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Add image white list, images in white list will be prepulled, and

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only images in white list could be used in the test. Currently only
enabled in node e2e test.
This commit is contained in:
Random-Liu 2016-09-15 14:49:14 -07:00
parent 920581d964
commit ed411c9042
16 changed files with 102 additions and 70 deletions
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21
test/e2e/common/util.go
View File

@ -16,6 +16,10 @@ limitations under the License.
package common
import (
"k8s.io/kubernetes/pkg/util/sets"
)
type Suite string
const (
@ -24,3 +28,20 @@ const (
)
var CurrentSuite Suite
// CommonImageWhiteList is the list of images used in common test. These images should be prepulled
// before a tests starts, so that the tests won't fail due image pulling flakes. Currently, this is
// only used by node e2e test.
// TODO(random-liu): Change the image puller pod to use similar mechanism.
var CommonImageWhiteList = sets.NewString(
"gcr.io/google_containers/busybox:1.24",
"gcr.io/google_containers/eptest:0.1",
"gcr.io/google_containers/liveness:e2e",
"gcr.io/google_containers/mounttest:0.7",
"gcr.io/google_containers/mounttest-user:0.3",
"gcr.io/google_containers/netexec:1.4",
"gcr.io/google_containers/nginx-slim:0.7",
"gcr.io/google_containers/serve_hostname:v1.4",
"gcr.io/google_containers/test-webserver:e2e",
"gcr.io/google_containers/hostexec:1.2",
)

26
test/e2e/framework/pods.go
View File

@ -24,12 +24,18 @@ import (
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/pkg/util/sets"
"k8s.io/kubernetes/pkg/util/wait"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
// ImageWhiteList is the images used in the current test suite. It should be initialized in test suite and
// the images in the white list should be pre-pulled in the test suite. Currently, this is only used by
// node e2e test.
var ImageWhiteList sets.String
// Convenience method for getting a pod client interface in the framework's namespace,
// possibly applying test-suite specific transformations to the pod spec, e.g. for
// node e2e pod scheduling.
@ -107,6 +113,26 @@ func (c *PodClient) mungeSpec(pod *api.Pod) {
if TestContext.NodeName != "" {
Expect(pod.Spec.NodeName).To(Or(BeZero(), Equal(TestContext.NodeName)), "Test misconfigured")
pod.Spec.NodeName = TestContext.NodeName
if !TestContext.PrepullImages {
return
}
// If prepull is enabled, munge the container spec to make sure the images are not pulled
// during the test.
for i := range pod.Spec.Containers {
c := &pod.Spec.Containers[i]
if c.ImagePullPolicy == api.PullAlways {
// If the image pull policy is PullAlways, the image doesn't need to be in
// the white list or pre-pulled, because the image is expected to be pulled
// in the test anyway.
continue
}
// If the image policy is not PullAlways, the image must be in the white list and
// pre-pulled.
Expect(ImageWhiteList.Has(c.Image)).To(BeTrue(), "Image %q is not in the white list, consider adding it to CommonImageWhiteList in test/e2e/common/util.go or NodeImageWhiteList in test/e2e_node/image_list.go", c.Image)
// Do not pull images during the tests because the images in white list should have
// been prepulled.
c.ImagePullPolicy = api.PullNever
}
}
}

3
test/e2e/framework/test_context.go
View File

@ -92,6 +92,8 @@ type NodeTestContextType struct {
EvictionHard string
// ManifestPath is the static pod manifest path.
ManifestPath string
// PrepullImages indicates whether node e2e framework should prepull images.
PrepullImages bool
}
type CloudConfig struct {
@ -183,6 +185,7 @@ func RegisterNodeFlags() {
//flag.BoolVar(&TestContext.CgroupsPerQOS, "cgroups-per-qos", false, "Enable creation of QoS cgroup hierarchy, if true top level QoS and pod cgroups are created.")
flag.StringVar(&TestContext.EvictionHard, "eviction-hard", "memory.available<250Mi,imagefs.available<10%", "The hard eviction thresholds. If set, pods get evicted when the specified resources drop below the thresholds.")
flag.StringVar(&TestContext.ManifestPath, "manifest-path", "", "The path to the static pod manifest file.")
flag.BoolVar(&TestContext.PrepullImages, "prepull-images", true, "If true, prepull images so image pull failures do not cause test failures.")
}
// Enable viper configuration management of flags.

