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1471 lines
49 KiB
Go
1471 lines
49 KiB
Go
/*
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Copyright 2015 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 e2e
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import (
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"fmt"
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"time"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/api/errors"
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"k8s.io/kubernetes/pkg/api/resource"
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"k8s.io/kubernetes/pkg/api/unversioned"
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client "k8s.io/kubernetes/pkg/client/unversioned"
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"k8s.io/kubernetes/pkg/util/sets"
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"k8s.io/kubernetes/pkg/util/uuid"
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"k8s.io/kubernetes/test/e2e/framework"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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_ "github.com/stretchr/testify/assert"
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)
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const maxNumberOfPods int64 = 10
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const minPodCPURequest int64 = 500
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// variable set in BeforeEach, never modified afterwards
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var masterNodes sets.String
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var podWithNodeAffinity = api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "with-labels",
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Annotations: map[string]string{
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"scheduler.alpha.kubernetes.io/affinity": `{
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"nodeAffinity": {
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"requiredDuringSchedulingIgnoredDuringExecution": {
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"nodeSelectorTerms": [{
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"matchExpressions": [{
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"key": "kubernetes.io/e2e-az-name",
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"operator": "In",
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"values": ["e2e-az1", "e2e-az2"]
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}]
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}]
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}
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}
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}`,
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"another-annotation-key": "another-annotation-value",
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},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "with-labels",
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Image: "gcr.io/google_containers/pause:2.0",
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},
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},
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},
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}
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var podWithPodAffinity = api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "with-newlabels",
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Annotations: map[string]string{
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"scheduler.alpha.kubernetes.io/affinity": `{
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"podAffinity": {
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"requiredDuringSchedulingIgnoredDuringExecution": [{
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"labelSelector": {
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"matchExpressions": [{
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"key": "security",
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"operator": "In",
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"values":["S1"]
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}]
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},
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"topologyKey": "kubernetes.io/hostname"
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}]
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},
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"podAntiAffinity": {
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"requiredDuringSchedulingIgnoredDuringExecution": [{
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"labelSelector": {
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"matchExpressions": [{
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"key": "security",
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"operator": "In",
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"values":["S2"]
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}]
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},
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"topologyKey": "kubernetes.io/hostname"
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}]
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}
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}`,
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"another-annotation-key": "another-annotation-value",
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},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "with-newlabels",
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Image: "gcr.io/google_containers/pause:2.0",
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},
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},
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},
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}
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// Returns a number of currently scheduled and not scheduled Pods.
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func getPodsScheduled(pods *api.PodList) (scheduledPods, notScheduledPods []api.Pod) {
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for _, pod := range pods.Items {
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if !masterNodes.Has(pod.Spec.NodeName) {
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if pod.Spec.NodeName != "" {
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_, scheduledCondition := api.GetPodCondition(&pod.Status, api.PodScheduled)
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Expect(scheduledCondition != nil).To(Equal(true))
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Expect(scheduledCondition.Status).To(Equal(api.ConditionTrue))
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scheduledPods = append(scheduledPods, pod)
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} else {
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_, scheduledCondition := api.GetPodCondition(&pod.Status, api.PodScheduled)
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Expect(scheduledCondition != nil).To(Equal(true))
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Expect(scheduledCondition.Status).To(Equal(api.ConditionFalse))
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if scheduledCondition.Reason == "Unschedulable" {
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notScheduledPods = append(notScheduledPods, pod)
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}
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}
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}
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}
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return
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}
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func getRequestedCPU(pod api.Pod) int64 {
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var result int64
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for _, container := range pod.Spec.Containers {
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result += container.Resources.Requests.Cpu().MilliValue()
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}
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return result
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}
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// TODO: upgrade calls in PodAffinity tests when we're able to run them
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func verifyResult(c *client.Client, podName string, expectedScheduled int, expectedNotScheduled int, ns string) {
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allPods, err := c.Pods(ns).List(api.ListOptions{})
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framework.ExpectNoError(err)
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scheduledPods, notScheduledPods := framework.GetPodsScheduled(masterNodes, allPods)
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printed := false
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printOnce := func(msg string) string {
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if !printed {
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printed = true
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return msg
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} else {
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return ""
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}
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}
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Expect(len(notScheduledPods)).To(Equal(expectedNotScheduled), printOnce(fmt.Sprintf("Not scheduled Pods: %#v", notScheduledPods)))
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Expect(len(scheduledPods)).To(Equal(expectedScheduled), printOnce(fmt.Sprintf("Scheduled Pods: %#v", scheduledPods)))
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}
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func cleanupPods(c *client.Client, ns string) {
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By("Removing all pods in namespace " + ns)
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pods, err := c.Pods(ns).List(api.ListOptions{})
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framework.ExpectNoError(err)
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opt := api.NewDeleteOptions(0)
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for _, p := range pods.Items {
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framework.ExpectNoError(c.Pods(ns).Delete(p.ObjectMeta.Name, opt))
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}
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}
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var _ = framework.KubeDescribe("SchedulerPredicates [Serial]", func() {
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var c *client.Client
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var nodeList *api.NodeList
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var systemPodsNo int
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var totalPodCapacity int64
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var RCName string
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var ns string
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ignoreLabels := framework.ImagePullerLabels
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AfterEach(func() {
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rc, err := c.ReplicationControllers(ns).Get(RCName)
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if err == nil && rc.Spec.Replicas != 0 {
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By("Cleaning up the replication controller")
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err := framework.DeleteRC(c, ns, RCName)
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framework.ExpectNoError(err)
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}
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})
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f := framework.NewDefaultFramework("sched-pred")
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BeforeEach(func() {
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c = f.Client
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ns = f.Namespace.Name
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nodeList = &api.NodeList{}
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masterNodes, nodeList = framework.GetMasterAndWorkerNodesOrDie(c)
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err := framework.CheckTestingNSDeletedExcept(c, ns)
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framework.ExpectNoError(err)
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// Every test case in this suite assumes that cluster add-on pods stay stable and
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// cannot be run in parallel with any other test that touches Nodes or Pods.
