mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-26 21:31:18 +01:00
724 lines
27 KiB
Go
724 lines
27 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package removeduplicates
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import (
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"context"
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"testing"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/client-go/kubernetes/fake"
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"sigs.k8s.io/descheduler/pkg/framework/plugins/defaultevictor"
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frameworktesting "sigs.k8s.io/descheduler/pkg/framework/testing"
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frameworktypes "sigs.k8s.io/descheduler/pkg/framework/types"
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"sigs.k8s.io/descheduler/pkg/utils"
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"sigs.k8s.io/descheduler/test"
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)
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func buildTestPodWithImage(podName, node, image string) *v1.Pod {
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pod := test.BuildTestPod(podName, 100, 0, node, test.SetRSOwnerRef)
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pod.Spec.Containers = append(pod.Spec.Containers, v1.Container{
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Name: image,
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Image: image,
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})
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return pod
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}
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func TestFindDuplicatePods(t *testing.T) {
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// first setup pods
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node1 := test.BuildTestNode("n1", 2000, 3000, 10, nil)
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node2 := test.BuildTestNode("n2", 2000, 3000, 10, nil)
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node3 := test.BuildTestNode("n3", 2000, 3000, 10, func(node *v1.Node) {
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node.Spec.Taints = []v1.Taint{
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{
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Key: "hardware",
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Value: "gpu",
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Effect: v1.TaintEffectNoSchedule,
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},
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}
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})
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node4 := test.BuildTestNode("n4", 2000, 3000, 10, func(node *v1.Node) {
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node.ObjectMeta.Labels = map[string]string{
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"datacenter": "east",
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}
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})
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node5 := test.BuildTestNode("n5", 2000, 3000, 10, func(node *v1.Node) {
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node.Spec = v1.NodeSpec{
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Unschedulable: true,
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}
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})
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node6 := test.BuildTestNode("n6", 200, 200, 10, nil)
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// Three Pods in the "dev" Namespace, bound to same ReplicaSet. 2 should be evicted.
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ownerRef1 := test.GetReplicaSetOwnerRefList()
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p1 := test.BuildTestPod("p1", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.Namespace = "dev"
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pod.ObjectMeta.OwnerReferences = ownerRef1
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})
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p2 := test.BuildTestPod("p2", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.Namespace = "dev"
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pod.ObjectMeta.OwnerReferences = ownerRef1
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})
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p3 := test.BuildTestPod("p3", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.Namespace = "dev"
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pod.ObjectMeta.OwnerReferences = ownerRef1
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})
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// A DaemonSet.
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p4 := test.BuildTestPod("p4", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.ObjectMeta.OwnerReferences = test.GetDaemonSetOwnerRefList()
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})
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// A Pod with local storage.
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p5 := test.BuildTestPod("p5", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.ObjectMeta.OwnerReferences = test.GetNormalPodOwnerRefList()
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pod.Spec.Volumes = []v1.Volume{
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{
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Name: "sample",
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VolumeSource: v1.VolumeSource{
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HostPath: &v1.HostPathVolumeSource{Path: "somePath"},
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EmptyDir: &v1.EmptyDirVolumeSource{
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SizeLimit: resource.NewQuantity(int64(10), resource.BinarySI),
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},
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},
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},
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}
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})
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// A Mirror Pod.
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p6 := test.BuildTestPod("p6", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.Annotations = test.GetMirrorPodAnnotation()
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})
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// A Critical Pod.
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p7 := test.BuildTestPod("p7", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.Namespace = "kube-system"
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priority := utils.SystemCriticalPriority
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pod.Spec.Priority = &priority
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})
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// Three Pods in the "test" Namespace, bound to same ReplicaSet. 2 should be evicted.