2
test/e2e_node/apparmor_test.go
View File

@ -165,7 +165,7 @@ func createPodWithAppArmor(f *framework.Framework, profile string) *api.Pod {
Spec: api.PodSpec{
Containers: []api.Container{{
Name: "test",
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
Command: []string{"touch", "foo"},
}},
RestartPolicy: api.RestartPolicyNever,

2
test/e2e_node/cgroup_manager_test.go
View File

@ -45,7 +45,7 @@ var _ = framework.KubeDescribe("Kubelet Cgroup Manager [Skip]", func() {
RestartPolicy: api.RestartPolicyNever,
Containers: []api.Container{
{
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
Name: contName,
Command: []string{"sh", "-c", "if [ -d /tmp/memory/Burstable ] && [ -d /tmp/memory/BestEffort ]; then exit 0; else exit 1; fi"},
VolumeMounts: []api.VolumeMount{

6
test/e2e_node/container_manager_test.go
View File

@ -104,7 +104,7 @@ var _ = framework.KubeDescribe("Kubelet Container Manager [Serial]", func() {
Spec: api.PodSpec{
Containers: []api.Container{
{
Image: ImageRegistry[serveHostnameImage],
Image: "gcr.io/google_containers/serve_hostname:v1.4",
Name: podName,
},
},
@ -148,7 +148,7 @@ var _ = framework.KubeDescribe("Kubelet Container Manager [Serial]", func() {
Spec: api.PodSpec{
Containers: []api.Container{
{
Image: ImageRegistry[nginxImage],
Image: "gcr.io/google_containers/nginx-slim:0.7",
Name: podName,
Resources: api.ResourceRequirements{
Limits: api.ResourceList{
@ -189,7 +189,7 @@ var _ = framework.KubeDescribe("Kubelet Container Manager [Serial]", func() {
Spec: api.PodSpec{
Containers: []api.Container{
{
Image: ImageRegistry[testWebServer],
Image: "gcr.io/google_containers/test-webserver:e2e",
Name: podName,
Resources: api.ResourceRequirements{
Requests: api.ResourceList{

6
test/e2e_node/density_test.go
View File

@ -324,7 +324,7 @@ func runDensityBatchTest(f *framework.Framework, rc *ResourceCollector, testArg
)
// create test pod data structure
pods := newTestPods(testArg.podsNr, ImageRegistry[pauseImage], podType)
pods := newTestPods(testArg.podsNr, framework.GetPauseImageNameForHostArch(), podType)
// the controller watches the change of pod status
controller := newInformerWatchPod(f, mutex, watchTimes, podType)
@ -403,8 +403,8 @@ func runDensitySeqTest(f *framework.Framework, rc *ResourceCollector, testArg de
podType = "density_test_pod"
sleepBeforeCreatePods = 30 * time.Second
)
bgPods := newTestPods(testArg.bgPodsNr, ImageRegistry[pauseImage], "background_pod")
testPods := newTestPods(testArg.podsNr, ImageRegistry[pauseImage], podType)
bgPods := newTestPods(testArg.bgPodsNr, framework.GetPauseImageNameForHostArch(), "background_pod")
testPods := newTestPods(testArg.podsNr, framework.GetPauseImageNameForHostArch(), podType)
By("Creating a batch of background pods")

4
test/e2e_node/disk_eviction_test.go
View File

@ -84,7 +84,7 @@ var _ = framework.KubeDescribe("Kubelet Eviction Manager [Serial] [Disruptive]",
RestartPolicy: api.RestartPolicyNever,
Containers: []api.Container{
{
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
Name: busyPodName,
// Filling the disk
Command: []string{"sh", "-c",
@ -190,7 +190,7 @@ func createIdlePod(podName string, podClient *framework.PodClient) {
RestartPolicy: api.RestartPolicyNever,
Containers: []api.Container{
{
Image: ImageRegistry[pauseImage],
Image: framework.GetPauseImageNameForHostArch(),
Name: podName,
},
},

3
test/e2e_node/e2e_node_suite_test.go
View File

@ -47,7 +47,6 @@ import (
var e2es *services.E2EServices
var prePullImages = flag.Bool("prepull-images", true, "If true, prepull images so image pull failures do not cause test failures.")
var runServicesMode = flag.Bool("run-services-mode", false, "If true, only run services (etcd, apiserver) in current process, and not run test.")
func init() {
@ -94,7 +93,7 @@ var _ = SynchronizedBeforeSuite(func() []byte {
}
// Pre-pull the images tests depend on so we can fail immediately if there is an image pull issue
// This helps with debugging test flakes since it is hard to tell when a test failure is due to image pulling.
if *prePullImages {
if framework.TestContext.PrepullImages {
glog.Infof("Pre-pulling images so that they are cached for the tests.")
err := PrePullAllImages()
Expect(err).ShouldNot(HaveOccurred())

4
test/e2e_node/image_conformance_test.go
View File

@ -36,8 +36,8 @@ var _ = Describe("Image Container Conformance Test", func() {
var conformImages []ConformanceImage
BeforeEach(func() {
existImageTags := []string{
NoPullImageRegistry[pullTestExecHealthz],
NoPullImageRegistry[pullTestAlpineWithBash],
"gcr.io/google_containers/exechealthz:1.0",
"gcr.io/google_containers/alpine-with-bash:1.0",
}
for _, existImageTag := range existImageTags {
conformImage, _ := NewConformanceImage("docker", existImageTag)

