mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-25 20:59:28 +01:00
641 lines
22 KiB
Go
641 lines
22 KiB
Go
/*
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Copyright 2021 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 nodeutilization
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import (
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"context"
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"fmt"
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"testing"
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v1 "k8s.io/api/core/v1"
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policy "k8s.io/api/policy/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/client-go/kubernetes/fake"
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core "k8s.io/client-go/testing"
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"sigs.k8s.io/descheduler/pkg/api"
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"sigs.k8s.io/descheduler/pkg/descheduler/evictions"
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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 TestHighNodeUtilization(t *testing.T) {
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n1NodeName := "n1"
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n2NodeName := "n2"
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n3NodeName := "n3"
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nodeSelectorKey := "datacenter"
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nodeSelectorValue := "west"
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testCases := []struct {
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name string
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thresholds api.ResourceThresholds
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evictionModes []EvictionMode
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nodes []*v1.Node
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pods []*v1.Pod
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expectedPodsEvicted uint
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evictedPods []string
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}{
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{
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name: "no node below threshold usage",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 20,
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v1.ResourcePods: 20,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n3NodeName, 4000, 3000, 10, nil),
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},
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pods: []*v1.Pod{
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// These won't be evicted.
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test.BuildTestPod("p1", 400, 0, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p2", 400, 0, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p3", 400, 0, n1NodeName, test.SetRSOwnerRef),
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// These won't be evicted.
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test.BuildTestPod("p4", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p5", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p6", 400, 0, n2NodeName, test.SetRSOwnerRef),
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// These won't be evicted.
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test.BuildTestPod("p7", 400, 0, n3NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p8", 400, 0, n3NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p9", 400, 0, n3NodeName, test.SetRSOwnerRef),
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},
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expectedPodsEvicted: 0,
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},
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{
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name: "no evictable pods",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 40,
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v1.ResourcePods: 40,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 9, nil),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n3NodeName, 4000, 3000, 10, nil),
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},
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pods: []*v1.Pod{
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// These won't be evicted.
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test.BuildTestPod("p1", 400, 0, n1NodeName, func(pod *v1.Pod) {
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// A pod with local storage.
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test.SetNormalOwnerRef(pod)
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test.SetHostPathEmptyDirVolumeSource(pod)
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// A Mirror Pod.
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pod.Annotations = test.GetMirrorPodAnnotation()
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}),
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test.BuildTestPod("p2", 400, 0, n1NodeName, func(pod *v1.Pod) {
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// A Critical Pod.
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test.SetNormalOwnerRef(pod)
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pod.Namespace = "kube-system"
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test.SetPodPriority(pod, utils.SystemCriticalPriority)
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}),
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// These won't be evicted.
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test.BuildTestPod("p3", 400, 0, n2NodeName, test.SetDSOwnerRef),
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test.BuildTestPod("p4", 400, 0, n2NodeName, test.SetDSOwnerRef),
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test.BuildTestPod("p5", 400, 0, n3NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p6", 400, 0, n3NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p7", 400, 0, n3NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p8", 400, 0, n3NodeName, test.SetRSOwnerRef),
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},
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expectedPodsEvicted: 0,
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},
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{
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name: "no node to schedule evicted pods",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 20,
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v1.ResourcePods: 20,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n3NodeName, 4000, 3000, 10, test.SetNodeUnschedulable),
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},
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pods: []*v1.Pod{
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// These can't be evicted.
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test.BuildTestPod("p1", 400, 0, n1NodeName, test.SetRSOwnerRef),
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// These can't be evicted.
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test.BuildTestPod("p2", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p3", 400, 0, n3NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p4", 400, 0, n3NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p5", 400, 0, n3NodeName, test.SetRSOwnerRef),
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},
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expectedPodsEvicted: 0,
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},
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{
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name: "without priorities",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 30,
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v1.ResourcePods: 30,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n3NodeName, 4000, 3000, 10, test.SetNodeUnschedulable),
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},
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 400, 0, n1NodeName, test.SetRSOwnerRef),
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// These won't be evicted.
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test.BuildTestPod("p2", 400, 0, n1NodeName, func(pod *v1.Pod) {
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// A Critical Pod.
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test.SetNormalOwnerRef(pod)
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pod.Namespace = "kube-system"
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test.SetPodPriority(pod, utils.SystemCriticalPriority)
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}),
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// These won't be evicted.