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ownerRef2 := test.GetReplicaSetOwnerRefList()
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p8 := test.BuildTestPod("p8", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.Namespace = "test"
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pod.ObjectMeta.OwnerReferences = ownerRef2
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})
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p9 := test.BuildTestPod("p9", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.Namespace = "test"
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pod.ObjectMeta.OwnerReferences = ownerRef2
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})
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p10 := test.BuildTestPod("p10", 100, 0, node1.Name, func(pod *v1.Pod) {
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pod.Namespace = "test"
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pod.ObjectMeta.OwnerReferences = ownerRef2
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})
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p11 := test.BuildTestPod("p11", 100, 0, node1.Name, nil)
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p11.Namespace = "different-images"
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p12 := test.BuildTestPod("p12", 100, 0, node1.Name, nil)
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p12.Namespace = "different-images"
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p13 := test.BuildTestPod("p13", 100, 0, node1.Name, nil)
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p13.Namespace = "different-images"
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p14 := test.BuildTestPod("p14", 100, 0, node1.Name, nil)
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p14.Namespace = "different-images"
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p15 := test.BuildTestPod("p15", 100, 0, node1.Name, nil)
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p15.Namespace = "node-fit"
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p16 := test.BuildTestPod("NOT1", 100, 0, node1.Name, nil)
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p16.Namespace = "node-fit"
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p17 := test.BuildTestPod("NOT2", 100, 0, node1.Name, nil)
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p17.Namespace = "node-fit"
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p18 := test.BuildTestPod("TARGET", 100, 0, node1.Name, nil)
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p18.Namespace = "node-fit"
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// This pod sits on node6 and is used to take up CPU requests on the node
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p19 := test.BuildTestPod("CPU-eater", 150, 150, node6.Name, nil)
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p19.Namespace = "test"
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// Dummy pod for node6 used to do the opposite of p19
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p20 := test.BuildTestPod("CPU-saver", 100, 150, node6.Name, nil)
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p20.Namespace = "test"
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// ### Evictable Pods ###
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// ### Non-evictable Pods ###
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// Same owners, but different images
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p11.Spec.Containers[0].Image = "foo"
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p11.ObjectMeta.OwnerReferences = ownerRef1
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p12.Spec.Containers[0].Image = "bar"
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p12.ObjectMeta.OwnerReferences = ownerRef1
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// Multiple containers
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p13.ObjectMeta.OwnerReferences = ownerRef1
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p13.Spec.Containers = append(p13.Spec.Containers, v1.Container{
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Name: "foo",
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Image: "foo",
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})
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// ### Pods Evictable Based On Node Fit ###
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ownerRef3 := test.GetReplicaSetOwnerRefList()
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p15.ObjectMeta.OwnerReferences = ownerRef3
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p16.ObjectMeta.OwnerReferences = ownerRef3
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p17.ObjectMeta.OwnerReferences = ownerRef3
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p18.ObjectMeta.OwnerReferences = ownerRef3
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p15.Spec.NodeSelector = map[string]string{
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"datacenter": "west",
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}
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p16.Spec.NodeSelector = map[string]string{
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"datacenter": "west",
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}
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p17.Spec.NodeSelector = map[string]string{
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"datacenter": "west",
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}
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testCases := []struct {
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description string
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pods []*v1.Pod
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nodes []*v1.Node
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expectedEvictedPodCount uint
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excludeOwnerKinds []string
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nodefit bool
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}{
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{
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description: "Three pods in the `dev` Namespace, bound to same ReplicaSet. 1 should be evicted.",
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pods: []*v1.Pod{p1, p2, p3},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 1,