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// It is so because we need to have precise control on what's running in the cluster.
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systemPods, err := framework.GetPodsInNamespace(c, ns, ignoreLabels)
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Expect(err).NotTo(HaveOccurred())
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systemPodsNo = 0
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for _, pod := range systemPods {
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if !masterNodes.Has(pod.Spec.NodeName) && pod.DeletionTimestamp == nil {
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systemPodsNo++
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}
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}
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err = framework.WaitForPodsRunningReady(c, api.NamespaceSystem, int32(systemPodsNo), framework.PodReadyBeforeTimeout, ignoreLabels)
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Expect(err).NotTo(HaveOccurred())
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for _, node := range nodeList.Items {
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framework.Logf("\nLogging pods the kubelet thinks is on node %v before test", node.Name)
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framework.PrintAllKubeletPods(c, node.Name)
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}
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})
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// This test verifies that max-pods flag works as advertised. It assumes that cluster add-on pods stay stable
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// and cannot be run in parallel with any other test that touches Nodes or Pods. It is so because to check
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// if max-pods is working we need to fully saturate the cluster and keep it in this state for few seconds.
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//
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// Slow PR #13315 (8 min)
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It("validates MaxPods limit number of pods that are allowed to run [Slow]", func() {
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totalPodCapacity = 0
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for _, node := range nodeList.Items {
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framework.Logf("Node: %v", node)
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podCapacity, found := node.Status.Capacity["pods"]
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Expect(found).To(Equal(true))
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totalPodCapacity += podCapacity.Value()
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}
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currentlyScheduledPods := framework.WaitForStableCluster(c, masterNodes)
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podsNeededForSaturation := int(totalPodCapacity) - currentlyScheduledPods
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By(fmt.Sprintf("Starting additional %v Pods to fully saturate the cluster max pods and trying to start another one", podsNeededForSaturation))
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// As the pods are distributed randomly among nodes,
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// it can easily happen that all nodes are satured
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// and there is no need to create additional pods.
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// StartPods requires at least one pod to replicate.
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if podsNeededForSaturation > 0 {
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framework.StartPods(c, podsNeededForSaturation, ns, "maxp", api.Pod{
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TypeMeta: unversioned.TypeMeta{
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Kind: "Pod",
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},
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ObjectMeta: api.ObjectMeta{
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Name: "",
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Labels: map[string]string{"name": ""},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "",
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Image: framework.GetPauseImageName(f.Client),
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},
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},
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},
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}, true)
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}
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podName := "additional-pod"
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_, err := c.Pods(ns).Create(&api.Pod{
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TypeMeta: unversioned.TypeMeta{
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Kind: "Pod",
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},
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ObjectMeta: api.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"name": "additional"},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: podName,
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Image: framework.GetPauseImageName(f.Client),
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},
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},
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},
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})
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framework.ExpectNoError(err)
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// Wait a bit to allow scheduler to do its thing
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// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
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framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
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time.Sleep(10 * time.Second)
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verifyResult(c, podName, podsNeededForSaturation, 1, ns)
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})
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// This test verifies we don't allow scheduling of pods in a way that sum of limits of pods is greater than machines capacity.
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// It assumes that cluster add-on pods stay stable and cannot be run in parallel with any other test that touches Nodes or Pods.
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// It is so because we need to have precise control on what's running in the cluster.
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It("validates resource limits of pods that are allowed to run [Conformance]", func() {
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nodeMaxCapacity := int64(0)
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nodeToCapacityMap := make(map[string]int64)
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for _, node := range nodeList.Items {
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capacity, found := node.Status.Capacity["cpu"]
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Expect(found).To(Equal(true))
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nodeToCapacityMap[node.Name] = capacity.MilliValue()
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if nodeMaxCapacity < capacity.MilliValue() {
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nodeMaxCapacity = capacity.MilliValue()
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}
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}
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framework.WaitForStableCluster(c, masterNodes)
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pods, err := c.Pods(api.NamespaceAll).List(api.ListOptions{})
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framework.ExpectNoError(err)
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for _, pod := range pods.Items {
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_, found := nodeToCapacityMap[pod.Spec.NodeName]
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if found && pod.Status.Phase != api.PodSucceeded && pod.Status.Phase != api.PodFailed {
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framework.Logf("Pod %v requesting resource cpu=%vm on Node %v", pod.Name, getRequestedCPU(pod), pod.Spec.NodeName)
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nodeToCapacityMap[pod.Spec.NodeName] -= getRequestedCPU(pod)
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}
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}
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var podsNeededForSaturation int
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milliCpuPerPod := nodeMaxCapacity / maxNumberOfPods
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if milliCpuPerPod < minPodCPURequest {
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milliCpuPerPod = minPodCPURequest
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}
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framework.Logf("Using pod capacity: %vm", milliCpuPerPod)
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for name, leftCapacity := range nodeToCapacityMap {
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framework.Logf("Node: %v has cpu capacity: %vm", name, leftCapacity)
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podsNeededForSaturation += (int)(leftCapacity / milliCpuPerPod)
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}
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By(fmt.Sprintf("Starting additional %v Pods to fully saturate the cluster CPU and trying to start another one", podsNeededForSaturation))
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// As the pods are distributed randomly among nodes,
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// it can easily happen that all nodes are saturated
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// and there is no need to create additional pods.
