d724e979cd
None of these tests actually run as part of e2e testing, which is the only way conformance tests are kicked off. They should not be included as part of the conformance suite unless they live in test/e2e/common
415 lines
17 KiB
Go
415 lines
17 KiB
Go
/*
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Copyright 2016 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_node
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import (
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"path/filepath"
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"time"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/util/uuid"
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"k8s.io/kubernetes/pkg/kubelet/images"
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"k8s.io/kubernetes/test/e2e/framework"
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"k8s.io/kubernetes/test/e2e_node/services"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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gomegatypes "github.com/onsi/gomega/types"
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)
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const (
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consistentCheckTimeout = time.Second * 5
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retryTimeout = time.Minute * 5
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pollInterval = time.Second * 1
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)
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var _ = framework.KubeDescribe("Container Runtime Conformance Test", func() {
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f := framework.NewDefaultFramework("runtime-conformance")
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Describe("container runtime conformance blackbox test", func() {
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Context("when starting a container that exits", func() {
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/*
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Release : v1.9
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Testname: Container Runtime, restart policy
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Description: If the restart policy is set to ‘Always’, Pod MUST be started when terminated, If restart policy is ‘OnFailure’, Pod MUST be started only if it is terminated with non-zero exit code. If the restart policy is ‘Never’, Pod MUST never be restarted. All these three test cases MUST verify the restart counts accordingly.
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*/
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It("it should run with the expected status [NodeConformance]", func() {
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restartCountVolumeName := "restart-count"
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restartCountVolumePath := "/restart-count"
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testContainer := v1.Container{
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Image: busyboxImage,
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VolumeMounts: []v1.VolumeMount{
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{
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MountPath: restartCountVolumePath,
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Name: restartCountVolumeName,
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},
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},
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}
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testVolumes := []v1.Volume{
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{
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Name: restartCountVolumeName,
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VolumeSource: v1.VolumeSource{
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EmptyDir: &v1.EmptyDirVolumeSource{Medium: v1.StorageMediumMemory},
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},
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},
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}
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testCases := []struct {
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Name string
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RestartPolicy v1.RestartPolicy
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Phase v1.PodPhase
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State ContainerState
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RestartCount int32
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Ready bool
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}{
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{"terminate-cmd-rpa", v1.RestartPolicyAlways, v1.PodRunning, ContainerStateRunning, 2, true},
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{"terminate-cmd-rpof", v1.RestartPolicyOnFailure, v1.PodSucceeded, ContainerStateTerminated, 1, false},
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{"terminate-cmd-rpn", v1.RestartPolicyNever, v1.PodFailed, ContainerStateTerminated, 0, false},
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}
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for _, testCase := range testCases {
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// It failed at the 1st run, then succeeded at 2nd run, then run forever
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cmdScripts := `
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f=%s
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count=$(echo 'hello' >> $f ; wc -l $f | awk {'print $1'})
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if [ $count -eq 1 ]; then
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exit 1
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fi
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if [ $count -eq 2 ]; then
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exit 0
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fi
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while true; do sleep 1; done
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`
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tmpCmd := fmt.Sprintf(cmdScripts, path.Join(restartCountVolumePath, "restartCount"))
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testContainer.Name = testCase.Name
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testContainer.Command = []string{"sh", "-c", tmpCmd}
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terminateContainer := ConformanceContainer{
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PodClient: f.PodClient(),
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Container: testContainer,
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RestartPolicy: testCase.RestartPolicy,
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Volumes: testVolumes,
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PodSecurityContext: &v1.PodSecurityContext{
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SELinuxOptions: &v1.SELinuxOptions{
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Level: "s0",
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},
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},
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}
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terminateContainer.Create()
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defer terminateContainer.Delete()
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By("it should get the expected 'RestartCount'")
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Eventually(func() (int32, error) {
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status, err := terminateContainer.GetStatus()
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return status.RestartCount, err
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}, retryTimeout, pollInterval).Should(Equal(testCase.RestartCount))
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By("it should get the expected 'Phase'")
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Eventually(terminateContainer.GetPhase, retryTimeout, pollInterval).Should(Equal(testCase.Phase))
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By("it should get the expected 'Ready' condition")
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Expect(terminateContainer.IsReady()).Should(Equal(testCase.Ready))
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status, err := terminateContainer.GetStatus()
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Expect(err).ShouldNot(HaveOccurred())
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By("it should get the expected 'State'")
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Expect(GetContainerState(status.State)).To(Equal(testCase.State))
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By("it should be possible to delete [NodeConformance]")
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Expect(terminateContainer.Delete()).To(Succeed())
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Eventually(terminateContainer.Present, retryTimeout, pollInterval).Should(BeFalse())
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}
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})
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rootUser := int64(0)
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nonRootUser := int64(10000)
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for _, testCase := range []struct {