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},
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{
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description: "Three pods in the `dev` Namespace, bound to same ReplicaSet, but ReplicaSet kind is excluded. 0 should be evicted.",
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pods: []*v1.Pod{p1, p2, p3},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 0,
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excludeOwnerKinds: []string{"ReplicaSet"},
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},
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{
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description: "Three Pods in the `test` Namespace, bound to same ReplicaSet. 1 should be evicted.",
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pods: []*v1.Pod{p8, p9, p10},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 1,
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},
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{
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description: "Three Pods in the `dev` Namespace, three Pods in the `test` Namespace. Bound to ReplicaSet with same name. 4 should be evicted.",
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pods: []*v1.Pod{p1, p2, p3, p8, p9, p10},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 2,
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},
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{
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description: "Pods are: part of DaemonSet, with local storage, mirror pod annotation, critical pod annotation - none should be evicted.",
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pods: []*v1.Pod{p4, p5, p6, p7},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 0,
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},
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{
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description: "Test all Pods: 4 should be evicted.",
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pods: []*v1.Pod{p1, p2, p3, p4, p5, p6, p7, p8, p9, p10},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 2,
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},
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{
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description: "Pods with the same owner but different images should not be evicted",
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pods: []*v1.Pod{p11, p12},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 0,
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},
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{
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description: "Pods with multiple containers should not match themselves",
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pods: []*v1.Pod{p13},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 0,
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},
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{
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description: "Pods with matching ownerrefs and at not all matching image should not trigger an eviction",
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pods: []*v1.Pod{p11, p13},
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nodes: []*v1.Node{node1, node2},
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expectedEvictedPodCount: 0,
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},
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{
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description: "Three pods in the `dev` Namespace, bound to same ReplicaSet. Only node available has a taint, and nodeFit set to true. 0 should be evicted.",
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pods: []*v1.Pod{p1, p2, p3},
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nodes: []*v1.Node{node1, node3},
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expectedEvictedPodCount: 0,
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nodefit: true,
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},
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{
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description: "Three pods in the `node-fit` Namespace, bound to same ReplicaSet, all with a nodeSelector. Only node available has an incorrect node label, and nodeFit set to true. 0 should be evicted.",
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pods: []*v1.Pod{p15, p16, p17},
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nodes: []*v1.Node{node1, node4},
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expectedEvictedPodCount: 0,
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nodefit: true,
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},
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{
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description: "Three pods in the `node-fit` Namespace, bound to same ReplicaSet. Only node available is not schedulable, and nodeFit set to true. 0 should be evicted.",
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pods: []*v1.Pod{p1, p2, p3},
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nodes: []*v1.Node{node1, node5},
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expectedEvictedPodCount: 0,
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nodefit: true,
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},
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{
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description: "Three pods in the `node-fit` Namespace, bound to same ReplicaSet. Only node available does not have enough CPU, and nodeFit set to true. 0 should be evicted.",
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pods: []*v1.Pod{p1, p2, p3, p19},
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nodes: []*v1.Node{node1, node6},
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expectedEvictedPodCount: 0,
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nodefit: true,
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},
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{
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description: "Three pods in the `node-fit` Namespace, bound to same ReplicaSet. Only node available has enough CPU, and nodeFit set to true. 1 should be evicted.",
