mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
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731 lines
24 KiB
Go
731 lines
24 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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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"path/filepath"
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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/fields"
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"k8s.io/kubernetes/pkg/util"
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"k8s.io/kubernetes/pkg/util/sets"
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"k8s.io/kubernetes/pkg/util/system"
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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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// variable set in BeforeEach, never modified afterwards
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var masterNodes sets.String
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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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scheduledPods = append(scheduledPods, pod)
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} else {
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notScheduledPods = append(notScheduledPods, pod)
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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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func verifyResult(c *client.Client, podName string, ns string) {
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allPods, err := c.Pods(api.NamespaceAll).List(api.ListOptions{})
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framework.ExpectNoError(err)
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scheduledPods, notScheduledPods := getPodsScheduled(allPods)
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selector := fields.Set{
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"involvedObject.kind": "Pod",
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"involvedObject.name": podName,
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"involvedObject.namespace": ns,
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"source": api.DefaultSchedulerName,
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"reason": "FailedScheduling",
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}.AsSelector()
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options := api.ListOptions{FieldSelector: selector}
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schedEvents, err := c.Events(ns).List(options)
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framework.ExpectNoError(err)
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// If we failed to find event with a capitalized first letter of reason
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// try looking for one starting with a small one for backward compatibility.
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// If we don't do it we end up in #15806.
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// TODO: remove this block when we don't care about supporting v1.0 too much.
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if len(schedEvents.Items) == 0 {
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selector := fields.Set{
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"involvedObject.kind": "Pod",
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"involvedObject.name": podName,
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"involvedObject.namespace": ns,
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"source": "scheduler",
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"reason": "failedScheduling",
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}.AsSelector()
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options := api.ListOptions{FieldSelector: selector}
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schedEvents, err = c.Events(ns).List(options)
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framework.ExpectNoError(err)
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}
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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(1), printOnce(fmt.Sprintf("Not scheduled Pods: %#v", notScheduledPods)))
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Expect(schedEvents.Items).ToNot(BeEmpty(), 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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// Waits until all existing pods are scheduled and returns their amount.
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func waitForStableCluster(c *client.Client) int {
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timeout := 10 * time.Minute
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startTime := time.Now()
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allPods, err := c.Pods(api.NamespaceAll).List(api.ListOptions{})
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framework.ExpectNoError(err)
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scheduledPods, currentlyNotScheduledPods := getPodsScheduled(allPods)
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for len(currentlyNotScheduledPods) != 0 {
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time.Sleep(2 * time.Second)
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allPods, err := c.Pods(api.NamespaceAll).List(api.ListOptions{})
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framework.ExpectNoError(err)
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scheduledPods, currentlyNotScheduledPods = getPodsScheduled(allPods)
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if startTime.Add(timeout).Before(time.Now()) {
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framework.Failf("Timed out after %v waiting for stable cluster.", timeout)
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break
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}
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}
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return len(scheduledPods)
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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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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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nodes, err := c.Nodes().List(api.ListOptions{})
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masterNodes = sets.NewString()
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for _, node := range nodes.Items {
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if system.IsMasterNode(&node) {
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masterNodes.Insert(node.Name)
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} else {
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nodeList.Items = append(nodeList.Items, node)
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}
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}
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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 := c.Pods(api.NamespaceSystem).List(api.ListOptions{})
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Expect(err).NotTo(HaveOccurred())
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systemPodsNo = 0
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for _, pod := range systemPods.Items {
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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(api.NamespaceSystem, systemPodsNo, framework.PodReadyBeforeTimeout)
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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 := waitForStableCluster(c)
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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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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: "gcr.io/google_containers/pause:2.0",
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},
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},
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},
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}, true)
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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: "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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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, ns)
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cleanupPods(c, 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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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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}
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waitForStableCluster(c)
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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.PodRunning {
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framework.Logf("Pod %v requesting resource %v 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 := int64(500)
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for name, leftCapacity := range nodeToCapacityMap {
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framework.Logf("Node: %v has capacity: %v", 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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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: "gcr.io/google_containers/pause:2.0",
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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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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: "gcr.io/google_containers/pause:2.0",
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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, ns)
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cleanupPods(c, 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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waitForStableCluster(c)
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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: "gcr.io/google_containers/pause:2.0",
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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, ns)
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cleanupPods(c, ns)
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})
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It("validates that a pod with an invalid NodeAffinity is rejected [Feature:NodeAffinity]", 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: "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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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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cleanupPods(c, ns)
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})
|
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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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_, 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: "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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framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, podName, ns))
|
|
pod, err := c.Pods(ns).Get(podName)
|
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framework.ExpectNoError(err)
|
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|
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nodeName := pod.Spec.NodeName
|
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err = c.Pods(ns).Delete(podName, api.NewDeleteOptions(0))
|
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framework.ExpectNoError(err)
|
|
|
|
By("Trying to apply a random label on the found node.")
