mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-28 14:41:10 +01:00
112 lines
3.9 KiB
Go
112 lines
3.9 KiB
Go
/*
|
|
Copyright 2017 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package strategies
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
"testing"
|
|
"github.com/aveshagarwal/rescheduler/test"
|
|
"github.com/aveshagarwal/rescheduler/pkg/api"
|
|
"k8s.io/apimachinery/pkg/api/resource"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
core "k8s.io/client-go/testing"
|
|
"k8s.io/kubernetes/pkg/api/v1"
|
|
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset/fake"
|
|
)
|
|
|
|
// TODO: Make this table driven.
|
|
func TestLowNodeUtilization(t *testing.T) {
|
|
var thresholds = make(api.ResourceThresholds)
|
|
var targetThresholds = make(api.ResourceThresholds)
|
|
thresholds[v1.ResourceCPU] = 30
|
|
thresholds[v1.ResourcePods] = 30
|
|
targetThresholds[v1.ResourceCPU] = 50
|
|
targetThresholds[v1.ResourcePods] = 50
|
|
|
|
n1 := test.BuildTestNode("n1", 4000, 3000, 9)
|
|
n2 := test.BuildTestNode("n2", 4000, 3000, 10)
|
|
p1 := test.BuildTestPod("p1", 400, 0, n1.Name)
|
|
p2 := test.BuildTestPod("p2", 400, 0, n1.Name)
|
|
p3 := test.BuildTestPod("p3", 400, 0, n1.Name)
|
|
p4 := test.BuildTestPod("p4", 400, 0, n1.Name)
|
|
p5 := test.BuildTestPod("p5", 400, 0, n1.Name)
|
|
|
|
// These won't be evicted.
|
|
p6 := test.BuildTestPod("p6", 400, 0, n1.Name)
|
|
p7 := test.BuildTestPod("p7", 400, 0, n1.Name)
|
|
p8 := test.BuildTestPod("p8", 400, 0, n1.Name)
|
|
|
|
p1.Annotations = test.GetReplicaSetAnnotation()
|
|
p2.Annotations = test.GetReplicaSetAnnotation()
|
|
p3.Annotations = test.GetReplicaSetAnnotation()
|
|
p4.Annotations = test.GetReplicaSetAnnotation()
|
|
p5.Annotations = test.GetReplicaSetAnnotation()
|
|
// The following 4 pods won't get evicted.
|
|
// A daemonset.
|
|
p6.Annotations = test.GetDaemonSetAnnotation()
|
|
// A pod with local storage.
|
|
p7.Annotations = test.GetNormalPodAnnotation()
|
|
p7.Spec.Volumes = []v1.Volume{
|
|
{
|
|
Name: "sample",
|
|
VolumeSource: v1.VolumeSource{
|
|
HostPath: &v1.HostPathVolumeSource{Path: "somePath"},
|
|
EmptyDir: &v1.EmptyDirVolumeSource{
|
|
SizeLimit: *resource.NewQuantity(int64(10), resource.BinarySI)},
|
|
},
|
|
},
|
|
}
|
|
// A Mirror Pod.
|
|
p7.Annotations = test.GetMirrorPodAnnotation()
|
|
// A Critical Pod.
|
|
p8.Namespace = "kube-system"
|
|
p8.Annotations = test.GetCriticalPodAnnotation()
|
|
p9 := test.BuildTestPod("p9", 400, 0, n1.Name)
|
|
p9.Annotations = test.GetReplicaSetAnnotation()
|
|
fakeClient := &fake.Clientset{}
|
|
fakeClient.Fake.AddReactor("list", "pods", func(action core.Action) (bool, runtime.Object, error) {
|
|
list := action.(core.ListAction)
|
|
fieldString := list.GetListRestrictions().Fields.String()
|
|
if strings.Contains(fieldString, "n1") {
|
|
return true, &v1.PodList{Items: []v1.Pod{*p1, *p2, *p3, *p4, *p5, *p6, *p7, *p8}}, nil
|
|
}
|
|
if strings.Contains(fieldString, "n2") {
|
|
return true, &v1.PodList{Items: []v1.Pod{*p9}}, nil
|
|
}
|
|
return true, nil, fmt.Errorf("Failed to list: %v", list)
|
|
})
|
|
fakeClient.Fake.AddReactor("get", "nodes", func(action core.Action) (bool, runtime.Object, error) {
|
|
getAction := action.(core.GetAction)
|
|
switch getAction.GetName() {
|
|
case n1.Name:
|
|
return true, n1, nil
|
|
case n2.Name:
|
|
return true, n2, nil
|
|
}
|
|
return true, nil, fmt.Errorf("Wrong node: %v", getAction.GetName())
|
|
})
|
|
expectedPodsEvicted := 4
|
|
npm := CreateNodePodsMap(fakeClient, []*v1.Node{n1, n2})
|
|
lowNodes, targetNodes, _ := classifyNodes(npm, thresholds, targetThresholds)
|
|
podsEvicted := evictPodsFromTargetNodes(fakeClient, "v1", targetNodes, lowNodes, targetThresholds)
|
|
if expectedPodsEvicted != podsEvicted {
|
|
t.Errorf("Expected %#v pods to be evicted but %#v got evicted", expectedPodsEvicted)
|
|
}
|
|
|
|
}
|