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pods: []*v1.Pod{p1, p2, p3, p20},
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nodes: []*v1.Node{node1, node6},
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expectedEvictedPodCount: 1,
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nodefit: true,
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},
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}
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for _, testCase := range testCases {
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t.Run(testCase.description, func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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var objs []runtime.Object
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for _, node := range testCase.nodes {
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objs = append(objs, node)
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}
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for _, pod := range testCase.pods {
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objs = append(objs, pod)
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}
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fakeClient := fake.NewSimpleClientset(objs...)
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handle, podEvictor, err := frameworktesting.InitFrameworkHandle(ctx, fakeClient, nil, defaultevictor.DefaultEvictorArgs{NodeFit: testCase.nodefit}, nil)
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if err != nil {
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t.Fatalf("Unable to initialize a framework handle: %v", err)
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}
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plugin, err := New(ctx, &RemoveDuplicatesArgs{
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ExcludeOwnerKinds: testCase.excludeOwnerKinds,
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},
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handle,
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)
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if err != nil {
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t.Fatalf("Unable to initialize the plugin: %v", err)
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}
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plugin.(frameworktypes.BalancePlugin).Balance(ctx, testCase.nodes)
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actualEvictedPodCount := podEvictor.TotalEvicted()
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if actualEvictedPodCount != testCase.expectedEvictedPodCount {
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t.Errorf("Test %#v failed, Unexpected no of pods evicted: pods evicted: %d, expected: %d", testCase.description, actualEvictedPodCount, testCase.expectedEvictedPodCount)
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}
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})
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}
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}
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func TestRemoveDuplicatesUniformly(t *testing.T) {
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setRSOwnerRef2 := func(pod *v1.Pod) {
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pod.ObjectMeta.OwnerReferences = []metav1.OwnerReference{
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{Kind: "ReplicaSet", APIVersion: "v1", Name: "replicaset-2"},
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}
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}
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setTwoRSOwnerRef := func(pod *v1.Pod) {
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pod.ObjectMeta.OwnerReferences = []metav1.OwnerReference{
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{Kind: "ReplicaSet", APIVersion: "v1", Name: "replicaset-1"},
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{Kind: "ReplicaSet", APIVersion: "v1", Name: "replicaset-2"},
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}
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}
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setTolerationsK1 := func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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pod.Spec.Tolerations = []v1.Toleration{
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{
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Key: "k1",
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Value: "v1",
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Operator: v1.TolerationOpEqual,
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Effect: v1.TaintEffectNoSchedule,
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},
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}
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}
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setTolerationsK2 := func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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pod.Spec.Tolerations = []v1.Toleration{
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{
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Key: "k2",
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Value: "v2",
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Operator: v1.TolerationOpEqual,
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Effect: v1.TaintEffectNoSchedule,
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},
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}
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}
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setMasterNoScheduleTaint := func(node *v1.Node) {
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node.Spec.Taints = []v1.Taint{
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{
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Effect: v1.TaintEffectNoSchedule,
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Key: "node-role.kubernetes.io/control-plane",
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},
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}
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}
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setMasterNoScheduleLabel := func(node *v1.Node) {
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if node.ObjectMeta.Labels == nil {