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name string
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container v1.Container
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phase v1.PodPhase
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message gomegatypes.GomegaMatcher
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}{
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{
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name: "if TerminationMessagePath is set [NodeConformance]",
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container: v1.Container{
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Image: busyboxImage,
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Command: []string{"/bin/sh", "-c"},
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Args: []string{"/bin/echo -n DONE > /dev/termination-log"},
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TerminationMessagePath: "/dev/termination-log",
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SecurityContext: &v1.SecurityContext{
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RunAsUser: &rootUser,
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},
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},
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phase: v1.PodSucceeded,
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message: Equal("DONE"),
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},
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{
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name: "if TerminationMessagePath is set as non-root user and at a non-default path [NodeConformance]",
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container: v1.Container{
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Image: busyboxImage,
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Command: []string{"/bin/sh", "-c"},
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Args: []string{"/bin/echo -n DONE > /dev/termination-custom-log"},
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TerminationMessagePath: "/dev/termination-custom-log",
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SecurityContext: &v1.SecurityContext{
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RunAsUser: &nonRootUser,
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},
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},
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phase: v1.PodSucceeded,
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message: Equal("DONE"),
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},
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{
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name: "from log output if TerminationMessagePolicy FallbackToLogOnError is set [NodeConformance]",
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container: v1.Container{
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Image: busyboxImage,
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Command: []string{"/bin/sh", "-c"},
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Args: []string{"/bin/echo -n DONE; /bin/false"},
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TerminationMessagePath: "/dev/termination-log",
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TerminationMessagePolicy: v1.TerminationMessageFallbackToLogsOnError,
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},
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phase: v1.PodFailed,
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message: Equal("DONE\n"),
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},
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{
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name: "as empty when pod succeeds and TerminationMessagePolicy FallbackToLogOnError is set [NodeConformance]",
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container: v1.Container{
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Image: busyboxImage,
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Command: []string{"/bin/sh", "-c"},
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Args: []string{"/bin/echo DONE; /bin/true"},
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TerminationMessagePath: "/dev/termination-log",
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TerminationMessagePolicy: v1.TerminationMessageFallbackToLogsOnError,
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},
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phase: v1.PodSucceeded,
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message: Equal(""),
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},
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{
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name: "from file when pod succeeds and TerminationMessagePolicy FallbackToLogOnError is set [NodeConformance]",
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container: v1.Container{
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Image: busyboxImage,
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Command: []string{"/bin/sh", "-c"},
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Args: []string{"/bin/echo -n OK > /dev/termination-log; /bin/echo DONE; /bin/true"},
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TerminationMessagePath: "/dev/termination-log",
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TerminationMessagePolicy: v1.TerminationMessageFallbackToLogsOnError,
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},
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phase: v1.PodSucceeded,
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message: Equal("OK"),
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},
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} {
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It(fmt.Sprintf("should report termination message %s", testCase.name), func() {
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testCase.container.Name = "termination-message-container"
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c := ConformanceContainer{
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PodClient: f.PodClient(),
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Container: testCase.container,
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RestartPolicy: v1.RestartPolicyNever,
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}
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By("create the container")
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c.Create()
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defer c.Delete()
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By(fmt.Sprintf("wait for the container to reach %s", testCase.phase))
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Eventually(c.GetPhase, retryTimeout, pollInterval).Should(Equal(testCase.phase))
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By("get the container status")
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status, err := c.GetStatus()
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Expect(err).NotTo(HaveOccurred())
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By("the container should be terminated")
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Expect(GetContainerState(status.State)).To(Equal(ContainerStateTerminated))
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By("the termination message should be set")
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Expect(status.State.Terminated.Message).Should(testCase.message)
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By("delete the container")
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Expect(c.Delete()).To(Succeed())
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})
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}
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})
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Context("when running a container with a new image", func() {
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// The service account only has pull permission
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auth := `
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{
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"auths": {
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"https://gcr.io": {
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"auth": "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",
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"email": "image-pulling@authenticated-image-pulling.iam.gserviceaccount.com"
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}
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}
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}`
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secret := &v1.Secret{
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Data: map[string][]byte{v1.DockerConfigJsonKey: []byte(auth)},
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Type: v1.SecretTypeDockerConfigJson,
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}
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// The following images are not added into NodeImageWhiteList, because this test is
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// testing image pulling, these images don't need to be prepulled. The ImagePullPolicy
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// is v1.PullAlways, so it won't be blocked by framework image white list check.
