mirror of https://github.com/k3s-io/k3s
385 lines
18 KiB
Go
385 lines
18 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 common
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import (
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"fmt"
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"path"
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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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. "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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var _ = framework.KubeDescribe("Container Runtime", func() {
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f := framework.NewDefaultFramework("container-runtime")
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Describe("blackbox test", func() {
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Context("when starting a container that exits", func() {
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/*
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Release : v1.13
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Testname: Container Runtime, Restart Policy, Pod Phases
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Description: If the restart policy is set to ‘Always’, Pod MUST be restarted 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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framework.ConformanceIt("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: framework.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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}
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terminateContainer.Create()
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defer terminateContainer.Delete()
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By(fmt.Sprintf("Container '%s': should get the expected 'RestartCount'", testContainer.Name))
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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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}, ContainerStatusRetryTimeout, ContainerStatusPollInterval).Should(Equal(testCase.RestartCount))
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By(fmt.Sprintf("Container '%s': should get the expected 'Phase'", testContainer.Name))
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Eventually(terminateContainer.GetPhase, ContainerStatusRetryTimeout, ContainerStatusPollInterval).Should(Equal(testCase.Phase))
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By(fmt.Sprintf("Container '%s': should get the expected 'Ready' condition", testContainer.Name))
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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(fmt.Sprintf("Container '%s': should get the expected 'State'", testContainer.Name))
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Expect(GetContainerState(status.State)).To(Equal(testCase.State))
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By(fmt.Sprintf("Container '%s': should be possible to delete [NodeConformance]", testContainer.Name))
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Expect(terminateContainer.Delete()).To(Succeed())
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Eventually(terminateContainer.Present, ContainerStatusRetryTimeout, ContainerStatusPollInterval).Should(BeFalse())
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}
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})
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})
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Context("on terminated container", func() {
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rootUser := int64(0)
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nonRootUser := int64(10000)
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// Create and then terminate the container under defined PodPhase to verify if termination message matches the expected output. Lastly delete the created container.
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matchTerminationMessage := func(container v1.Container, expectedPhase v1.PodPhase, expectedMsg gomegatypes.GomegaMatcher) {
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container.Name = "termination-message-container"
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c := ConformanceContainer{
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PodClient: f.PodClient(),
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Container: 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", expectedPhase))
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Eventually(c.GetPhase, ContainerStatusRetryTimeout, ContainerStatusPollInterval).Should(Equal(expectedPhase))
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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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framework.Logf("Expected: %v to match Container's Termination Message: %v --", expectedMsg, status.State.Terminated.Message)
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Expect(status.State.Terminated.Message).Should(expectedMsg)
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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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It("should report termination message [LinuxOnly] if TerminationMessagePath is set [NodeConformance]", func() {
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// Cannot mount files in Windows Containers.
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container := v1.Container{
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Image: framework.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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matchTerminationMessage(container, v1.PodSucceeded, Equal("DONE"))
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})
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It("should report termination message [LinuxOnly] if TerminationMessagePath is set as non-root user and at a non-default path [NodeConformance]", func() {
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// Cannot mount files in Windows Containers.
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container := v1.Container{
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Image: framework.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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matchTerminationMessage(container, v1.PodSucceeded, Equal("DONE"))
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})
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It("should report termination message [LinuxOnly] from log output if TerminationMessagePolicy FallbackToLogsOnError is set [NodeConformance]", func() {
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// Cannot mount files in Windows Containers.
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container := v1.Container{
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Image: framework.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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matchTerminationMessage(container, v1.PodFailed, Equal("DONE"))
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})
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It("should report termination message [LinuxOnly] as empty when pod succeeds and TerminationMessagePolicy FallbackToLogsOnError is set [NodeConformance]", func() {
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// Cannot mount files in Windows Containers.
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container := v1.Container{
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Image: framework.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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matchTerminationMessage(container, v1.PodSucceeded, Equal(""))
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})
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It("should report termination message [LinuxOnly] from file when pod succeeds and TerminationMessagePolicy FallbackToLogsOnError is set [NodeConformance]", func() {
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// Cannot mount files in Windows Containers.
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container := v1.Container{
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Image: framework.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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matchTerminationMessage(container, v1.PodSucceeded, Equal("OK"))
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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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// Images used for ConformanceContainer 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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imagePullTest := func(image string, hasSecret bool, expectedPhase v1.PodPhase, expectedPullStatus bool, windowsImage bool) {
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command := []string{"/bin/sh", "-c", "while true; do sleep 1; done"}
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if windowsImage {
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// -t: Ping the specified host until stopped.
