 should be evicted.
+	ownerRef1 := test.GetReplicaSetOwnerRefList()
+	p1.ObjectMeta.OwnerReferences = ownerRef1
+	p2.ObjectMeta.OwnerReferences = ownerRef1
+	p3.ObjectMeta.OwnerReferences = ownerRef1
+
+	// Three Pods in the "test" Namespace, bound to same ReplicaSet. 2 should be evicted.
+	ownerRef2 := test.GetReplicaSetOwnerRefList()
+	p8.ObjectMeta.OwnerReferences = ownerRef2
+	p9.ObjectMeta.OwnerReferences = ownerRef2
+	p10.ObjectMeta.OwnerReferences = ownerRef2
+
+	// ### Non-evictable Pods ###
+
+	// A DaemonSet.
 	p4.ObjectMeta.OwnerReferences = test.GetDaemonSetOwnerRefList()
-	// A pod with local storage.
+
+	// A Pod with local storage.
 	p5.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
 	p5.Spec.Volumes = []v1.Volume{
 		{
@@ -62,24 +104,314 @@ func TestFindDuplicatePods(t *testing.T) {
 			},
 		},
 	}
+
 	// A Mirror Pod.
 	p6.Annotations = test.GetMirrorPodAnnotation()
+
 	// A Critical Pod.
-	p7.Namespace = "kube-system"
-	p7.Annotations = test.GetCriticalPodAnnotation()
-	expectedEvictedPodCount := 2
-	fakeClient := &fake.Clientset{}
-	fakeClient.Fake.AddReactor("list", "pods", func(action core.Action) (bool, runtime.Object, error) {
-		return true, &v1.PodList{Items: []v1.Pod{*p1, *p2, *p3, *p4, *p5, *p6, *p7, *p8, *p9}}, nil
+	priority := utils.SystemCriticalPriority
+	p7.Spec.Priority = &priority
+
+	// Same owners, but different images
+	p11.Spec.Containers[0].Image = "foo"
+	p11.ObjectMeta.OwnerReferences = ownerRef1
+	p12.Spec.Containers[0].Image = "bar"
+	p12.ObjectMeta.OwnerReferences = ownerRef1
+
+	// Multiple containers
+	p13.ObjectMeta.OwnerReferences = ownerRef1
+	p13.Spec.Containers = append(p13.Spec.Containers, v1.Container{
+		Name:  "foo",
+		Image: "foo",
 	})
-	fakeClient.Fake.AddReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
-		return true, node, nil
-	})
-	npe := nodePodEvictedCount{}
-	npe[node] = 0
-	podsEvicted := deleteDuplicatePods(fakeClient, "v1", []*v1.Node{node}, false, npe, 2, false)
-	if podsEvicted != expectedEvictedPodCount {
-		t.Errorf("Unexpected no of pods evicted")
+
+	testCases := []struct {
+		description             string
+		maxPodsToEvictPerNode   int
+		pods                    []v1.Pod
+		expectedEvictedPodCount int
+		strategy                api.DeschedulerStrategy
+	}{
+		{
+			description:             "Three pods in the `dev` Namespace, bound to same ReplicaSet. 1 should be evicted.",
+			maxPodsToEvictPerNode:   5,
+			pods:                    []v1.Pod{*p1, *p2, *p3},
+			expectedEvictedPodCount: 1,
+			strategy:                api.DeschedulerStrategy{},
+		},
+		{
+			description:             "Three pods in the `dev` Namespace, bound to same ReplicaSet, but ReplicaSet kind is excluded. 0 should be evicted.",
+			maxPodsToEvictPerNode:   5,
+			pods:                    []v1.Pod{*p1, *p2, *p3},
+			expectedEvictedPodCount: 0,
+			strategy:                api.DeschedulerStrategy{Params: &api.StrategyParameters{RemoveDuplicates: &api.RemoveDuplicates{ExcludeOwnerKinds: []string{"ReplicaSet"}}}},
+		},
+		{
+			description:             "Three Pods in the `test` Namespace, bound to same ReplicaSet. 1 should be evicted.",
+			maxPodsToEvictPerNode:   5,
+			pods:                    []v1.Pod{*p8, *p9, *p10},
+			expectedEvictedPodCount: 1,
+			strategy:                api.DeschedulerStrategy{},
+		},
+		{
+			description:             "Three Pods in the `dev` Namespace, three Pods in the `test` Namespace. Bound to ReplicaSet with same name. 4 should be evicted.",