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// StartPods requires at least one pod to replicate.
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if podsNeededForSaturation > 0 {
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framework.StartPods(c, podsNeededForSaturation, ns, "overcommit", api.Pod{
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TypeMeta: unversioned.TypeMeta{
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Kind: "Pod",
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},
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ObjectMeta: api.ObjectMeta{
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Name: "",
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Labels: map[string]string{"name": ""},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: "",
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Image: framework.GetPauseImageName(f.Client),
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Resources: api.ResourceRequirements{
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Limits: api.ResourceList{
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"cpu": *resource.NewMilliQuantity(milliCpuPerPod, "DecimalSI"),
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},
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Requests: api.ResourceList{
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"cpu": *resource.NewMilliQuantity(milliCpuPerPod, "DecimalSI"),
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},
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},
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},
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},
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},
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}, true)
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}
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podName := "additional-pod"
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_, err = c.Pods(ns).Create(&api.Pod{
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TypeMeta: unversioned.TypeMeta{
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Kind: "Pod",
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},
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ObjectMeta: api.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"name": "additional"},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: podName,
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Image: framework.GetPauseImageName(f.Client),
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Resources: api.ResourceRequirements{
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Limits: api.ResourceList{
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"cpu": *resource.NewMilliQuantity(milliCpuPerPod, "DecimalSI"),
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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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framework.ExpectNoError(err)
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// Wait a bit to allow scheduler to do its thing
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// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
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framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
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time.Sleep(10 * time.Second)
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verifyResult(c, podName, podsNeededForSaturation, 1, ns)
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})
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// Test Nodes does not have any label, hence it should be impossible to schedule Pod with
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// nonempty Selector set.
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It("validates that NodeSelector is respected if not matching [Conformance]", func() {
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By("Trying to schedule Pod with nonempty NodeSelector.")
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podName := "restricted-pod"
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framework.WaitForStableCluster(c, masterNodes)
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_, err := c.Pods(ns).Create(&api.Pod{
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TypeMeta: unversioned.TypeMeta{
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Kind: "Pod",
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},
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ObjectMeta: api.ObjectMeta{
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Name: podName,
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Labels: map[string]string{"name": "restricted"},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: podName,
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Image: framework.GetPauseImageName(f.Client),
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},
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},
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NodeSelector: map[string]string{
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"label": "nonempty",
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},
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},
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})
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framework.ExpectNoError(err)
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// Wait a bit to allow scheduler to do its thing
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// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
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framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
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time.Sleep(10 * time.Second)
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verifyResult(c, podName, 0, 1, ns)
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})
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It("validates that a pod with an invalid NodeAffinity is rejected", func() {
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By("Trying to launch a pod with an invalid Affinity data.")
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podName := "without-label"
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_, err := c.Pods(ns).Create(&api.Pod{
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TypeMeta: unversioned.TypeMeta{
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Kind: "Pod",
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},
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ObjectMeta: api.ObjectMeta{
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Name: podName,
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Annotations: map[string]string{
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api.AffinityAnnotationKey: `
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{"nodeAffinity": {
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"requiredDuringSchedulingIgnoredDuringExecution": {
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"nodeSelectorTerms": [{
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"matchExpressions": []
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}]
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},
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}}`,
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},
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: podName,
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Image: framework.GetPauseImageName(f.Client),
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},
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},
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},
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})
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if err == nil || !errors.IsInvalid(err) {
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framework.Failf("Expect error of invalid, got : %v", err)
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}
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// Wait a bit to allow scheduler to do its thing if the pod is not rejected.
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// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
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framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
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time.Sleep(10 * time.Second)
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})
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It("validates that NodeSelector is respected if matching [Conformance]", func() {
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// launch a pod to find a node which can launch a pod. We intentionally do
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// not just take the node list and choose the first of them. Depending on the
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// cluster and the scheduler it might be that a "normal" pod cannot be
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// scheduled onto it.
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By("Trying to launch a pod without a label to get a node which can launch it.")
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podName := "without-label"
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pod, err := c.Pods(ns).Create(&api.Pod{
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TypeMeta: unversioned.TypeMeta{
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Kind: "Pod",
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},
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ObjectMeta: api.ObjectMeta{
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Name: podName,
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},
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Spec: api.PodSpec{
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Containers: []api.Container{
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{
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Name: podName,
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Image: framework.GetPauseImageName(f.Client),
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},
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},
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},
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})
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framework.ExpectNoError(err)
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framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
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pod, err = c.Pods(ns).Get(podName)
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framework.ExpectNoError(err)
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|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Explicitly delete pod here to free the resource it takes.")
|
|
err = c.Pods(ns).Delete(podName, api.NewDeleteOptions(0))
|
|
framework.ExpectNoError(err)
|
|
|
|
By("Trying to apply a random label on the found node.")
|
|
k := fmt.Sprintf("kubernetes.io/e2e-%s", string(uuid.NewUUID()))
|
|
v := "42"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, k, v)
|
|
framework.ExpectNodeHasLabel(c, nodeName, k, v)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, k)
|
|
|
|
By("Trying to relaunch the pod, now with labels.")
