mirror of
https://github.com/kubernetes-sigs/descheduler.git
synced 2026-01-26 05:14:13 +01:00
396 lines
9.2 KiB
Go
396 lines
9.2 KiB
Go
/*
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Copyright 2017 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 node
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import (
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"testing"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/client-go/informers"
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"k8s.io/client-go/kubernetes/fake"
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"sigs.k8s.io/descheduler/test"
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)
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func TestReadyNodes(t *testing.T) {
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node1 := test.BuildTestNode("node2", 1000, 2000, 9, nil)
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node2 := test.BuildTestNode("node3", 1000, 2000, 9, nil)
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node2.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeMemoryPressure, Status: v1.ConditionTrue}}
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node3 := test.BuildTestNode("node4", 1000, 2000, 9, nil)
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node3.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeNetworkUnavailable, Status: v1.ConditionTrue}}
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node4 := test.BuildTestNode("node5", 1000, 2000, 9, nil)
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node4.Spec.Unschedulable = true
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node5 := test.BuildTestNode("node6", 1000, 2000, 9, nil)
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node5.Status.Conditions = []v1.NodeCondition{{Type: v1.NodeReady, Status: v1.ConditionFalse}}
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if !IsReady(node1) {
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t.Errorf("Expected %v to be ready", node2.Name)
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}
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if !IsReady(node2) {
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t.Errorf("Expected %v to be ready", node3.Name)
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}
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if !IsReady(node3) {
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t.Errorf("Expected %v to be ready", node4.Name)
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}
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if !IsReady(node4) {
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t.Errorf("Expected %v to be ready", node5.Name)
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}
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if IsReady(node5) {
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t.Errorf("Expected %v to be not ready", node5.Name)
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}
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}
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func TestReadyNodesWithNodeSelector(t *testing.T) {
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node1 := test.BuildTestNode("node1", 1000, 2000, 9, nil)
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node1.Labels = map[string]string{"type": "compute"}
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node2 := test.BuildTestNode("node2", 1000, 2000, 9, nil)
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node2.Labels = map[string]string{"type": "infra"}
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fakeClient := fake.NewSimpleClientset(node1, node2)
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nodeSelector := "type=compute"
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sharedInformerFactory := informers.NewSharedInformerFactory(fakeClient, 0)
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nodeInformer := sharedInformerFactory.Core().V1().Nodes()
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stopChannel := make(chan struct{}, 0)
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sharedInformerFactory.Start(stopChannel)
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sharedInformerFactory.WaitForCacheSync(stopChannel)
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defer close(stopChannel)
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nodes, _ := ReadyNodes(fakeClient, nodeInformer, nodeSelector, nil)
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if nodes[0].Name != "node1" {
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t.Errorf("Expected node1, got %s", nodes[0].Name)
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}
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}
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func TestIsNodeUnschedulable(t *testing.T) {
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tests := []struct {
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description string
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node *v1.Node
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IsUnSchedulable bool
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}{
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{
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description: "Node is expected to be schedulable",
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node: &v1.Node{
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Spec: v1.NodeSpec{Unschedulable: false},
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},
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IsUnSchedulable: false,
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},
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{
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description: "Node is not expected to be schedulable because of unschedulable field",
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node: &v1.Node{
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Spec: v1.NodeSpec{Unschedulable: true},
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},
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IsUnSchedulable: true,
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},
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}
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for _, test := range tests {
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actualUnSchedulable := IsNodeUnschedulable(test.node)
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if actualUnSchedulable != test.IsUnSchedulable {
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t.Errorf("Test %#v failed", test.description)
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}
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}
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}
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func TestPodFitsCurrentNode(t *testing.T) {
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nodeLabelKey := "kubernetes.io/desiredNode"
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nodeLabelValue := "yes"
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tests := []struct {
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description string
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pod *v1.Pod
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node *v1.Node
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success bool
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}{
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{
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description: "Pod with nodeAffinity set, expected to fit the node",
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pod: &v1.Pod{
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Spec: v1.PodSpec{
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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: nodeLabelKey,
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Operator: "In",
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Values: []string{
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nodeLabelValue,
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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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},
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: nodeLabelValue,
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},
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},
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},
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success: true,
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},
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{
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description: "Pod with nodeAffinity set, not expected to fit the node",
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pod: &v1.Pod{
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Spec: v1.PodSpec{
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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: nodeLabelKey,
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Operator: "In",
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Values: []string{
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nodeLabelValue,
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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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},
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node: &v1.Node{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: "no",
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},
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},
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},
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success: false,
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},
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}
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for _, tc := range tests {
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actual := PodFitsCurrentNode(tc.pod, tc.node)
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if actual != tc.success {
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t.Errorf("Test %#v failed", tc.description)
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}
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}
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}
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func TestPodFitsAnyNode(t *testing.T) {
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nodeLabelKey := "kubernetes.io/desiredNode"
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nodeLabelValue := "yes"
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tests := []struct {
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description string
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pod *v1.Pod
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nodes []*v1.Node
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success bool
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}{
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{
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description: "Pod expected to fit one of the nodes",
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pod: &v1.Pod{
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Spec: v1.PodSpec{
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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: nodeLabelKey,
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Operator: "In",
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Values: []string{
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nodeLabelValue,
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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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},
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nodes: []*v1.Node{
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{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: nodeLabelValue,
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},
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: "no",
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},
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},
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},
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},
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success: true,
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},
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{
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description: "Pod expected to fit one of the nodes (error node first)",
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pod: &v1.Pod{
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Spec: v1.PodSpec{
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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: nodeLabelKey,
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Operator: "In",
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Values: []string{
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nodeLabelValue,
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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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},
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nodes: []*v1.Node{
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{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: "no",
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},
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: nodeLabelValue,
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},
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},
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},
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},
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success: true,
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},
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{
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description: "Pod expected to fit none of the nodes",
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pod: &v1.Pod{
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Spec: v1.PodSpec{
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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: nodeLabelKey,
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Operator: "In",
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Values: []string{
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nodeLabelValue,
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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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},
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nodes: []*v1.Node{
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{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: "unfit1",
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},
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: "unfit2",
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},
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},
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},
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},
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success: false,
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},
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{
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description: "Nodes are unschedulable but labels match, should fail",
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pod: &v1.Pod{
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Spec: v1.PodSpec{
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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: nodeLabelKey,
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Operator: "In",
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Values: []string{
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nodeLabelValue,
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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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},
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nodes: []*v1.Node{
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{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: nodeLabelValue,
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},
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},
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Spec: v1.NodeSpec{
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Unschedulable: true,
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},
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},
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{
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ObjectMeta: metav1.ObjectMeta{
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Labels: map[string]string{
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nodeLabelKey: "no",
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},
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},
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},
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},
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success: false,
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},
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}
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for _, tc := range tests {
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actual := PodFitsAnyNode(tc.pod, tc.nodes)
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if actual != tc.success {
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t.Errorf("Test %#v failed", tc.description)
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}
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}
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}
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