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test.BuildTestPod("p3", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p4", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p5", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p6", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p7", 400, 0, n3NodeName, test.SetRSOwnerRef),
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},
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expectedPodsEvicted: 2,
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evictedPods: []string{"p1", "p7"},
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},
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{
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name: "without priorities stop when resource capacity is depleted",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 30,
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v1.ResourcePods: 30,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 2000, 3000, 10, nil),
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test.BuildTestNode(n2NodeName, 2000, 3000, 10, nil),
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test.BuildTestNode(n3NodeName, 2000, 3000, 10, test.SetNodeUnschedulable),
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},
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 400, 0, n1NodeName, test.SetRSOwnerRef),
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// These won't be evicted.
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test.BuildTestPod("p2", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p3", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p4", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p5", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p6", 400, 0, n3NodeName, test.SetRSOwnerRef),
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},
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expectedPodsEvicted: 1,
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},
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{
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name: "with priorities",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 30,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n2NodeName, 2000, 3000, 10, nil),
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test.BuildTestNode(n3NodeName, 2000, 3000, 10, test.SetNodeUnschedulable),
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},
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 400, 0, n1NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodPriority(pod, lowPriority)
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}),
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test.BuildTestPod("p2", 400, 0, n1NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodPriority(pod, highPriority)
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}),
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// These won't be evicted.
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test.BuildTestPod("p5", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p6", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p7", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p8", 400, 0, n2NodeName, test.SetRSOwnerRef),
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// These won't be evicted.
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test.BuildTestPod("p9", 400, 0, n3NodeName, test.SetDSOwnerRef),
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},
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expectedPodsEvicted: 1,
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evictedPods: []string{"p1"},
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},
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{
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name: "without priorities evicting best-effort pods only",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 30,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 3000, 3000, 10, nil),
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test.BuildTestNode(n2NodeName, 3000, 3000, 5, nil),
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test.BuildTestNode(n3NodeName, 3000, 3000, 10, test.SetNodeUnschedulable),
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},
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// All pods are assumed to be burstable (test.BuildTestNode always sets both cpu/memory resource requests to some value)
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 0, 0, n1NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.MakeBestEffortPod(pod)
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}),
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test.BuildTestPod("p2", 400, 0, n1NodeName, test.SetRSOwnerRef),
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// These won't be evicted.
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test.BuildTestPod("p3", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p4", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p5", 400, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p6", 400, 0, n2NodeName, test.SetRSOwnerRef),
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},
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expectedPodsEvicted: 1,
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evictedPods: []string{"p1"},
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},
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{
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name: "with extended resource",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 20,
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extendedResource: 40,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 10, func(node *v1.Node) {
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test.SetNodeExtendedResource(node, extendedResource, 8)
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}),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, func(node *v1.Node) {
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test.SetNodeExtendedResource(node, extendedResource, 8)
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}),
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test.BuildTestNode(n3NodeName, 4000, 3000, 10, test.SetNodeUnschedulable),
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},
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 100, 0, n1NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodExtendedResourceRequest(pod, extendedResource, 1)
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}),
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test.BuildTestPod("p2", 100, 0, n1NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodExtendedResourceRequest(pod, extendedResource, 1)
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}),
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// These won't be evicted
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test.BuildTestPod("p3", 500, 0, n2NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodExtendedResourceRequest(pod, extendedResource, 1)
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}),
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test.BuildTestPod("p4", 500, 0, n2NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodExtendedResourceRequest(pod, extendedResource, 1)
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}),
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test.BuildTestPod("p5", 500, 0, n2NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodExtendedResourceRequest(pod, extendedResource, 1)
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}),
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test.BuildTestPod("p6", 500, 0, n2NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodExtendedResourceRequest(pod, extendedResource, 1)
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}),
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},
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expectedPodsEvicted: 2,
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evictedPods: []string{"p1", "p2"},
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},
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{
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name: "with extended resource in some of nodes",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 40,
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extendedResource: 40,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 10, func(node *v1.Node) {