|
|
labelPodName := "with-labels"
|
|
pod, err = c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: labelPodName,
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: labelPodName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
NodeSelector: map[string]string{
|
|
"kubernetes.io/hostname": nodeName,
|
|
k: v,
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
|
|
// check that pod got scheduled. We intentionally DO NOT check that the
|
|
// pod is running because this will create a race condition with the
|
|
// kubelet and the scheduler: the scheduler might have scheduled a pod
|
|
// already when the kubelet does not know about its new label yet. The
|
|
// kubelet will then refuse to launch the pod.
|
|
framework.ExpectNoError(framework.WaitForPodNotPending(c, ns, labelPodName, pod.ResourceVersion))
|
|
labelPod, err := c.Pods(ns).Get(labelPodName)
|
|
framework.ExpectNoError(err)
|
|
Expect(labelPod.Spec.NodeName).To(Equal(nodeName))
|
|
})
|
|
|
|
// Test Nodes does not have any label, hence it should be impossible to schedule Pod with
|
|
// non-nil NodeAffinity.RequiredDuringSchedulingIgnoredDuringExecution.
|
|
It("validates that NodeAffinity is respected if not matching", func() {
|
|
By("Trying to schedule Pod with nonempty NodeSelector.")
|
|
podName := "restricted-pod"
|
|
|
|
framework.WaitForStableCluster(c, masterNodes)
|
|
|
|
_, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
Labels: map[string]string{"name": "restricted"},
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/affinity": `
|
|
{"nodeAffinity": { "requiredDuringSchedulingIgnoredDuringExecution": {
|
|
"nodeSelectorTerms": [
|
|
{
|
|
"matchExpressions": [{
|
|
"key": "foo",
|
|
"operator": "In",
|
|
"values": ["bar", "value2"]
|
|
}]
|
|
},
|
|
{
|
|
"matchExpressions": [{
|
|
"key": "diffkey",
|
|
"operator": "In",
|
|
"values": ["wrong", "value2"]
|
|
}]
|
|
}
|
|
]
|
|
}}}`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
// Wait a bit to allow scheduler to do its thing
|
|
// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
|
|
framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
|
|
time.Sleep(10 * time.Second)
|
|
|
|
verifyResult(c, podName, 0, 1, ns)
|
|
})
|
|
|
|
// Keep the same steps with the test on NodeSelector,
|
|
// but specify Affinity in Pod.Annotations, instead of NodeSelector.
|
|
It("validates that required NodeAffinity setting is respected if matching", func() {
|
|
// launch a pod to find a node which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first of them. Depending on the
|
|
// cluster and the scheduler it might be that a "normal" pod cannot be
|
|
// scheduled onto it.
|
|
By("Trying to launch a pod without a label to get a node which can launch it.")
|
|
podName := "without-label"
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Explicitly delete pod here to free the resource it takes.")
|
|
err = c.Pods(ns).Delete(podName, api.NewDeleteOptions(0))
|
|
framework.ExpectNoError(err)
|
|
|
|
By("Trying to apply a random label on the found node.")
|
|
k := fmt.Sprintf("kubernetes.io/e2e-%s", string(uuid.NewUUID()))
|
|
v := "42"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, k, v)
|
|
framework.ExpectNodeHasLabel(c, nodeName, k, v)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, k)
|
|
|
|
By("Trying to relaunch the pod, now with labels.")
|
|
labelPodName := "with-labels"
|
|
pod, err = c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: labelPodName,
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/affinity": `
|
|
{"nodeAffinity": { "requiredDuringSchedulingIgnoredDuringExecution": {
|
|
"nodeSelectorTerms": [
|
|
{
|
|
"matchExpressions": [{
|
|
"key": "kubernetes.io/hostname",
|
|
"operator": "In",
|
|
"values": ["` + nodeName + `"]
|
|
},{
|
|
"key": "` + k + `",
|
|
"operator": "In",
|
|
"values": ["` + v + `"]
|
|
}]
|
|
}
|
|
]
|
|
}}}`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: labelPodName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
|
|
// check that pod got scheduled. We intentionally DO NOT check that the
|
|
// pod is running because this will create a race condition with the
|
|
// kubelet and the scheduler: the scheduler might have scheduled a pod
|
|
// already when the kubelet does not know about its new label yet. The
|
|
// kubelet will then refuse to launch the pod.
|
|
framework.ExpectNoError(framework.WaitForPodNotPending(c, ns, labelPodName, pod.ResourceVersion))
|
|
labelPod, err := c.Pods(ns).Get(labelPodName)
|
|
framework.ExpectNoError(err)
|
|
Expect(labelPod.Spec.NodeName).To(Equal(nodeName))
|
|
})
|
|
|
|
// Verify that an escaped JSON string of NodeAffinity in a YAML PodSpec works.
|
|
It("validates that embedding the JSON NodeAffinity setting as a string in the annotation value work", func() {
|
|
// launch a pod to find a node which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first of them. Depending on the
|
|
// cluster and the scheduler it might be that a "normal" pod cannot be
|
|
// scheduled onto it.
|
|
By("Trying to launch a pod without a label to get a node which can launch it.")
|
|
podName := "without-label"
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Explicitly delete pod here to free the resource it takes.")
|
|
err = c.Pods(ns).Delete(podName, api.NewDeleteOptions(0))
|
|
framework.ExpectNoError(err)
|
|
|
|
By("Trying to apply a label with fake az info on the found node.")
|
|
k := "kubernetes.io/e2e-az-name"
|
|
v := "e2e-az1"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, k, v)
|
|
framework.ExpectNodeHasLabel(c, nodeName, k, v)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, k)
|
|
|
|
By("Trying to launch a pod that with NodeAffinity setting as embedded JSON string in the annotation value.")