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node.ObjectMeta.Labels = map[string]string{}
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}
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node.ObjectMeta.Labels["node-role.kubernetes.io/control-plane"] = ""
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}
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setWorkerLabel := func(node *v1.Node) {
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if node.ObjectMeta.Labels == nil {
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node.ObjectMeta.Labels = map[string]string{}
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}
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node.ObjectMeta.Labels["node-role.kubernetes.io/worker"] = "k1"
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node.ObjectMeta.Labels["node-role.kubernetes.io/worker"] = "k2"
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}
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|
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setNotMasterNodeSelectorK1 := func(pod *v1.Pod) {
|
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test.SetRSOwnerRef(pod)
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pod.Spec.Affinity = &v1.Affinity{
|
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NodeAffinity: &v1.NodeAffinity{
|
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RequiredDuringSchedulingIgnoredDuringExecution: &v1.NodeSelector{
|
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NodeSelectorTerms: []v1.NodeSelectorTerm{
|
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{
|
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MatchExpressions: []v1.NodeSelectorRequirement{
|
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{
|
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Key: "node-role.kubernetes.io/control-plane",
|
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Operator: v1.NodeSelectorOpDoesNotExist,
|
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},
|
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{
|
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Key: "k1",
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Operator: v1.NodeSelectorOpDoesNotExist,
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},
|
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},
|
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},
|
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},
|
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},
|
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},
|
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}
|
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}
|
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|
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setNotMasterNodeSelectorK2 := func(pod *v1.Pod) {
|
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test.SetRSOwnerRef(pod)
|
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pod.Spec.Affinity = &v1.Affinity{
|
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NodeAffinity: &v1.NodeAffinity{
|
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RequiredDuringSchedulingIgnoredDuringExecution: &v1.NodeSelector{
|
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NodeSelectorTerms: []v1.NodeSelectorTerm{
|
|
{
|
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MatchExpressions: []v1.NodeSelectorRequirement{
|
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{
|
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Key: "node-role.kubernetes.io/control-plane",
|
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Operator: v1.NodeSelectorOpDoesNotExist,
|
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},
|
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{
|
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Key: "k2",
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Operator: v1.NodeSelectorOpDoesNotExist,
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},
|
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},
|
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},
|
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},
|
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},
|
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},
|
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}
|
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}
|
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|
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setWorkerLabelSelectorK1 := func(pod *v1.Pod) {
|
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test.SetRSOwnerRef(pod)
|
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if pod.Spec.NodeSelector == nil {
|
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pod.Spec.NodeSelector = map[string]string{}
|
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}
|
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pod.Spec.NodeSelector["node-role.kubernetes.io/worker"] = "k1"
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}
|
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|
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setWorkerLabelSelectorK2 := func(pod *v1.Pod) {
|
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test.SetRSOwnerRef(pod)
|
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if pod.Spec.NodeSelector == nil {
|
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pod.Spec.NodeSelector = map[string]string{}
|
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}
|
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pod.Spec.NodeSelector["node-role.kubernetes.io/worker"] = "k2"
|
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}
|
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|
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testCases := []struct {
|
|
description string
|
|
pods []*v1.Pod
|
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nodes []*v1.Node
|
|
expectedEvictedPodCount uint
|
|
}{
|
|
{
|
|
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),
|
|
},
|
|
},
|
|
{
|
|
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),
|
|
},
|
|
},
|
|
{
|
|
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),
|
|
},
|
|
},
|
|
{
|
|
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),
|
|
},
|
|
},
|
|
{
|
|
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),
|
|
},
|
|
},
|
|
{
|
|