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test.SetNodeExtendedResource(node, extendedResource, 8)
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}),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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test.BuildTestNode(n3NodeName, 4000, 3000, 10, test.SetNodeUnschedulable),
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},
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pods: []*v1.Pod{
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// These won't be evicted
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test.BuildTestPod("p1", 100, 0, n1NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodExtendedResourceRequest(pod, extendedResource, 1)
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}),
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test.BuildTestPod("p2", 100, 0, n1NodeName, func(pod *v1.Pod) {
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test.SetRSOwnerRef(pod)
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test.SetPodExtendedResourceRequest(pod, extendedResource, 1)
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}),
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test.BuildTestPod("p3", 500, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p4", 500, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p5", 500, 0, n2NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p6", 500, 0, n2NodeName, test.SetRSOwnerRef),
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},
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expectedPodsEvicted: 0,
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},
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{
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name: "Other node match pod node selector",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 30,
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v1.ResourcePods: 30,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 9, func(node *v1.Node) {
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node.ObjectMeta.Labels = map[string]string{
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nodeSelectorKey: nodeSelectorValue,
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}
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}),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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},
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 400, 0, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p2", 400, 0, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p3", 400, 0, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p4", 400, 0, n1NodeName, test.SetDSOwnerRef),
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test.BuildTestPod("p5", 400, 0, n2NodeName, func(pod *v1.Pod) {
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// A pod selecting nodes in the "west" datacenter
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test.SetRSOwnerRef(pod)
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pod.Spec.NodeSelector = map[string]string{
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nodeSelectorKey: nodeSelectorValue,
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}
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}),
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},
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expectedPodsEvicted: 1,
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},
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{
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name: "Other node does not match pod node selector",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 30,
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v1.ResourcePods: 30,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 3000, 9, nil),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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},
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 400, 0, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p2", 400, 0, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p3", 400, 0, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p4", 400, 0, n1NodeName, test.SetDSOwnerRef),
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test.BuildTestPod("p5", 400, 0, n2NodeName, func(pod *v1.Pod) {
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// A pod selecting nodes in the "west" datacenter
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test.SetRSOwnerRef(pod)
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pod.Spec.NodeSelector = map[string]string{
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nodeSelectorKey: nodeSelectorValue,
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}
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}),
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},
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expectedPodsEvicted: 0,
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},
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{
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name: "Other node does not have enough Memory",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 30,
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v1.ResourcePods: 30,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 200, 9, nil),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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},
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 400, 50, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p2", 400, 50, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p3", 400, 50, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p4", 400, 50, n1NodeName, test.SetDSOwnerRef),
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test.BuildTestPod("p5", 400, 100, n2NodeName, func(pod *v1.Pod) {
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// A pod requesting more memory than is available on node1
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test.SetRSOwnerRef(pod)
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}),
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},
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expectedPodsEvicted: 0,
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},
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{
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name: "Other node does not have enough Memory",
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thresholds: api.ResourceThresholds{
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v1.ResourceCPU: 30,
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v1.ResourcePods: 30,
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},
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nodes: []*v1.Node{
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test.BuildTestNode(n1NodeName, 4000, 200, 9, nil),
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test.BuildTestNode(n2NodeName, 4000, 3000, 10, nil),
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},
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pods: []*v1.Pod{
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test.BuildTestPod("p1", 400, 50, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p2", 400, 50, n1NodeName, test.SetRSOwnerRef),
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test.BuildTestPod("p3", 400, 50, n1NodeName, test.SetRSOwnerRef),
|
|
test.BuildTestPod("p4", 400, 50, n1NodeName, test.SetDSOwnerRef),
|
|
test.BuildTestPod("p5", 400, 100, n2NodeName, func(pod *v1.Pod) {
|
|
// A pod requesting more memory than is available on node1
|
|
test.SetRSOwnerRef(pod)
|
|
}),
|
|
},
|
|
expectedPodsEvicted: 0,
|
|
},
|
|
{
|
|
name: "with extended resource threshold and no extended resource pods",
|
|
thresholds: api.ResourceThresholds{
|
|
extendedResource: 40,
|
|
},
|
|
evictionModes: []EvictionMode{EvictionModeOnlyThresholdingResources},
|
|
nodes: []*v1.Node{
|
|
test.BuildTestNode(n1NodeName, 4000, 3000, 10, func(node *v1.Node) {
|
|
test.SetNodeExtendedResource(node, extendedResource, 10)
|
|
}),
|
|
test.BuildTestNode(n2NodeName, 4000, 3000, 10, func(node *v1.Node) {
|
|
test.SetNodeExtendedResource(node, extendedResource, 10)
|
|
}),
|
|
test.BuildTestNode(n3NodeName, 4000, 3000, 10, func(node *v1.Node) {
|
|
test.SetNodeExtendedResource(node, extendedResource, 10)
|
|
}),
|
|
},
|
|
pods: []*v1.Pod{
|
|
// pods on node1 have the extended resource
|
|
// request set and they put the node in the
|
|
// over utilization range.
