mirror of https://github.com/k3s-io/k3s
626 lines
19 KiB
Go
626 lines
19 KiB
Go
/*
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Copyright 2014 Google Inc. 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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"strconv"
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"strings"
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"time"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/api"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/client"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/labels"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
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"github.com/GoogleCloudPlatform/kubernetes/pkg/watch"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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func runLivenessTest(c *client.Client, podDescr *api.Pod) {
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ns := "e2e-test-" + string(util.NewUUID())
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By(fmt.Sprintf("Creating pod %s in namespace %s", podDescr.Name, ns))
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_, err := c.Pods(ns).Create(podDescr)
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expectNoError(err, fmt.Sprintf("creating pod %s", podDescr.Name))
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// At the end of the test, clean up by removing the pod.
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defer func() {
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By("deleting the pod")
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c.Pods(ns).Delete(podDescr.Name)
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}()
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// Wait until the pod is not pending. (Here we need to check for something other than
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// 'Pending' other than checking for 'Running', since when failures occur, we go to
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// 'Terminated' which can cause indefinite blocking.)
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expectNoError(waitForPodNotPending(c, ns, podDescr.Name),
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fmt.Sprintf("starting pod %s in namespace %s", podDescr.Name, ns))
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By(fmt.Sprintf("Started pod %s in namespace %s", podDescr.Name, ns))
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// Check the pod's current state and verify that restartCount is present.
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By("checking the pod's current state and verifying that restartCount is present")
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pod, err := c.Pods(ns).Get(podDescr.Name)
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expectNoError(err, fmt.Sprintf("getting pod %s in namespace %s", podDescr.Name, ns))
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initialRestartCount := pod.Status.Info["liveness"].RestartCount
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By(fmt.Sprintf("Initial restart count of pod %s is %d", podDescr.Name, initialRestartCount))
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// Wait for at most 48 * 5 = 240s = 4 minutes until restartCount is incremented
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pass := false
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for i := 0; i < 48; i++ {
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// Wait until restartCount is incremented.
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time.Sleep(5 * time.Second)
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pod, err = c.Pods(ns).Get(podDescr.Name)
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expectNoError(err, fmt.Sprintf("getting pod %s", podDescr.Name))
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restartCount := pod.Status.Info["liveness"].RestartCount
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By(fmt.Sprintf("Restart count of pod %s in namespace %s is now %d", podDescr.Name, ns, restartCount))
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if restartCount > initialRestartCount {
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By(fmt.Sprintf("Restart count of pod %s in namespace %s increased from %d to %d during the test", podDescr.Name, ns, initialRestartCount, restartCount))
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pass = true
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break
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}
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}
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if !pass {
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Fail(fmt.Sprintf("Did not see the restart count of pod %s in namespace %s increase from %d during the test", podDescr.Name, ns, initialRestartCount))
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}
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}
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var _ = Describe("Pods", func() {
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var c *client.Client
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BeforeEach(func() {
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var err error
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c, err = loadClient()
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expectNoError(err)
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})
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It("should be submitted and removed", func() {
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podClient := c.Pods(api.NamespaceDefault)
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By("creating the pod")
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name := "pod-update-" + string(util.NewUUID())
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value := strconv.Itoa(time.Now().Nanosecond())
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: name,
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Labels: map[string]string{
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"name": "foo",
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"time": 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: "nginx",
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Image: "dockerfile/nginx",
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Ports: []api.ContainerPort{{ContainerPort: 80}},
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LivenessProbe: &api.Probe{
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Handler: api.Handler{
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HTTPGet: &api.HTTPGetAction{
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Path: "/index.html",
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Port: util.NewIntOrStringFromInt(8080),
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},
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},
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InitialDelaySeconds: 30,
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},
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},
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},
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},
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}
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By("setting up watch")
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pods, err := podClient.List(labels.SelectorFromSet(labels.Set(map[string]string{"time": value})))
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if err != nil {
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Fail(fmt.Sprintf("Failed to query for pods: %v", err))
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}
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Expect(len(pods.Items)).To(Equal(0))
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w, err := podClient.Watch(
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labels.SelectorFromSet(labels.Set(map[string]string{"time": value})), labels.Everything(), pods.ListMeta.ResourceVersion)
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if err != nil {
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Fail(fmt.Sprintf("Failed to set up watch: %v", err))
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}
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By("submitting the pod to kubernetes")
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// We call defer here in case there is a problem with
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// the test so we can ensure that we clean up after