|
|
labelPodName := podWithNodeAffinity.Name
|
|
pod, err = c.Pods(ns).Create(&podWithNodeAffinity)
|
|
framework.ExpectNoError(err)
|
|
|
|
// check that pod got scheduled. We intentionally DO NOT check that the
|
|
// pod is running because this will create a race condition with the
|
|
// kubelet and the scheduler: the scheduler might have scheduled a pod
|
|
// already when the kubelet does not know about its new label yet. The
|
|
// kubelet will then refuse to launch the pod.
|
|
framework.ExpectNoError(framework.WaitForPodNotPending(c, ns, labelPodName, ""))
|
|
labelPod, err := c.Pods(ns).Get(labelPodName)
|
|
framework.ExpectNoError(err)
|
|
Expect(labelPod.Spec.NodeName).To(Equal(nodeName))
|
|
})
|
|
|
|
// labelSelector Operator is DoesNotExist but values are there in requiredDuringSchedulingIgnoredDuringExecution
|
|
// part of podAffinity,so validation fails.
|
|
It("validates that a pod with an invalid podAffinity is rejected because of the LabelSelectorRequirement is invalid", func() {
|
|
By("Trying to launch a pod with an invalid pod Affinity data.")
|
|
podName := "without-label-" + string(uuid.NewUUID())
|
|
_, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
Labels: map[string]string{"name": "without-label"},
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/affinity": `
|
|
{"podAffinity": {
|
|
"requiredDuringSchedulingIgnoredDuringExecution": [{
|
|
"weight": 0,
|
|
"podAffinityTerm": {
|
|
"labelSelector": {
|
|
"matchExpressions": [{
|
|
"key": "service",
|
|
"operator": "DoesNotExist",
|
|
"values":["securityscan"]
|
|
}]
|
|
},
|
|
"namespaces": [],
|
|
"topologyKey": "kubernetes.io/hostname"
|
|
}
|
|
}]
|
|
}}`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
|
|
if err == nil || !errors.IsInvalid(err) {
|
|
framework.Failf("Expect error of invalid, got : %v", err)
|
|
}
|
|
|
|
// Wait a bit to allow scheduler to do its thing if the pod is not rejected.
|
|
// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
|
|
framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
|
|
time.Sleep(10 * time.Second)
|
|
})
|
|
|
|
// Test Nodes does not have any pod, hence it should be impossible to schedule a Pod with pod affinity.
|
|
It("validates that Inter-pod-Affinity is respected if not matching", func() {
|
|
By("Trying to schedule Pod with nonempty Pod Affinity.")
|
|
podName := "without-label-" + string(uuid.NewUUID())
|
|
|
|
framework.WaitForStableCluster(c, masterNodes)
|
|
|
|
_, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/affinity": `
|
|
{"podAffinity": {
|
|
"requiredDuringSchedulingIgnoredDuringExecution": [{
|
|
"labelSelector":{
|
|
"matchExpressions": [{
|
|
"key": "service",
|
|
"operator": "In",
|
|
"values": ["securityscan", "value2"]
|
|
}]
|
|
},
|
|
"topologyKey": "kubernetes.io/hostname"
|
|
}]
|
|
}}`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
// Wait a bit to allow scheduler to do its thing
|
|
// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
|
|
framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
|
|
time.Sleep(10 * time.Second)
|
|
|
|
verifyResult(c, podName, 0, 1, ns)
|
|
})
|
|
|
|
// test the pod affinity successful matching scenario.
|
|
It("validates that InterPodAffinity is respected if matching", func() {
|
|
// launch a pod to find a node which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first of them. Depending on the
|
|
// cluster and the scheduler it might be that a "normal" pod cannot be
|
|
// scheduled onto it.
|
|
By("Trying to launch a pod with a label to get a node which can launch it.")
|
|
podName := "with-label-" + string(uuid.NewUUID())
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
Labels: map[string]string{"security": "S1"},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Trying to apply a random label on the found node.")
|
|
k := "e2e.inter-pod-affinity.kubernetes.io/zone"
|
|
v := "china-e2etest"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, k, v)
|
|
framework.ExpectNodeHasLabel(c, nodeName, k, v)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, k)
|
|
|
|
By("Trying to launch the pod, now with podAffinity.")
|
|
labelPodName := "with-podaffinity-" + string(uuid.NewUUID())
|
|
pod, err = c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: labelPodName,
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/affinity": `
|
|
{"podAffinity": {
|
|
"requiredDuringSchedulingIgnoredDuringExecution": [{
|
|
"labelSelector":{
|
|
"matchExpressions": [{
|
|
"key": "security",
|
|
"operator": "In",
|
|
"values": ["S1", "value2"]
|
|
}]
|
|
},
|
|
"topologyKey": "` + k + `",
|
|
"namespaces":["` + ns + `"]
|
|
}]
|
|
}}`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: labelPodName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
|
|
// check that pod got scheduled. We intentionally DO NOT check that the
|
|
// pod is running because this will create a race condition with the
|
|
// kubelet and the scheduler: the scheduler might have scheduled a pod
|
|
// already when the kubelet does not know about its new label yet. The
|
|
// kubelet will then refuse to launch the pod.
|
|
framework.ExpectNoError(framework.WaitForPodNotPending(c, ns, labelPodName, pod.ResourceVersion))
|
|
labelPod, err := c.Pods(ns).Get(labelPodName)
|
|
framework.ExpectNoError(err)
|
|
Expect(labelPod.Spec.NodeName).To(Equal(nodeName))
|
|
})
|
|
|
|
// test when the pod anti affinity rule is not satisfied, the pod would stay pending.