|
|
test.BuildTestPod("p1", 100, 0, n1NodeName, func(pod *v1.Pod) {
|
|
test.SetRSOwnerRef(pod)
|
|
test.SetPodExtendedResourceRequest(pod, extendedResource, 3)
|
|
}),
|
|
test.BuildTestPod("p2", 100, 0, n1NodeName, func(pod *v1.Pod) {
|
|
test.SetRSOwnerRef(pod)
|
|
test.SetPodExtendedResourceRequest(pod, extendedResource, 3)
|
|
}),
|
|
// pods in the other nodes must not be evicted
|
|
// because they do not have the extended
|
|
// resource defined in their requests.
|
|
test.BuildTestPod("p3", 500, 0, n2NodeName, test.SetRSOwnerRef),
|
|
test.BuildTestPod("p4", 500, 0, n2NodeName, func(pod *v1.Pod) {
|
|
test.SetRSOwnerRef(pod)
|
|
}),
|
|
test.BuildTestPod("p5", 500, 0, n2NodeName, func(pod *v1.Pod) {
|
|
test.SetRSOwnerRef(pod)
|
|
}),
|
|
test.BuildTestPod("p6", 500, 0, n2NodeName, func(pod *v1.Pod) {
|
|
test.SetRSOwnerRef(pod)
|
|
}),
|
|
},
|
|
expectedPodsEvicted: 0,
|
|
},
|
|
}
|
|
|
|
for _, testCase := range testCases {
|
|
t.Run(testCase.name, 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)
|
|
}
|
|
podsForEviction := make(map[string]struct{})
|
|
for _, pod := range testCase.evictedPods {
|
|
podsForEviction[pod] = struct{}{}
|
|
}
|
|
fakeClient := fake.NewSimpleClientset(objs...)
|
|
|
|
handle, podEvictor, err := frameworktesting.InitFrameworkHandle(ctx, fakeClient, nil, defaultevictor.DefaultEvictorArgs{NodeFit: true}, nil)
|
|
if err != nil {
|
|
t.Fatalf("Unable to initialize a framework handle: %v", err)
|
|
}
|
|
|
|
evictionFailed := false
|
|
if len(testCase.evictedPods) > 0 {
|
|
fakeClient.Fake.AddReactor("create", "pods", func(action core.Action) (bool, runtime.Object, error) {
|
|
getAction := action.(core.CreateAction)
|
|
obj := getAction.GetObject()
|
|
if eviction, ok := obj.(*policy.Eviction); ok {
|
|
if _, exists := podsForEviction[eviction.Name]; exists {
|
|
return true, obj, nil
|
|
}
|
|
evictionFailed = true
|
|
return true, nil, fmt.Errorf("pod %q was unexpectedly evicted", eviction.Name)
|
|
}
|
|
return true, obj, nil
|
|
})
|
|
}
|
|
|
|
plugin, err := NewHighNodeUtilization(
|
|
ctx,
|
|
&HighNodeUtilizationArgs{
|
|
Thresholds: testCase.thresholds,
|
|
EvictionModes: testCase.evictionModes,
|
|
},
|
|
handle,
|
|
)
|
|
if err != nil {
|
|
t.Fatalf("Unable to initialize the plugin: %v", err)
|
|
}
|
|
plugin.(frameworktypes.BalancePlugin).Balance(ctx, testCase.nodes)
|
|
|
|
podsEvicted := podEvictor.TotalEvicted()
|
|
if testCase.expectedPodsEvicted != podsEvicted {
|
|
t.Errorf("Expected %v pods to be evicted but %v got evicted", testCase.expectedPodsEvicted, podsEvicted)
|
|
}
|
|
if evictionFailed {
|
|
t.Errorf("Pod evictions failed unexpectedly")
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestHighNodeUtilizationWithTaints(t *testing.T) {
|
|
n1 := test.BuildTestNode("n1", 1000, 3000, 10, nil)
|
|
n2 := test.BuildTestNode("n2", 1000, 3000, 10, nil)
|
|
n3 := test.BuildTestNode("n3", 1000, 3000, 10, nil)
|
|
n3withTaints := n3.DeepCopy()
|
|
n3withTaints.Spec.Taints = []v1.Taint{