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// ourselves
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defer podClient.Delete(pod.Name)
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_, err = podClient.Create(pod)
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if err != nil {
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Fail(fmt.Sprintf("Failed to create pod: %v", err))
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}
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By("verifying the pod is in kubernetes")
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pods, err = podClient.List(labels.SelectorFromSet(labels.Set(map[string]string{"time": value})))
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if err != nil {
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Fail(fmt.Sprintf("Failed to query for pods: %v", err))
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}
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Expect(len(pods.Items)).To(Equal(1))
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By("veryfying pod creation was observed")
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select {
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case event, _ := <-w.ResultChan():
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if event.Type != watch.Added {
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Fail(fmt.Sprintf("Failed to observe pod creation: %v", event))
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}
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case <-time.After(podStartTimeout):
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Fail("Timeout while waiting for pod creation")
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}
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By("deleting the pod")
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podClient.Delete(pod.Name)
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pods, err = podClient.List(labels.SelectorFromSet(labels.Set(map[string]string{"time": value})))
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if err != nil {
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Fail(fmt.Sprintf("Failed to delete pod: %v", err))
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}
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Expect(len(pods.Items)).To(Equal(0))
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By("veryfying pod deletion was observed")
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deleted := false
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timeout := false
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timer := time.After(podStartTimeout)
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for !deleted && !timeout {
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select {
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case event, _ := <-w.ResultChan():
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if event.Type == watch.Deleted {
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deleted = true
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}
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case <-timer:
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timeout = true
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}
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}
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if !deleted {
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Fail("Failed to observe pod deletion")
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}
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})
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It("should be updated", func() {
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podClient := c.Pods(api.NamespaceDefault)
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By("creating the pod")
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name := "pod-update-" + string(util.NewUUID())
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value := strconv.Itoa(time.Now().Nanosecond())
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: name,
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Labels: map[string]string{
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"name": "foo",
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"time": 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: "nginx",
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Image: "dockerfile/nginx",
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Ports: []api.ContainerPort{{ContainerPort: 80}},
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LivenessProbe: &api.Probe{
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Handler: api.Handler{
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HTTPGet: &api.HTTPGetAction{
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Path: "/index.html",
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Port: util.NewIntOrStringFromInt(8080),
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},
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},
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InitialDelaySeconds: 30,
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},
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},
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},
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},
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}
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By("submitting the pod to kubernetes")
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defer func() {
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By("deleting the pod")
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podClient.Delete(pod.Name)
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}()
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_, err := podClient.Create(pod)
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if err != nil {
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Fail(fmt.Sprintf("Failed to create pod: %v", err))
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}
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expectNoError(waitForPodRunning(c, pod.Name))
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By("verifying the pod is in kubernetes")
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pods, err := podClient.List(labels.SelectorFromSet(labels.Set(map[string]string{"time": value})))
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Expect(len(pods.Items)).To(Equal(1))
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By("retrieving the pod")
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podOut, err := podClient.Get(pod.Name)
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if err != nil {
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Fail(fmt.Sprintf("Failed to get pod: %v", err))
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}
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By("updating the pod")
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value = "time" + value
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pod.Labels["time"] = value
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pod.ResourceVersion = podOut.ResourceVersion
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pod.UID = podOut.UID
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pod.Spec.Host = podOut.Spec.Host
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pod, err = podClient.Update(pod)
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if err != nil {
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Fail(fmt.Sprintf("Failed to update pod: %v", err))
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}
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expectNoError(waitForPodRunning(c, pod.Name))
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By("verifying the updated pod is in kubernetes")
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pods, err = podClient.List(labels.SelectorFromSet(labels.Set(map[string]string{"time": value})))
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Expect(len(pods.Items)).To(Equal(1))
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fmt.Println("pod update OK")
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})
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It("should contain environment variables for services", func() {
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// Make a pod that will be a service.
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// This pod serves its hostname via HTTP.