|
|
It("validates that InterPodAntiAffinity is respected if matching 2", func() {
|
|
// launch pods to find nodes which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first and the second of them.
|
|
// Depending on the cluster and the scheduler it might be that a "normal" pod
|
|
// cannot be scheduled onto it.
|
|
By("Launching two pods on two distinct nodes to get two node names")
|
|
CreateHostPortPods(f, "host-port", 2, true)
|
|
defer framework.DeleteRC(f.Client, f.Namespace.Name, "host-port")
|
|
podList, err := c.Pods(ns).List(api.ListOptions{})
|
|
ExpectNoError(err)
|
|
Expect(len(podList.Items)).To(Equal(2))
|
|
nodeNames := []string{podList.Items[0].Spec.NodeName, podList.Items[1].Spec.NodeName}
|
|
Expect(nodeNames[0]).ToNot(Equal(nodeNames[1]))
|
|
|
|
By("Applying a random label to both nodes.")
|
|
k := "e2e.inter-pod-affinity.kubernetes.io/zone"
|
|
v := "china-e2etest"
|
|
for _, nodeName := range nodeNames {
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, k, v)
|
|
framework.ExpectNodeHasLabel(c, nodeName, k, v)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, k)
|
|
}
|
|
|
|
By("Trying to launch another pod on the first node with the service label.")
|
|
podName := "with-label-" + string(uuid.NewUUID())
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
Labels: map[string]string{"service": "S1"},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
NodeSelector: map[string]string{k: v}, // only launch on our two nodes
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
By("Trying to launch another pod, now with podAntiAffinity with same Labels.")
|
|
labelPodName := "with-podantiaffinity-" + string(uuid.NewUUID())
|
|
_, err = c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: labelPodName,
|
|
Labels: map[string]string{"service": "Diff"},
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/affinity": `
|
|
{"podAntiAffinity": {
|
|
"requiredDuringSchedulingIgnoredDuringExecution": [{
|
|
"labelSelector":{
|
|
"matchExpressions": [{
|
|
"key": "service",
|
|
"operator": "In",
|
|
"values": ["S1", "value2"]
|
|
}]
|
|
},
|
|
"topologyKey": "` + k + `",
|
|
"namespaces": ["` + ns + `"]
|
|
}]
|
|
}}`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: labelPodName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
NodeSelector: map[string]string{k: v}, // only launch on our two nodes, contradicting the podAntiAffinity
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
|
|
// Wait a bit to allow scheduler to do its thing
|
|
// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
|
|
framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
|
|
time.Sleep(10 * time.Second)
|
|
|
|
verifyResult(c, labelPodName, 3, 1, ns)
|
|
})
|
|
|
|
// test the pod affinity successful matching scenario with multiple Label Operators.
|
|
It("validates that InterPodAffinity is respected if matching with multiple Affinities", func() {
|
|
// launch a pod to find a node which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first of them. Depending on the
|
|
// cluster and the scheduler it might be that a "normal" pod cannot be
|
|
// scheduled onto it.
|
|
By("Trying to launch a pod with a label to get a node which can launch it.")
|
|
podName := "with-label-" + string(uuid.NewUUID())
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
Labels: map[string]string{"security": "S1"},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Trying to apply a random label on the found node.")
|
|
k := "e2e.inter-pod-affinity.kubernetes.io/zone"
|
|
v := "kubernetes-e2e"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, k, v)
|
|
framework.ExpectNodeHasLabel(c, nodeName, k, v)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, k)
|
|
|
|
By("Trying to launch the pod, now with multiple pod affinities with diff LabelOperators.")
|
|
labelPodName := "with-podaffinity-" + string(uuid.NewUUID())
|
|
pod, err = c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: labelPodName,
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/affinity": `
|
|
{"podAffinity": {
|
|
"requiredDuringSchedulingIgnoredDuringExecution": [{
|
|
"labelSelector":{
|
|
"matchExpressions": [{
|
|
"key": "security",
|
|
"operator": "In",
|
|
"values": ["S1", "value2"]
|
|
},
|
|
{
|
|
"key": "security",
|
|
"operator": "NotIn",
|
|
"values": ["S2"]
|
|
},
|
|
{
|
|
"key": "security",
|
|
"operator":"Exists"
|
|
}]
|
|
},
|
|
"topologyKey": "` + k + `"
|
|
}]
|
|
}}`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: labelPodName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
|
|
// check that pod got scheduled. We intentionally DO NOT check that the
|
|
// pod is running because this will create a race condition with the
|
|
// kubelet and the scheduler: the scheduler might have scheduled a pod
|
|
// already when the kubelet does not know about its new label yet. The
|
|
// kubelet will then refuse to launch the pod.
|
|
framework.ExpectNoError(framework.WaitForPodNotPending(c, ns, labelPodName, pod.ResourceVersion))
|
|
labelPod, err := c.Pods(ns).Get(labelPodName)
|
|
framework.ExpectNoError(err)
|
|
Expect(labelPod.Spec.NodeName).To(Equal(nodeName))
|
|
})
|
|
|
|
// test the pod affinity and anti affinity successful matching scenario.
|
|
It("validates that InterPod Affinity and AntiAffinity is respected if matching", func() {
|
|
// launch a pod to find a node which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first of them. Depending on the
|
|
// cluster and the scheduler it might be that a "normal" pod cannot be
|
|
// scheduled onto it.