+			maxPodsToEvictPerNode:   5,
+			pods:                    []v1.Pod{*p1, *p2, *p3, *p8, *p9, *p10},
+			expectedEvictedPodCount: 2,
+			strategy:                api.DeschedulerStrategy{},
+		},
+		{
+			description:             "Pods are: part of DaemonSet, with local storage, mirror pod annotation, critical pod annotation - none should be evicted.",
+			maxPodsToEvictPerNode:   2,
+			pods:                    []v1.Pod{*p4, *p5, *p6, *p7},
+			expectedEvictedPodCount: 0,
+			strategy:                api.DeschedulerStrategy{},
+		},
+		{
+			description:             "Test all Pods: 4 should be evicted.",
+			maxPodsToEvictPerNode:   5,
+			pods:                    []v1.Pod{*p1, *p2, *p3, *p4, *p5, *p6, *p7, *p8, *p9, *p10},
+			expectedEvictedPodCount: 2,
+			strategy:                api.DeschedulerStrategy{},
+		},
+		{
+			description:             "Pods with the same owner but different images should not be evicted",
+			maxPodsToEvictPerNode:   5,
+			pods:                    []v1.Pod{*p11, *p12},
+			expectedEvictedPodCount: 0,
+			strategy:                api.DeschedulerStrategy{},
+		},
+		{
+			description:             "Pods with multiple containers should not match themselves",
+			maxPodsToEvictPerNode:   5,
+			pods:                    []v1.Pod{*p13},
+			expectedEvictedPodCount: 0,
+			strategy:                api.DeschedulerStrategy{},
+		},
+		{
+			description:             "Pods with matching ownerrefs and at not all matching image should not trigger an eviction",
+			maxPodsToEvictPerNode:   5,
+			pods:                    []v1.Pod{*p11, *p13},
+			expectedEvictedPodCount: 0,
+			strategy:                api.DeschedulerStrategy{},
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.description, func(t *testing.T) {
+			fakeClient := &fake.Clientset{}
+			fakeClient.Fake.AddReactor("list", "pods", func(action core.Action) (bool, runtime.Object, error) {
+				return true, &v1.PodList{Items: testCase.pods}, nil
+			})
+			podEvictor := evictions.NewPodEvictor(
+				fakeClient,
+				"v1",
+				false,
+				testCase.maxPodsToEvictPerNode,
+				[]*v1.Node{node1, node2},
+				false,
+			)
+
+			RemoveDuplicatePods(ctx, fakeClient, testCase.strategy, []*v1.Node{node1, node2}, podEvictor)
+			podsEvicted := podEvictor.TotalEvicted()
+			if podsEvicted != testCase.expectedEvictedPodCount {
+				t.Errorf("Test error for description: %s. Expected evicted pods count %v, got %v", testCase.description, testCase.expectedEvictedPodCount, podsEvicted)
+			}
+		})
 	}
 
 }
+
+func TestRemoveDuplicatesUniformly(t *testing.T) {
+	ctx := context.Background()
+
+	setRSOwnerRef2 := func(pod *v1.Pod) {
+		pod.ObjectMeta.OwnerReferences = []metav1.OwnerReference{
+			{Kind: "ReplicaSet", APIVersion: "v1", Name: "replicaset-2"},
+		}
+	}
+	setTwoRSOwnerRef := func(pod *v1.Pod) {
+		pod.ObjectMeta.OwnerReferences = []metav1.OwnerReference{
+			{Kind: "ReplicaSet", APIVersion: "v1", Name: "replicaset-1"},
+			{Kind: "ReplicaSet", APIVersion: "v1", Name: "replicaset-2"},
+		}
+	}
+
+	testCases := []struct {
+		description             string
+		maxPodsToEvictPerNode   int
+		pods                    []v1.Pod
+		nodes                   []*v1.Node
+		expectedEvictedPodCount int
+		strategy                api.DeschedulerStrategy
+	}{
+		{
+			description: "Evict pods uniformly",
+			pods: []v1.Pod{
+				// (5,3,1) -> (3,3,3) -> 2 evictions