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serverName := "server-envvars-" + string(util.NewUUID())
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serverPod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: serverName,
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Labels: map[string]string{"name": serverName},
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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: "srv",
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Image: "kubernetes/serve_hostname",
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Ports: []api.ContainerPort{{ContainerPort: 9376}},
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},
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},
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},
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}
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defer c.Pods(api.NamespaceDefault).Delete(serverPod.Name)
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_, err := c.Pods(api.NamespaceDefault).Create(serverPod)
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if err != nil {
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Fail(fmt.Sprintf("Failed to create serverPod: %v", err))
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}
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expectNoError(waitForPodRunning(c, serverPod.Name))
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// This service exposes port 8080 of the test pod as a service on port 8765
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// TODO(filbranden): We would like to use a unique service name such as:
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// svcName := "svc-envvars-" + randomSuffix()
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// However, that affects the name of the environment variables which are the capitalized
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// service name, so that breaks this test. One possibility is to tweak the variable names
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// to match the service. Another is to rethink environment variable names and possibly
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// allow overriding the prefix in the service manifest.
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svcName := "fooservice"
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svc := &api.Service{
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ObjectMeta: api.ObjectMeta{
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Name: svcName,
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Labels: map[string]string{
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"name": svcName,
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},
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},
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Spec: api.ServiceSpec{
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Port: 8765,
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ContainerPort: util.NewIntOrStringFromInt(8080),
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Selector: map[string]string{
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"name": serverName,
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},
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},
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}
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defer c.Services(api.NamespaceDefault).Delete(svc.Name)
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_, err = c.Services(api.NamespaceDefault).Create(svc)
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if err != nil {
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Fail(fmt.Sprintf("Failed to create service: %v", err))
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}
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// TODO: we don't have a way to wait for a service to be "running". // If this proves flaky, then we will need to retry the clientPod or insert a sleep.
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// Make a client pod that verifies that it has the service environment variables.
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clientName := "client-envvars-" + string(util.NewUUID())
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clientPod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: clientName,
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Labels: map[string]string{"name": clientName},
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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: "env3cont",
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Image: "busybox",
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Command: []string{"sh", "-c", "env; sleep 600"},
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},
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},
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RestartPolicy: api.RestartPolicy{
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Never: &api.RestartPolicyNever{},
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},
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},
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}
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defer c.Pods(api.NamespaceDefault).Delete(clientPod.Name)
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_, err = c.Pods(api.NamespaceDefault).Create(clientPod)
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if err != nil {
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Fail(fmt.Sprintf("Failed to create pod: %v", err))
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}
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expectNoError(waitForPodRunning(c, clientPod.Name))
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// Grab its logs. Get host first.
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clientPodStatus, err := c.Pods(api.NamespaceDefault).Get(clientPod.Name)
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if err != nil {
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Fail(fmt.Sprintf("Failed to get clientPod to know host: %v", err))
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}
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By(fmt.Sprintf("Trying to get logs from host %s pod %s container %s: %v",
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clientPodStatus.Status.Host, clientPodStatus.Name, clientPodStatus.Spec.Containers[0].Name, err))
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var logs []byte
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start := time.Now()
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// Sometimes the actual containers take a second to get started, try to get logs for 60s
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for time.Now().Sub(start) < (60 * time.Second) {
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logs, err = c.Get().
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Prefix("proxy").
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Resource("minions").
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Name(clientPodStatus.Status.Host).
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Suffix("containerLogs", api.NamespaceDefault, clientPodStatus.Name, clientPodStatus.Spec.Containers[0].Name).
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Do().
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Raw()
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fmt.Sprintf("clientPod logs:%v\n", string(logs))
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By(fmt.Sprintf("clientPod logs:%v\n", string(logs)))
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if strings.Contains(string(logs), "Internal Error") {
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By(fmt.Sprintf("Failed to get logs from host %s pod %s container %s: %v",
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clientPodStatus.Status.Host, clientPodStatus.Name, clientPodStatus.Spec.Containers[0].Name, string(logs)))
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time.Sleep(5 * time.Second)
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continue
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}
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break
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}
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toFind := []string{
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"FOOSERVICE_SERVICE_HOST=",
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"FOOSERVICE_SERVICE_PORT=",
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"FOOSERVICE_PORT=",
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"FOOSERVICE_PORT_8765_TCP_PORT=",
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"FOOSERVICE_PORT_8765_TCP_PROTO=",
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"FOOSERVICE_PORT_8765_TCP=",
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"FOOSERVICE_PORT_8765_TCP_ADDR=",
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}
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for _, m := range toFind {
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Expect(string(logs)).To(ContainSubstring(m), "%q in client env vars", m)
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}
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// We could try a wget the service from the client pod. But services.sh e2e test covers that pretty well.