|
|
By("Trying to launch a pod with a label to get a node which can launch it.")
|
|
podName := "with-label-" + string(uuid.NewUUID())
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
Labels: map[string]string{"security": "S1"},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Trying to apply a random label on the found node.")
|
|
k := "e2e.inter-pod-affinity.kubernetes.io/zone"
|
|
v := "e2e-testing"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, k, v)
|
|
framework.ExpectNodeHasLabel(c, nodeName, k, v)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, k)
|
|
|
|
By("Trying to launch the pod, now with Pod affinity and anti affinity.")
|
|
labelPodName := "with-podantiaffinity-" + string(uuid.NewUUID())
|
|
pod, err = c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: labelPodName,
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/affinity": `
|
|
{"podAffinity": {
|
|
"requiredDuringSchedulingIgnoredDuringExecution": [{
|
|
"labelSelector": {
|
|
"matchExpressions": [{
|
|
"key": "security",
|
|
"operator": "In",
|
|
"values":["S1"]
|
|
}]
|
|
},
|
|
"topologyKey": "` + k + `"
|
|
}]
|
|
},
|
|
"podAntiAffinity": {
|
|
"requiredDuringSchedulingIgnoredDuringExecution": [{
|
|
"labelSelector": {
|
|
"matchExpressions": [{
|
|
"key": "security",
|
|
"operator": "In",
|
|
"values":["S2"]
|
|
}]
|
|
},
|
|
"topologyKey": "` + k + `"
|
|
}]
|
|
}}`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: labelPodName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
|
|
// check that pod got scheduled. We intentionally DO NOT check that the
|
|
// pod is running because this will create a race condition with the
|
|
// kubelet and the scheduler: the scheduler might have scheduled a pod
|
|
// already when the kubelet does not know about its new label yet. The
|
|
// kubelet will then refuse to launch the pod.
|
|
framework.ExpectNoError(framework.WaitForPodNotPending(c, ns, labelPodName, pod.ResourceVersion))
|
|
labelPod, err := c.Pods(ns).Get(labelPodName)
|
|
framework.ExpectNoError(err)
|
|
Expect(labelPod.Spec.NodeName).To(Equal(nodeName))
|
|
})
|
|
|
|
// Verify that an escaped JSON string of pod affinity and pod anti affinity in a YAML PodSpec works.
|
|
It("validates that embedding the JSON PodAffinity and PodAntiAffinity setting as a string in the annotation value work", func() {
|
|
// launch a pod to find a node which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first of them. Depending on the
|
|
// cluster and the scheduler it might be that a "normal" pod cannot be
|
|
// scheduled onto it.
|
|
By("Trying to launch a pod with label to get a node which can launch it.")
|
|
podName := "with-label-" + string(uuid.NewUUID())
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
Labels: map[string]string{"security": "S1"},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Trying to apply a label with fake az info on the found node.")
|
|
k := "e2e.inter-pod-affinity.kubernetes.io/zone"
|
|
v := "e2e-az1"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, k, v)
|
|
framework.ExpectNodeHasLabel(c, nodeName, k, v)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, k)
|
|
|
|
By("Trying to launch a pod that with PodAffinity & PodAntiAffinity setting as embedded JSON string in the annotation value.")
|
|
labelPodName := podWithPodAffinity.Name
|
|
pod, err = c.Pods(ns).Create(&podWithPodAffinity)
|
|
framework.ExpectNoError(err)
|
|
// check that pod got scheduled. We intentionally DO NOT check that the
|
|
// pod is running because this will create a race condition with the
|
|
// kubelet and the scheduler: the scheduler might have scheduled a pod
|
|
// already when the kubelet does not know about its new label yet. The
|
|
// kubelet will then refuse to launch the pod.
|
|
framework.ExpectNoError(framework.WaitForPodNotPending(c, ns, labelPodName, pod.ResourceVersion))
|
|
labelPod, err := c.Pods(ns).Get(labelPodName)
|
|
framework.ExpectNoError(err)
|
|
Expect(labelPod.Spec.NodeName).To(Equal(nodeName))
|
|
})
|
|
|
|
// 1. Run a pod to get an available node, then delete the pod
|
|
// 2. Taint the node with a random taint
|
|
// 3. Try to relaunch the pod with tolerations tolerate the taints on node,
|
|
// and the pod's nodeName specified to the name of node found in step 1
|
|
It("validates that taints-tolerations is respected if matching", func() {
|
|
// launch a pod to find a node which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first of them. Depending on the
|
|
// cluster and the scheduler it might be that a "normal" pod cannot be
|
|
// scheduled onto it.
|
|
By("Trying to launch a pod without a toleration to get a node which can launch it.")
|
|
podName := "without-toleration"
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Explicitly delete pod here to free the resource it takes.")
|
|
err = c.Pods(ns).Delete(podName, api.NewDeleteOptions(0))
|
|
framework.ExpectNoError(err)
|
|
|
|
By("Trying to apply a random taint on the found node.")
|
|
taintName := fmt.Sprintf("kubernetes.io/e2e-taint-key-%s", string(uuid.NewUUID()))
|
|
taintValue := "testing-taint-value"
|
|
taintEffect := api.TaintEffectNoSchedule
|
|
framework.AddOrUpdateTaintOnNode(c, nodeName, api.Taint{Key: taintName, Value: taintValue, Effect: taintEffect})
|
|
framework.ExpectNodeHasTaint(c, nodeName, taintName)
|
|
defer framework.RemoveTaintOffNode(c, nodeName, taintName)
|
|
|
|
By("Trying to apply a random label on the found node.")