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command = []string{"ping", "-t", "localhost"}
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}
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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: "image-pull-test",
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Image: image,
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Command: command,
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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 hasSecret {
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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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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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// 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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}
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// We need to check container state first. The default pod status is pending, If we check pod phase first,
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// and the expected pod phase is Pending, the container status may not even show up when we check it.
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// Check container state
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if !expectedPullStatus {
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if status.State.Running == nil {
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return fmt.Errorf("expected container state: Running, got: %q",
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GetContainerState(status.State))
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}
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}
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if expectedPullStatus {
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if status.State.Waiting == nil {
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return fmt.Errorf("expected container state: Waiting, got: %q",
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GetContainerState(status.State))
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}
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reason := status.State.Waiting.Reason
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if reason != images.ErrImagePull.Error() &&
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reason != images.ErrImagePullBackOff.Error() {
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return fmt.Errorf("unexpected waiting reason: %q", reason)
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}
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}
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// Check pod phase
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phase, err := container.GetPhase()
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if err != nil {
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return fmt.Errorf("failed to get pod phase: %v", err)
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}
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if phase != expectedPhase {
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return fmt.Errorf("expected pod phase: %q, got: %q", expectedPhase, phase)
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}
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return nil
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}
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// The image registry is not stable, which sometimes causes the test to fail. Add retry mechanism to make this less flaky.
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const flakeRetry = 3
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for i := 1; i <= flakeRetry; i++ {
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var err error
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By("create the container")
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container.Create()
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By("check the container status")
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for start := time.Now(); time.Since(start) < ContainerStatusRetryTimeout; time.Sleep(ContainerStatusPollInterval) {
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if err = checkContainerStatus(); err == nil {
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break
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}
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}
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By("delete the container")
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container.Delete()
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if err == nil {
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break
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}
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if i < flakeRetry {
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framework.Logf("No.%d attempt failed: %v, retrying...", i, err)
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} else {
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framework.Failf("All %d attempts failed: %v", flakeRetry, err)
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}
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}
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}
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It("should not be able to pull image from invalid registry [NodeConformance]", func() {
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image := "invalid.com/invalid/alpine:3.1"
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imagePullTest(image, false, v1.PodPending, true, false)
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})
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It("should not be able to pull non-existing image from gcr.io [NodeConformance]", func() {
|
||
image := "k8s.gcr.io/invalid-image:invalid-tag"
|
||
imagePullTest(image, false, v1.PodPending, true, false)
|
||
})
|
||
|
||
It("should be able to pull image from gcr.io [LinuxOnly] [NodeConformance]", func() {
|
||
image := "gcr.io/google-containers/debian-base:0.4.1"
|
||
imagePullTest(image, false, v1.PodRunning, false, false)
|
||
})
|
||
|
||
It("should be able to pull image from gcr.io [NodeConformance]", func() {
|
||
framework.SkipUnlessNodeOSDistroIs("windows")
|
||
image := "gcr.io/kubernetes-e2e-test-images/windows-nanoserver:v1"
|
||
imagePullTest(image, false, v1.PodRunning, false, true)
|
||
})
|
||
|
||
It("should be able to pull image from docker hub [LinuxOnly] [NodeConformance]", func() {
|
||
image := "alpine:3.7"
|
||
imagePullTest(image, false, v1.PodRunning, false, false)
|
||
})
|
||
|
||
It("should be able to pull image from docker hub [NodeConformance]", func() {
|
||
framework.SkipUnlessNodeOSDistroIs("windows")
|
||
// TODO(claudiub): Switch to nanoserver image manifest list.
|
||
image := "e2eteam/busybox:1.29"
|
||
imagePullTest(image, false, v1.PodRunning, false, true)
|
||
})
|
||
|
||
It("should not be able to pull from private registry without secret [NodeConformance]", func() {
|
||
image := "gcr.io/authenticated-image-pulling/alpine:3.7"
|
||
imagePullTest(image, false, v1.PodPending, true, false)
|
||
})
|
||
|
||
It("should be able to pull from private registry with secret [LinuxOnly] [NodeConformance]", func() {
|
||
image := "gcr.io/authenticated-image-pulling/alpine:3.7"
|
||
imagePullTest(image, true, v1.PodRunning, false, false)
|
||
})
|
||
|
||
It("should be able to pull from private registry with secret [NodeConformance]", func() {
|
||
framework.SkipUnlessNodeOSDistroIs("windows")
|
||
image := "gcr.io/authenticated-image-pulling/windows-nanoserver:v1"
|
||
imagePullTest(image, true, v1.PodRunning, false, true)
|
||
})
|
||
})
|
||
})
|
||
})
|