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})
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It("should be restarted with a docker exec \"cat /tmp/health\" liveness probe", func() {
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runLivenessTest(c, &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "liveness-exec",
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Labels: map[string]string{"test": "liveness"},
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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: "liveness",
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Image: "busybox",
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Command: []string{"/bin/sh", "-c", "echo ok >/tmp/health; sleep 10; echo fail >/tmp/health; sleep 600"},
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LivenessProbe: &api.Probe{
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Handler: api.Handler{
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Exec: &api.ExecAction{
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Command: []string{"cat", "/tmp/health"},
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},
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},
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InitialDelaySeconds: 15,
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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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It("should be restarted with a /healthz http liveness probe", func() {
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runLivenessTest(c, &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: "liveness-http",
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Labels: map[string]string{"test": "liveness"},
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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: "liveness",
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Image: "kubernetes/liveness",
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Command: []string{"/server"},
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LivenessProbe: &api.Probe{
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Handler: api.Handler{
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HTTPGet: &api.HTTPGetAction{
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Path: "/healthz",
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Port: util.NewIntOrStringFromInt(8080),
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},
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},
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InitialDelaySeconds: 15,
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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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// The following tests for remote command execution and port forwarding are
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// commented out because the GCE environment does not currently have nsenter
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// in the kubelet's PATH, nor does it have socat installed. Once we figure
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// out the best way to have nsenter and socat available in GCE (and hopefully
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// all providers), we can enable these tests.
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/*
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It("should support remote command execution", func() {
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clientConfig, err := loadConfig()
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if err != nil {
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Fail(fmt.Sprintf("Failed to create client config: %v", err))
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}
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podClient := c.Pods(api.NamespaceDefault)
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By("creating the pod")
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name := "pod-exec-" + string(util.NewUUID())
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value := strconv.Itoa(time.Now().Nanosecond())
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pod := &api.Pod{
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ObjectMeta: api.ObjectMeta{
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Name: name,
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Labels: map[string]string{
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"name": "foo",
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"time": 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: "nginx",
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Image: "dockerfile/nginx",
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},
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},
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},
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}
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By("submitting the pod to kubernetes")
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_, err = podClient.Create(pod)
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if err != nil {
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Fail(fmt.Sprintf("Failed to create pod: %v", err))
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}
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defer func() {
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// We call defer here in case there is a problem with
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// the test so we can ensure that we clean up after
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// ourselves
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podClient.Delete(pod.Name)
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}()
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|
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By("waiting for the pod to start running")
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expectNoError(waitForPodRunning(c, pod.Name, 300*time.Second))
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|
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By("verifying the pod is in kubernetes")
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pods, err := podClient.List(labels.SelectorFromSet(labels.Set(map[string]string{"time": value})))
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if err != nil {
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Fail(fmt.Sprintf("Failed to query for pods: %v", err))
|
|
}
|
|
Expect(len(pods.Items)).To(Equal(1))
|
|
|
|
pod = &pods.Items[0]
|
|
By(fmt.Sprintf("executing command on host %s pod %s in container %s",
|
|
pod.Status.Host, pod.Name, pod.Spec.Containers[0].Name))
|
|
req := c.Get().
|
|
Prefix("proxy").
|
|
Resource("minions").
|
|
Name(pod.Status.Host).