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),
|
|
},
|
|
},
|
|
{
|
|
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),
|
|
},
|
|
},
|
|
{
|
|
description: "Evict pods uniformly respecting taints",
|
|
pods: []*v1.Pod{
|
|
// (5,3,1,0,0,0) -> (3,3,3,0,0,0) -> 2 evictions
|
|
test.BuildTestPod("p1", 100, 0, "worker1", setTolerationsK1),
|
|
test.BuildTestPod("p2", 100, 0, "worker1", setTolerationsK2),
|
|
test.BuildTestPod("p3", 100, 0, "worker1", setTolerationsK1),
|
|
test.BuildTestPod("p4", 100, 0, "worker1", setTolerationsK2),
|
|
test.BuildTestPod("p5", 100, 0, "worker1", setTolerationsK1),
|
|
test.BuildTestPod("p6", 100, 0, "worker2", setTolerationsK2),
|
|
test.BuildTestPod("p7", 100, 0, "worker2", setTolerationsK1),
|
|
test.BuildTestPod("p8", 100, 0, "worker2", setTolerationsK2),
|
|
test.BuildTestPod("p9", 100, 0, "worker3", setTolerationsK1),
|
|
},
|
|
expectedEvictedPodCount: 2,
|
|
nodes: []*v1.Node{
|
|
test.BuildTestNode("worker1", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("worker2", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("worker3", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("master1", 2000, 3000, 10, setMasterNoScheduleTaint),
|
|
test.BuildTestNode("master2", 2000, 3000, 10, setMasterNoScheduleTaint),
|
|
test.BuildTestNode("master3", 2000, 3000, 10, setMasterNoScheduleTaint),
|
|
},
|
|
},
|
|
{
|
|
description: "Evict pods uniformly respecting RequiredDuringSchedulingIgnoredDuringExecution node affinity",
|
|
pods: []*v1.Pod{
|
|
// (5,3,1,0,0,0) -> (3,3,3,0,0,0) -> 2 evictions
|
|
test.BuildTestPod("p1", 100, 0, "worker1", setNotMasterNodeSelectorK1),
|
|
test.BuildTestPod("p2", 100, 0, "worker1", setNotMasterNodeSelectorK2),
|
|
test.BuildTestPod("p3", 100, 0, "worker1", setNotMasterNodeSelectorK1),
|
|
test.BuildTestPod("p4", 100, 0, "worker1", setNotMasterNodeSelectorK2),
|
|
test.BuildTestPod("p5", 100, 0, "worker1", setNotMasterNodeSelectorK1),
|
|
test.BuildTestPod("p6", 100, 0, "worker2", setNotMasterNodeSelectorK2),
|
|
test.BuildTestPod("p7", 100, 0, "worker2", setNotMasterNodeSelectorK1),
|
|
test.BuildTestPod("p8", 100, 0, "worker2", setNotMasterNodeSelectorK2),
|
|
test.BuildTestPod("p9", 100, 0, "worker3", setNotMasterNodeSelectorK1),
|
|
},
|
|
expectedEvictedPodCount: 2,
|
|
nodes: []*v1.Node{
|
|
test.BuildTestNode("worker1", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("worker2", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("worker3", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("master1", 2000, 3000, 10, setMasterNoScheduleLabel),
|
|
test.BuildTestNode("master2", 2000, 3000, 10, setMasterNoScheduleLabel),
|
|
test.BuildTestNode("master3", 2000, 3000, 10, setMasterNoScheduleLabel),
|
|
},
|
|
},
|
|
{
|
|
description: "Evict pods uniformly respecting node selector",
|
|
pods: []*v1.Pod{
|
|
// (5,3,1,0,0,0) -> (3,3,3,0,0,0) -> 2 evictions
|
|
test.BuildTestPod("p1", 100, 0, "worker1", setWorkerLabelSelectorK1),
|
|
test.BuildTestPod("p2", 100, 0, "worker1", setWorkerLabelSelectorK2),
|
|
test.BuildTestPod("p3", 100, 0, "worker1", setWorkerLabelSelectorK1),
|
|
test.BuildTestPod("p4", 100, 0, "worker1", setWorkerLabelSelectorK2),
|
|
test.BuildTestPod("p5", 100, 0, "worker1", setWorkerLabelSelectorK1),
|
|
test.BuildTestPod("p6", 100, 0, "worker2", setWorkerLabelSelectorK2),
|
|
test.BuildTestPod("p7", 100, 0, "worker2", setWorkerLabelSelectorK1),
|
|
test.BuildTestPod("p8", 100, 0, "worker2", setWorkerLabelSelectorK2),
|
|
test.BuildTestPod("p9", 100, 0, "worker3", setWorkerLabelSelectorK1),
|
|
},
|
|
expectedEvictedPodCount: 2,
|
|
nodes: []*v1.Node{
|
|
test.BuildTestNode("worker1", 2000, 3000, 10, setWorkerLabel),
|
|
test.BuildTestNode("worker2", 2000, 3000, 10, setWorkerLabel),
|
|
test.BuildTestNode("worker3", 2000, 3000, 10, setWorkerLabel),
|
|
test.BuildTestNode("master1", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("master2", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("master3", 2000, 3000, 10, nil),
|
|
},
|
|
},
|
|
{
|
|
description: "Evict pods uniformly respecting node selector with zero target nodes",
|
|
pods: []*v1.Pod{
|
|
// (5,3,1,0,0,0) -> (3,3,3,0,0,0) -> 2 evictions
|
|
test.BuildTestPod("p1", 100, 0, "worker1", setWorkerLabelSelectorK1),
|
|
test.BuildTestPod("p2", 100, 0, "worker1", setWorkerLabelSelectorK2),
|
|
test.BuildTestPod("p3", 100, 0, "worker1", setWorkerLabelSelectorK1),
|
|
test.BuildTestPod("p4", 100, 0, "worker1", setWorkerLabelSelectorK2),
|
|
test.BuildTestPod("p5", 100, 0, "worker1", setWorkerLabelSelectorK1),
|
|
test.BuildTestPod("p6", 100, 0, "worker2", setWorkerLabelSelectorK2),
|
|
test.BuildTestPod("p7", 100, 0, "worker2", setWorkerLabelSelectorK1),
|
|
test.BuildTestPod("p8", 100, 0, "worker2", setWorkerLabelSelectorK2),
|
|
test.BuildTestPod("p9", 100, 0, "worker3", setWorkerLabelSelectorK1),
|
|
},
|
|
expectedEvictedPodCount: 0,
|
|
nodes: []*v1.Node{
|
|
test.BuildTestNode("worker1", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("worker2", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("worker3", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("master1", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("master2", 2000, 3000, 10, nil),
|
|
test.BuildTestNode("master3", 2000, 3000, 10, nil),
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, testCase := range testCases {
|
|
t.Run(testCase.description, func(t *testing.T) {
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
var objs []runtime.Object
|
|
for _, node := range testCase.nodes {
|
|
objs = append(objs, node)
|
|
}
|
|
for _, pod := range testCase.pods {
|
|
objs = append(objs, pod)
|
|
}
|
|
fakeClient := fake.NewSimpleClientset(objs...)
|
|
|
|
handle, podEvictor, err := frameworktesting.InitFrameworkHandle(ctx, fakeClient, nil, defaultevictor.DefaultEvictorArgs{}, nil)
|
|
if err != nil {
|
|
t.Fatalf("Unable to initialize a framework handle: %v", err)
|
|
}
|
|
|
|
plugin, err := New(ctx, &RemoveDuplicatesArgs{},
|
|
handle,
|
|
)
|
|
if err != nil {
|
|
t.Fatalf("Unable to initialize the plugin: %v", err)
|
|
}
|
|
|
|
plugin.(frameworktypes.BalancePlugin).Balance(ctx, testCase.nodes)
|
|
actualEvictedPodCount := podEvictor.TotalEvicted()
|
|
if actualEvictedPodCount != testCase.expectedEvictedPodCount {
|
|
t.Errorf("Test %#v failed, Unexpected no of pods evicted: pods evicted: %d, expected: %d", testCase.description, actualEvictedPodCount, testCase.expectedEvictedPodCount)
|
|
}
|
|
})
|
|
}
|
|
}
|