+				*test.BuildTestPod("p1", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p2", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p3", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p4", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p5", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p6", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p7", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p8", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p9", 100, 0, "n3", test.SetRSOwnerRef),
+			},
+			expectedEvictedPodCount: 2,
+			nodes: []*v1.Node{
+				test.BuildTestNode("n1", 2000, 3000, 10, nil),
+				test.BuildTestNode("n2", 2000, 3000, 10, nil),
+				test.BuildTestNode("n3", 2000, 3000, 10, nil),
+			},
+			strategy: api.DeschedulerStrategy{},
+		},
+		{
+			description: "Evict pods uniformly with one node left out",
+			pods: []v1.Pod{
+				// (5,3,1) -> (4,4,1) -> 1 eviction
+				*test.BuildTestPod("p1", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p2", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p3", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p4", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p5", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p6", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p7", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p8", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p9", 100, 0, "n3", test.SetRSOwnerRef),
+			},
+			expectedEvictedPodCount: 1,
+			nodes: []*v1.Node{
+				test.BuildTestNode("n1", 2000, 3000, 10, nil),
+				test.BuildTestNode("n2", 2000, 3000, 10, nil),
+			},
+			strategy: api.DeschedulerStrategy{},
+		},
+		{
+			description: "Evict pods uniformly with two replica sets",
+			pods: []v1.Pod{
+				// (5,3,1) -> (3,3,3) -> 2 evictions
+				*test.BuildTestPod("p11", 100, 0, "n1", setTwoRSOwnerRef),
+				*test.BuildTestPod("p12", 100, 0, "n1", setTwoRSOwnerRef),
+				*test.BuildTestPod("p13", 100, 0, "n1", setTwoRSOwnerRef),
+				*test.BuildTestPod("p14", 100, 0, "n1", setTwoRSOwnerRef),
+				*test.BuildTestPod("p15", 100, 0, "n1", setTwoRSOwnerRef),
+				*test.BuildTestPod("p16", 100, 0, "n2", setTwoRSOwnerRef),
+				*test.BuildTestPod("p17", 100, 0, "n2", setTwoRSOwnerRef),
+				*test.BuildTestPod("p18", 100, 0, "n2", setTwoRSOwnerRef),
+				*test.BuildTestPod("p19", 100, 0, "n3", setTwoRSOwnerRef),
+			},
+			expectedEvictedPodCount: 4,
+			nodes: []*v1.Node{
+				test.BuildTestNode("n1", 2000, 3000, 10, nil),
+				test.BuildTestNode("n2", 2000, 3000, 10, nil),
+				test.BuildTestNode("n3", 2000, 3000, 10, nil),
+			},
+			strategy: api.DeschedulerStrategy{},
+		},
+		{
+			description: "Evict pods uniformly with two owner references",
+			pods: []v1.Pod{
+				// (5,3,1) -> (3,3,3) -> 2 evictions
+				*test.BuildTestPod("p11", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p12", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p13", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p14", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p15", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p16", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p17", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p18", 100, 0, "n2", test.SetRSOwnerRef),
+				*test.BuildTestPod("p19", 100, 0, "n3", test.SetRSOwnerRef),
+				// (1,3,5) -> (3,3,3) -> 2 evictions
+				*test.BuildTestPod("p21", 100, 0, "n1", setRSOwnerRef2),