|
|
labelKey := fmt.Sprintf("kubernetes.io/e2e-label-key-%s", string(uuid.NewUUID()))
|
|
labelValue := "testing-label-value"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, labelKey, labelValue)
|
|
framework.ExpectNodeHasLabel(c, nodeName, labelKey, labelValue)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, labelKey)
|
|
|
|
By("Trying to relaunch the pod, now with tolerations.")
|
|
tolerationPodName := "with-tolerations"
|
|
pod, err = c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: tolerationPodName,
|
|
Annotations: map[string]string{
|
|
"scheduler.alpha.kubernetes.io/tolerations": `
|
|
[
|
|
{
|
|
"key": "` + taintName + `",
|
|
"value": "` + taintValue + `",
|
|
"effect": "` + string(taintEffect) + `"
|
|
}
|
|
]`,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
NodeSelector: map[string]string{labelKey: labelValue},
|
|
Containers: []api.Container{
|
|
{
|
|
Name: tolerationPodName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
|
|
// check that pod got scheduled. We intentionally DO NOT check that the
|
|
// pod is running because this will create a race condition with the
|
|
// kubelet and the scheduler: the scheduler might have scheduled a pod
|
|
// already when the kubelet does not know about its new taint yet. The
|
|
// kubelet will then refuse to launch the pod.
|
|
framework.ExpectNoError(framework.WaitForPodNotPending(c, ns, tolerationPodName, pod.ResourceVersion))
|
|
deployedPod, err := c.Pods(ns).Get(tolerationPodName)
|
|
framework.ExpectNoError(err)
|
|
Expect(deployedPod.Spec.NodeName).To(Equal(nodeName))
|
|
})
|
|
|
|
// 1. Run a pod to get an available node, then delete the pod
|
|
// 2. Taint the node with a random taint
|
|
// 3. Try to relaunch the pod still no tolerations,
|
|
// and the pod's nodeName specified to the name of node found in step 1
|
|
It("validates that taints-tolerations is respected if not matching", func() {
|
|
// launch a pod to find a node which can launch a pod. We intentionally do
|
|
// not just take the node list and choose the first of them. Depending on the
|
|
// cluster and the scheduler it might be that a "normal" pod cannot be
|
|
// scheduled onto it.
|
|
By("Trying to launch a pod without a toleration to get a node which can launch it.")
|
|
podName := "without-toleration"
|
|
pod, err := c.Pods(ns).Create(&api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podName,
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podName,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, pod))
|
|
pod, err = c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
|
|
By("Explicitly delete pod here to free the resource it takes.")
|
|
err = c.Pods(ns).Delete(podName, api.NewDeleteOptions(0))
|
|
framework.ExpectNoError(err)
|
|
|
|
By("Trying to apply a random taint on the found node.")
|
|
taintName := fmt.Sprintf("kubernetes.io/e2e-taint-key-%s", string(uuid.NewUUID()))
|
|
taintValue := "testing-taint-value"
|
|
taintEffect := api.TaintEffectNoSchedule
|
|
framework.AddOrUpdateTaintOnNode(c, nodeName, api.Taint{Key: taintName, Value: taintValue, Effect: taintEffect})
|
|
framework.ExpectNodeHasTaint(c, nodeName, taintName)
|
|
defer framework.RemoveTaintOffNode(c, nodeName, taintName)
|
|
|
|
By("Trying to apply a random label on the found node.")
|
|
labelKey := fmt.Sprintf("kubernetes.io/e2e-label-key-%s", string(uuid.NewUUID()))
|
|
labelValue := "testing-label-value"
|
|
framework.AddOrUpdateLabelOnNode(c, nodeName, labelKey, labelValue)
|
|
framework.ExpectNodeHasLabel(c, nodeName, labelKey, labelValue)
|
|
defer framework.RemoveLabelOffNode(c, nodeName, labelKey)
|
|
|
|
By("Trying to relaunch the pod, still no tolerations.")
|
|
podNameNoTolerations := "still-no-tolerations"
|
|
podNoTolerations := &api.Pod{
|
|
TypeMeta: unversioned.TypeMeta{
|
|
Kind: "Pod",
|
|
},
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: podNameNoTolerations,
|
|
},
|
|
Spec: api.PodSpec{
|
|
NodeSelector: map[string]string{labelKey: labelValue},
|
|
Containers: []api.Container{
|
|
{
|
|
Name: podNameNoTolerations,
|
|
Image: framework.GetPauseImageName(f.Client),
|
|
},
|
|
},
|
|
},
|
|
}
|
|
_, err = c.Pods(ns).Create(podNoTolerations)
|
|
framework.ExpectNoError(err)
|
|
|
|
// Wait a bit to allow scheduler to do its thing
|
|
// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
|
|
framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
|
|
time.Sleep(10 * time.Second)
|
|
verifyResult(c, podNameNoTolerations, 0, 1, ns)
|
|
|
|
By("Removing taint off the node")
|
|
framework.RemoveTaintOffNode(c, nodeName, taintName)
|
|
// Wait a bit to allow scheduler to do its thing
|
|
// TODO: this is brittle; there's no guarantee the scheduler will have run in 10 seconds.
|
|
framework.Logf("Sleeping 10 seconds and crossing our fingers that scheduler will run in that time.")
|
|
time.Sleep(10 * time.Second)
|
|
// as taint removed off the node, expect the pod can be successfully scheduled
|
|
verifyResult(c, podNameNoTolerations, 1, 0, ns)
|
|
})
|
|
})
|