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for _, testCase := range []struct {
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description string
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image string
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secret bool
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credentialProvider bool
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phase v1.PodPhase
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waiting bool
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}{
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{
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description: "should not be able to pull image from invalid registry",
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image: "invalid.com/invalid/alpine:3.1",
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phase: v1.PodPending,
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waiting: true,
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},
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{
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description: "should not be able to pull non-existing image from gcr.io",
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image: "k8s.gcr.io/invalid-image:invalid-tag",
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phase: v1.PodPending,
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waiting: true,
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},
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{
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description: "should be able to pull image from gcr.io",
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image: "k8s.gcr.io/alpine-with-bash:1.0",
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phase: v1.PodRunning,
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waiting: false,
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},
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{
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description: "should be able to pull image from docker hub",
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image: "alpine:3.1",
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phase: v1.PodRunning,
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waiting: false,
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},
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{
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description: "should not be able to pull from private registry without secret",
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image: "gcr.io/authenticated-image-pulling/alpine:3.1",
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phase: v1.PodPending,
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waiting: true,
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},
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{
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description: "should be able to pull from private registry with secret",
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image: "gcr.io/authenticated-image-pulling/alpine:3.1",
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secret: true,
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phase: v1.PodRunning,
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waiting: false,
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},
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{
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description: "should be able to pull from private registry with credential provider",
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image: "gcr.io/authenticated-image-pulling/alpine:3.1",
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credentialProvider: true,
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phase: v1.PodRunning,
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waiting: false,
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},
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} {
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testCase := testCase
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It(testCase.description+" [NodeConformance]", func() {
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name := "image-pull-test"
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command := []string{"/bin/sh", "-c", "while true; do sleep 1; done"}
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container := ConformanceContainer{
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PodClient: f.PodClient(),
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Container: v1.Container{
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Name: name,
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Image: testCase.image,
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Command: command,
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// PullAlways makes sure that the image will always be pulled even if it is present before the test.
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ImagePullPolicy: v1.PullAlways,
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},
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RestartPolicy: v1.RestartPolicyNever,
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}
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if testCase.secret {
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secret.Name = "image-pull-secret-" + string(uuid.NewUUID())
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By("create image pull secret")
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_, err := f.ClientSet.CoreV1().Secrets(f.Namespace.Name).Create(secret)
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Expect(err).NotTo(HaveOccurred())
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defer f.ClientSet.CoreV1().Secrets(f.Namespace.Name).Delete(secret.Name, nil)
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container.ImagePullSecrets = []string{secret.Name}
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}
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if testCase.credentialProvider {
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configFile := filepath.Join(services.KubeletRootDirectory, "config.json")
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err := ioutil.WriteFile(configFile, []byte(auth), 0644)
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Expect(err).NotTo(HaveOccurred())
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defer os.Remove(configFile)
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}
|
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// checkContainerStatus checks whether the container status matches expectation.
|
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checkContainerStatus := func() error {
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status, err := container.GetStatus()
|
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if err != nil {
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return fmt.Errorf("failed to get container status: %v", err)
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}
|
||
// We need to check container state first. The default pod status is pending, If we check
|
||
// pod phase first, and the expected pod phase is Pending, the container status may not
|
||
// even show up when we check it.
|
||
// Check container state
|
||
if !testCase.waiting {
|
||
if status.State.Running == nil {
|
||
return fmt.Errorf("expected container state: Running, got: %q",
|
||
GetContainerState(status.State))
|
||
}
|
||
}
|
||
if testCase.waiting {
|
||
if status.State.Waiting == nil {
|
||
return fmt.Errorf("expected container state: Waiting, got: %q",
|
||
GetContainerState(status.State))
|
||
}
|
||
reason := status.State.Waiting.Reason
|
||
if reason != images.ErrImagePull.Error() &&
|
||
reason != images.ErrImagePullBackOff.Error() {
|
||
return fmt.Errorf("unexpected waiting reason: %q", reason)
|
||
}
|
||
}
|
||
// Check pod phase
|
||
phase, err := container.GetPhase()
|
||
if err != nil {
|
||
return fmt.Errorf("failed to get pod phase: %v", err)
|
||
}
|
||
if phase != testCase.phase {
|
||
return fmt.Errorf("expected pod phase: %q, got: %q", testCase.phase, phase)
|
||
}
|
||
return nil
|
||
}
|
||
// The image registry is not stable, which sometimes causes the test to fail. Add retry mechanism to make this
|
||
// less flaky.
|
||
const flakeRetry = 3
|
||
for i := 1; i <= flakeRetry; i++ {
|
||
var err error
|
||
By("create the container")
|
||
container.Create()
|
||
By("check the container status")
|
||
for start := time.Now(); time.Since(start) < retryTimeout; time.Sleep(pollInterval) {
|
||
if err = checkContainerStatus(); err == nil {
|
||
break
|
||
}
|
||
}
|
||
By("delete the container")
|
||
container.Delete()
|
||
if err == nil {
|
||
break
|
||
}
|
||
if i < flakeRetry {
|
||
framework.Logf("No.%d attempt failed: %v, retrying...", i, err)
|
||
} else {
|
||
framework.Failf("All %d attempts failed: %v", flakeRetry, err)
|
||
}
|
||
}
|
||
})
|
||
}
|
||
})
|
||
})
|
||
})
|