|
|
{
|
|
Key: "key",
|
|
Value: "value",
|
|
Effect: v1.TaintEffectNoSchedule,
|
|
},
|
|
}
|
|
|
|
podThatToleratesTaint := test.BuildTestPod("tolerate_pod", 200, 0, n1.Name, test.SetRSOwnerRef)
|
|
podThatToleratesTaint.Spec.Tolerations = []v1.Toleration{
|
|
{
|
|
Key: "key",
|
|
Value: "value",
|
|
},
|
|
}
|
|
|
|
tests := []struct {
|
|
name string
|
|
nodes []*v1.Node
|
|
pods []*v1.Pod
|
|
evictionsExpected uint
|
|
}{
|
|
{
|
|
name: "No taints",
|
|
nodes: []*v1.Node{n1, n2, n3},
|
|
pods: []*v1.Pod{
|
|
// Node 1 pods
|
|
test.BuildTestPod(fmt.Sprintf("pod_1_%s", n1.Name), 200, 0, n1.Name, test.SetRSOwnerRef),
|
|
test.BuildTestPod(fmt.Sprintf("pod_2_%s", n1.Name), 200, 0, n1.Name, test.SetRSOwnerRef),
|
|
test.BuildTestPod(fmt.Sprintf("pod_3_%s", n1.Name), 200, 0, n1.Name, test.SetRSOwnerRef),
|
|
// Node 2 pods
|
|
test.BuildTestPod(fmt.Sprintf("pod_4_%s", n2.Name), 200, 0, n2.Name, test.SetRSOwnerRef),
|
|
},
|
|
evictionsExpected: 1,
|
|
},
|
|
{
|
|
name: "No pod tolerates node taint",
|
|
nodes: []*v1.Node{n1, n3withTaints},
|
|
pods: []*v1.Pod{
|
|
// Node 1 pods
|
|
test.BuildTestPod(fmt.Sprintf("pod_1_%s", n1.Name), 200, 0, n1.Name, test.SetRSOwnerRef),
|
|
// Node 3 pods
|
|
test.BuildTestPod(fmt.Sprintf("pod_2_%s", n3withTaints.Name), 200, 0, n3withTaints.Name, test.SetRSOwnerRef),
|
|
},
|
|
evictionsExpected: 0,
|
|
},
|
|
{
|
|
name: "Pod which tolerates node taint",
|
|
nodes: []*v1.Node{n1, n3withTaints},
|
|
pods: []*v1.Pod{
|
|
// Node 1 pods
|
|
test.BuildTestPod(fmt.Sprintf("pod_1_%s", n1.Name), 100, 0, n1.Name, test.SetRSOwnerRef),
|
|
podThatToleratesTaint,
|
|
// Node 3 pods
|
|
test.BuildTestPod(fmt.Sprintf("pod_9_%s", n3withTaints.Name), 500, 0, n3withTaints.Name, test.SetRSOwnerRef),
|
|
},
|
|
evictionsExpected: 1,
|
|
},
|
|
}
|
|
|
|
for _, item := range tests {
|
|
t.Run(item.name, func(t *testing.T) {
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
var objs []runtime.Object
|
|
for _, node := range item.nodes {
|
|
objs = append(objs, node)
|
|
}
|
|
|
|
for _, pod := range item.pods {
|
|
objs = append(objs, pod)
|
|
}
|
|
|
|
fakeClient := fake.NewSimpleClientset(objs...)
|
|
|
|
handle, podEvictor, err := frameworktesting.InitFrameworkHandle(
|
|
ctx,
|
|
fakeClient,
|
|
evictions.NewOptions().WithMaxPodsToEvictPerNode(&item.evictionsExpected),
|
|
defaultevictor.DefaultEvictorArgs{},
|
|
nil,
|
|
)
|
|
if err != nil {
|
|
t.Fatalf("Unable to initialize a framework handle: %v", err)
|
|
}
|
|
|
|
plugin, err := NewHighNodeUtilization(ctx, &HighNodeUtilizationArgs{
|
|
Thresholds: api.ResourceThresholds{
|
|
v1.ResourceCPU: 40,
|
|
},
|
|
},
|
|
handle)
|
|
if err != nil {
|
|
t.Fatalf("Unable to initialize the plugin: %v", err)
|
|
}
|
|
plugin.(frameworktypes.BalancePlugin).Balance(ctx, item.nodes)
|
|
|
|
if item.evictionsExpected != podEvictor.TotalEvicted() {
|
|
t.Errorf("Expected %v evictions, got %v", item.evictionsExpected, podEvictor.TotalEvicted())
|
|
}
|
|
})
|
|
}
|
|
}
|