+				*test.BuildTestPod("p22", 100, 0, "n2", setRSOwnerRef2),
+				*test.BuildTestPod("p23", 100, 0, "n2", setRSOwnerRef2),
+				*test.BuildTestPod("p24", 100, 0, "n2", setRSOwnerRef2),
+				*test.BuildTestPod("p25", 100, 0, "n3", setRSOwnerRef2),
+				*test.BuildTestPod("p26", 100, 0, "n3", setRSOwnerRef2),
+				*test.BuildTestPod("p27", 100, 0, "n3", setRSOwnerRef2),
+				*test.BuildTestPod("p28", 100, 0, "n3", setRSOwnerRef2),
+				*test.BuildTestPod("p29", 100, 0, "n3", setRSOwnerRef2),
+			},
+			expectedEvictedPodCount: 4,
+			nodes: []*v1.Node{
+				test.BuildTestNode("n1", 2000, 3000, 10, nil),
+				test.BuildTestNode("n2", 2000, 3000, 10, nil),
+				test.BuildTestNode("n3", 2000, 3000, 10, nil),
+			},
+			strategy: api.DeschedulerStrategy{},
+		},
+		{
+			description: "Evict pods with number of pods less than nodes",
+			pods: []v1.Pod{
+				// (2,0,0) -> (1,1,0) -> 1 eviction
+				*test.BuildTestPod("p1", 100, 0, "n1", test.SetRSOwnerRef),
+				*test.BuildTestPod("p2", 100, 0, "n1", test.SetRSOwnerRef),
+			},
+			expectedEvictedPodCount: 1,
+			nodes: []*v1.Node{
+				test.BuildTestNode("n1", 2000, 3000, 10, nil),
+				test.BuildTestNode("n2", 2000, 3000, 10, nil),
+				test.BuildTestNode("n3", 2000, 3000, 10, nil),
+			},
+			strategy: api.DeschedulerStrategy{},
+		},
+		{
+			description: "Evict pods with number of pods less than nodes, but ignore different pods with the same ownerref",
+			pods: []v1.Pod{
+				// (1, 0, 0) for "bar","baz" images -> no eviction, even with a matching ownerKey
+				// (2, 0, 0) for "foo" image -> (1,1,0) - 1 eviction
+				// In this case the only "real" duplicates are p1 and p4, so one of those should be evicted
+				*buildTestPodWithImage("p1", "n1", "foo"),
+				*buildTestPodWithImage("p2", "n1", "bar"),
+				*buildTestPodWithImage("p3", "n1", "baz"),
+				*buildTestPodWithImage("p4", "n1", "foo"),
+			},
+			expectedEvictedPodCount: 1,
+			nodes: []*v1.Node{
+				test.BuildTestNode("n1", 2000, 3000, 10, nil),
+				test.BuildTestNode("n2", 2000, 3000, 10, nil),
+				test.BuildTestNode("n3", 2000, 3000, 10, nil),
+			},
+			strategy: api.DeschedulerStrategy{},
+		},
+		{
+			description: "Evict pods with a single pod with three nodes",
+			pods: []v1.Pod{
+				// (2,0,0) -> (1,1,0) -> 1 eviction
+				*test.BuildTestPod("p1", 100, 0, "n1", test.SetRSOwnerRef),
+			},
+			expectedEvictedPodCount: 0,
+			nodes: []*v1.Node{
+				test.BuildTestNode("n1", 2000, 3000, 10, nil),
+				test.BuildTestNode("n2", 2000, 3000, 10, nil),
+				test.BuildTestNode("n3", 2000, 3000, 10, nil),
+			},
+			strategy: api.DeschedulerStrategy{},
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.description, func(t *testing.T) {
+			fakeClient := &fake.Clientset{}
+			fakeClient.Fake.AddReactor("list", "pods", func(action core.Action) (bool, runtime.Object, error) {
+				return true, &v1.PodList{Items: testCase.pods}, nil
+			})
+			podEvictor := evictions.NewPodEvictor(
+				fakeClient,
+				"v1",
+				false,
+				testCase.maxPodsToEvictPerNode,
+				testCase.nodes,
+				false,
+			)
+
+			RemoveDuplicatePods(ctx, fakeClient, testCase.strategy, testCase.nodes, podEvictor)
+			podsEvicted := podEvictor.TotalEvicted()
+			if podsEvicted != testCase.expectedEvictedPodCount {
+				t.Errorf("Test error for description: %s. Expected evicted pods count %v, got %v", testCase.description, testCase.expectedEvictedPodCount, podsEvicted)
+			}
+		})
+	}
+}