From 1931bd6c1a1b5eb9d44a96694fdc285edb77770b Mon Sep 17 00:00:00 2001
From: Christian van der Leeden <christian@vanderleeden.de>
Date: Thu, 1 Aug 2019 11:50:35 +0200
Subject: [PATCH 1/2] created example yaml files out of the readme instructions
 with a reference to the 0.9.0 docker image. Modified the readme so the make
 will work since it expects a certain file structure

---
 README.md                     |  8 ++++++
 examples/descheduler-job.yaml | 28 ++++++++++++++++++++
 examples/descheduler.yaml     | 50 +++++++++++++++++++++++++++++++++++
 3 files changed, 86 insertions(+)
 create mode 100644 examples/descheduler-job.yaml
 create mode 100644 examples/descheduler.yaml

diff --git a/README.md b/README.md
index 8898b10d0..4237509b7 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,8 @@ but relies on the default scheduler for that.
 
 ## Build and Run
 
+- Checkout the repo into your $GOPATH directory under src/github.com/kubernetes-incubator/descheduler
+
 Build descheduler:
 
 ```sh
@@ -38,6 +40,8 @@ and run descheduler:
 $ ./_output/bin/descheduler --kubeconfig <path to kubeconfig> --policy-config-file <path-to-policy-file>
 ```
 
+If you want more information about what descheduler is doing add `-v 1` to the command line
+
 For more information about available options run:
 ```
 $ ./_output/bin/descheduler --help
@@ -155,6 +159,10 @@ the policy `policy-file` is mounted as a volume from the config map.
 $ kubectl create -f descheduler-job.yaml
 ```
 
+### Examples
+
+See [descheduler.yaml](examples/descheduler.yaml) and [descheduler-job.yaml](examples/descheduler-job.yaml) for a combined yaml file of the above steps. 
+
 ## Policy and Strategies
 
 Descheduler's policy is configurable and includes strategies to be enabled or disabled.
diff --git a/examples/descheduler-job.yaml b/examples/descheduler-job.yaml
new file mode 100644
index 000000000..dfd049f62
--- /dev/null
+++ b/examples/descheduler-job.yaml
@@ -0,0 +1,28 @@
+---
+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: docker.io/aveshagarwal/descheduler:0.9.0
+          volumeMounts:
+            - mountPath: /policy-dir
+              name: policy-volume
+          command: ["/bin/descheduler",  "--policy-config-file", "/policy-dir/policy.yaml", "-v", "1"]
+      restartPolicy: "Never"
+      serviceAccountName: descheduler-sa
+      volumes:
+        - name: policy-volume
+          configMap:
+            name: descheduler-policy-configmap
\ No newline at end of file
diff --git a/examples/descheduler.yaml b/examples/descheduler.yaml
new file mode 100644
index 000000000..008937b8b
--- /dev/null
+++ b/examples/descheduler.yaml
@@ -0,0 +1,50 @@
+---
+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"]
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: descheduler-sa
+  namespace: kube-system
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: descheduler-user
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: descheduler-cluster-role
+subjects:
+  - kind: ServiceAccount
+    name: descheduler-sa
+    namespace: kube-system
+---
+kind: ConfigMap
+apiVersion: v1
+metadata:
+  name: descheduler-policy-configmap
+  namespace: kube-system
+data:
+  policy.yaml: |
+    apiVersion: "descheduler/v1alpha1"
+    kind: "DeschedulerPolicy"
+    strategies:
+      "RemovePodsViolatingNodeAffinity":
+        enabled: true
+        params:
+          nodeAffinityType:
+          - "requiredDuringSchedulingIgnoredDuringExecution"

From 68a106aed015ee9719fe664d507a72966cd84d67 Mon Sep 17 00:00:00 2001
From: Christian van der Leeden <christian@vanderleeden.de>
Date: Sat, 3 Aug 2019 11:41:52 +0200
Subject: [PATCH 2/2] changed policy, RemoveDuplicates is not automatically
 turned on, so used the policy.yaml file from the examples

---
 examples/descheduler.yaml | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/examples/descheduler.yaml b/examples/descheduler.yaml
index 008937b8b..3a27cdb46 100644
--- a/examples/descheduler.yaml
+++ b/examples/descheduler.yaml
@@ -43,8 +43,19 @@ data:
     apiVersion: "descheduler/v1alpha1"
     kind: "DeschedulerPolicy"
     strategies:
-      "RemovePodsViolatingNodeAffinity":
+      "RemoveDuplicates":
+        enabled: true
+      "RemovePodsViolatingInterPodAntiAffinity":
+        enabled: true
+      "LowNodeUtilization":
         enabled: true
         params:
-          nodeAffinityType:
-          - "requiredDuringSchedulingIgnoredDuringExecution"
+          nodeResourceUtilizationThresholds:
+            thresholds:
+              "cpu" : 20
+              "memory": 20
+              "pods": 20
+            targetThresholds:
+              "cpu" : 50
+              "memory": 50
+              "pods": 50
\ No newline at end of file