|
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k := fmt.Sprintf("kubernetes.io/e2e-%s", string(util.NewUUID()))
|
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v := "42"
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patch := fmt.Sprintf(`{"metadata":{"labels":{"%s":"%s"}}}`, k, v)
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err = c.Patch(api.MergePatchType).Resource("nodes").Name(nodeName).Body([]byte(patch)).Do().Error()
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framework.ExpectNoError(err)
|
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|
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node, err := c.Nodes().Get(nodeName)
|
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framework.ExpectNoError(err)
|
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Expect(node.Labels[k]).To(Equal(v))
|
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|
|
By("Trying to relaunch the pod, now with labels.")
|
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labelPodName := "with-labels"
|
|
_, 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{
|
|
Name: labelPodName,
|
|
},
|
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Spec: api.PodSpec{
|
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Containers: []api.Container{
|
|
{
|
|
Name: labelPodName,
|
|
Image: "gcr.io/google_containers/pause:2.0",
|
|
},
|
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},
|
|
NodeSelector: map[string]string{
|
|
"kubernetes.io/hostname": nodeName,
|
|
k: v,
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
defer c.Pods(ns).Delete(labelPodName, api.NewDeleteOptions(0))
|
|
|
|
// 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))
|
|
})
|
|
|
|
// 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 [Feature:NodeAffinity]", func() {
|
|
By("Trying to schedule Pod with nonempty NodeSelector.")
|
|
podName := "restricted-pod"
|
|
|
|
waitForStableCluster(c)
|
|
|
|
_, 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: "gcr.io/google_containers/pause:2.0",
|
|
},
|
|
},
|
|
},
|
|
})
|
|
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, ns)
|
|
cleanupPods(c, 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 [Feature:NodeAffinity]", 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"
|
|
_, 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: "gcr.io/google_containers/pause:2.0",
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, podName, ns))
|
|
pod, err := c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
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(util.NewUUID()))
|
|
v := "42"
|
|
patch := fmt.Sprintf(`{"metadata":{"labels":{"%s":"%s"}}}`, k, v)
|
|
err = c.Patch(api.MergePatchType).Resource("nodes").Name(nodeName).Body([]byte(patch)).Do().Error()
|
|
framework.ExpectNoError(err)
|
|
|
|
node, err := c.Nodes().Get(nodeName)
|
|
framework.ExpectNoError(err)
|
|
Expect(node.Labels[k]).To(Equal(v))
|
|
|
|
By("Trying to relaunch the pod, now with labels.")
|
|
labelPodName := "with-labels"
|
|
_, 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: "gcr.io/google_containers/pause:2.0",
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
defer c.Pods(ns).Delete(labelPodName, api.NewDeleteOptions(0))
|
|
|
|
// 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))
|
|
})
|
|
|
|
// 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 [Feature:NodeAffinity]", 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"
|
|
_, 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: "gcr.io/google_containers/pause:2.0",
|
|
},
|
|
},
|
|
},
|
|
})
|
|
framework.ExpectNoError(err)
|
|
framework.ExpectNoError(framework.WaitForPodRunningInNamespace(c, podName, ns))
|
|
pod, err := c.Pods(ns).Get(podName)
|
|
framework.ExpectNoError(err)
|
|
|
|
nodeName := pod.Spec.NodeName
|
|
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"
|
|
patch := fmt.Sprintf(`{"metadata":{"labels":{"%s":"%s"}}}`, k, v)
|
|
err = c.Patch(api.MergePatchType).Resource("nodes").Name(nodeName).Body([]byte(patch)).Do().Error()
|
|
framework.ExpectNoError(err)
|
|
|
|
node, err := c.Nodes().Get(nodeName)
|
|
framework.ExpectNoError(err)
|
|
Expect(node.Labels[k]).To(Equal(v))
|
|
|
|
By("Trying to launch a pod that with NodeAffinity setting as embedded JSON string in the annotation value.")
|
|
labelPodName := "with-labels"
|
|
nodeSelectionRoot := filepath.Join(framework.TestContext.RepoRoot, "docs/user-guide/node-selection")
|
|
testPodPath := filepath.Join(nodeSelectionRoot, "pod-with-node-affinity.yaml")
|
|
framework.RunKubectlOrDie("create", "-f", testPodPath, fmt.Sprintf("--namespace=%v", ns))
|
|
defer c.Pods(ns).Delete(labelPodName, api.NewDeleteOptions(0))
|
|
|
|
// 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))
|
|
})
|
|
})
|