|
|
Suffix("exec", api.NamespaceDefault, pod.Name, pod.Spec.Containers[0].Name)
|
|
|
|
out := &bytes.Buffer{}
|
|
e := remotecommand.New(req, clientConfig, []string{"whoami"}, nil, out, nil, false)
|
|
err = e.Execute()
|
|
if err != nil {
|
|
Fail(fmt.Sprintf("Failed to execute command on host %s pod %s in container %s: %v",
|
|
pod.Status.Host, pod.Name, pod.Spec.Containers[0].Name, err))
|
|
}
|
|
if e, a := "root\n", out.String(); e != a {
|
|
Fail(fmt.Sprintf("exec: whoami: expected '%s', got '%s'", e, a))
|
|
}
|
|
})
|
|
|
|
It("should support port forwarding", func() {
|
|
clientConfig, err := loadConfig()
|
|
if err != nil {
|
|
Fail(fmt.Sprintf("Failed to create client config: %v", err))
|
|
}
|
|
|
|
podClient := c.Pods(api.NamespaceDefault)
|
|
|
|
By("creating the pod")
|
|
name := "pod-portforward-" + string(util.NewUUID())
|
|
value := strconv.Itoa(time.Now().Nanosecond())
|
|
pod := &api.Pod{
|
|
ObjectMeta: api.ObjectMeta{
|
|
Name: name,
|
|
Labels: map[string]string{
|
|
"name": "foo",
|
|
"time": value,
|
|
},
|
|
},
|
|
Spec: api.PodSpec{
|
|
Containers: []api.Container{
|
|
{
|
|
Name: "nginx",
|
|
Image: "dockerfile/nginx",
|
|
Ports: []api.Port{{ContainerPort: 80}},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
|
|
By("submitting the pod to kubernetes")
|
|
_, err = podClient.Create(pod)
|
|
if err != nil {
|
|
Fail(fmt.Sprintf("Failed to create pod: %v", err))
|
|
}
|
|
defer func() {
|
|
// We call defer here in case there is a problem with
|
|
// the test so we can ensure that we clean up after
|
|
// ourselves
|
|
podClient.Delete(pod.Name)
|
|
}()
|
|
|
|
By("waiting for the pod to start running")
|
|
expectNoError(waitForPodRunning(c, pod.Name, 300*time.Second))
|
|
|
|
By("verifying the pod is in kubernetes")
|
|
pods, err := podClient.List(labels.SelectorFromSet(labels.Set(map[string]string{"time": value})))
|
|
if err != nil {
|
|
Fail(fmt.Sprintf("Failed to query for pods: %v", err))
|
|
}
|
|
Expect(len(pods.Items)).To(Equal(1))
|
|
|
|
pod = &pods.Items[0]
|
|
By(fmt.Sprintf("initiating port forwarding to host %s pod %s in container %s",
|
|
pod.Status.Host, pod.Name, pod.Spec.Containers[0].Name))
|
|
|
|
req := c.Get().
|
|
Prefix("proxy").
|
|
Resource("minions").
|
|
Name(pod.Status.Host).
|
|
Suffix("portForward", api.NamespaceDefault, pod.Name)
|
|
|
|
stopChan := make(chan struct{})
|
|
pf, err := portforward.New(req, clientConfig, []string{"5678:80"}, stopChan)
|
|
if err != nil {
|
|
Fail(fmt.Sprintf("Error creating port forwarder: %s", err))
|
|
}
|
|
|
|
errorChan := make(chan error)
|
|
go func() {
|
|
errorChan <- pf.ForwardPorts()
|
|
}()
|
|
|
|
// wait for listeners to start
|
|
<-pf.Ready
|
|
|
|
resp, err := http.Get("http://localhost:5678/")
|
|
if err != nil {
|
|
Fail(fmt.Sprintf("Error with http get to localhost:5678: %s", err))
|
|
}
|
|
body, err := ioutil.ReadAll(resp.Body)
|
|
if err != nil {
|
|
Fail(fmt.Sprintf("Error reading response body: %s", err))
|
|
}
|
|
|
|
titleRegex := regexp.MustCompile("<title>(.+)</title>")
|
|
matches := titleRegex.FindStringSubmatch(string(body))
|
|
if len(matches) != 2 {
|
|
Fail("Unable to locate page title in response HTML")
|
|
}
|
|
if e, a := "Welcome to nginx on Debian!", matches[1]; e != a {
|
|
Fail(fmt.Sprintf("<title>: expected '%s', got '%s'", e, a))
|
|
}
|
|
})
|
|
*/
|
|
})
|