63
test/e2e_node/image_list.go
View File

@ -23,6 +23,8 @@ import (
"github.com/golang/glog"
"k8s.io/kubernetes/pkg/util/sets"
commontest "k8s.io/kubernetes/test/e2e/common"
"k8s.io/kubernetes/test/e2e/framework"
)
@ -31,57 +33,33 @@ const (
maxImagePullRetries = 5
// Sleep duration between image pull retry attempts.
imagePullRetryDelay = time.Second
busyBoxImage = iota
epTestImage
hostExecImage
livenessImage
mountTestImage5
mountTestImage6
mountTestImage7
mountTestUserImage
netExecImage
nginxImage
pauseImage
serveHostnameImage
testWebServer
// Images just used for explicitly testing pulling of images
pullTestAlpine
pullTestAlpineWithBash
pullTestAuthenticatedAlpine
pullTestExecHealthz
)
var ImageRegistry = map[int]string{
busyBoxImage: "gcr.io/google_containers/busybox:1.24",
epTestImage: "gcr.io/google_containers/eptest:0.1",
hostExecImage: "gcr.io/google_containers/hostexec:1.2",
livenessImage: "gcr.io/google_containers/liveness:e2e",
mountTestImage7: "gcr.io/google_containers/mounttest:0.7",
mountTestUserImage: "gcr.io/google_containers/mounttest-user:0.3",
netExecImage: "gcr.io/google_containers/netexec:1.4",
nginxImage: "gcr.io/google_containers/nginx-slim:0.7",
pauseImage: framework.GetPauseImageNameForHostArch(),
serveHostnameImage: "gcr.io/google_containers/serve_hostname:v1.4",
testWebServer: "gcr.io/google_containers/test-webserver:e2e",
// NodeImageWhiteList is a list of images used in node e2e test. These images will be prepulled
// before test running so that the image pulling won't fail in actual test.
var NodeImageWhiteList = sets.NewString(
"google/cadvisor:latest",
"gcr.io/google-containers/stress:v1",
"gcr.io/google_containers/busybox:1.24",
"gcr.io/google_containers/nginx-slim:0.7",
"gcr.io/google_containers/serve_hostname:v1.4",
framework.GetPauseImageNameForHostArch(),
)
func init() {
// Union NodeImageWhiteList and CommonImageWhiteList into the framework image white list.
framework.ImageWhiteList = NodeImageWhiteList.Union(commontest.CommonImageWhiteList)
}
// These are used by tests that explicitly test the ability to pull images
var NoPullImageRegistry = map[int]string{
pullTestExecHealthz: "gcr.io/google_containers/exechealthz:1.0",
pullTestAlpine: "alpine:3.1",
pullTestAlpineWithBash: "gcr.io/google_containers/alpine-with-bash:1.0",
pullTestAuthenticatedAlpine: "gcr.io/authenticated-image-pulling/alpine:3.1",
}
// Pre-fetch all images tests depend on so that we don't fail in an actual test
// Pre-fetch all images tests depend on so that we don't fail in an actual test.
func PrePullAllImages() error {
usr, err := user.Current()
if err != nil {
return err
}
for _, image := range ImageRegistry {
images := framework.ImageWhiteList.List()
glog.V(4).Infof("Pre-pulling images %+v", images)
for _, image := range images {
var (
err error
output []byte
@ -90,6 +68,7 @@ func PrePullAllImages() error {
if i > 0 {
time.Sleep(imagePullRetryDelay)
}
// TODO(random-liu): Use docker client to get rid of docker binary dependency.
if output, err = exec.Command("docker", "pull", image).CombinedOutput(); err == nil {
break
}

8
test/e2e_node/kubelet_test.go
View File

@ -55,7 +55,7 @@ var _ = framework.KubeDescribe("Kubelet", func() {
RestartPolicy: api.RestartPolicyNever,
Containers: []api.Container{
{
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
Name: podName,
Command: []string{"sh", "-c", "echo 'Hello World' ; sleep 240"},
},
@ -89,7 +89,7 @@ var _ = framework.KubeDescribe("Kubelet", func() {
RestartPolicy: api.RestartPolicyNever,
Containers: []api.Container{
{
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
Name: podName,
Command: []string{"/bin/false"},
},
@ -136,7 +136,7 @@ var _ = framework.KubeDescribe("Kubelet", func() {
RestartPolicy: api.RestartPolicyNever,
Containers: []api.Container{
{
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
Name: podName,
Command: []string{"sh", "-c", "echo test > /file; sleep 240"},
SecurityContext: &api.SecurityContext{
@ -221,7 +221,7 @@ func createSummaryTestPods(podClient *framework.PodClient, podNamePrefix string,
RestartPolicy: api.RestartPolicyNever,
Containers: []api.Container{
{
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
Command: []string{"sh", "-c", "while true; do echo 'hello world' | tee /test-empty-dir-mnt/file ; sleep 1; done"},
Name: podName + containerSuffix,
VolumeMounts: []api.VolumeMount{

2
test/e2e_node/memory_eviction_test.go
View File

@ -116,7 +116,7 @@ var _ = framework.KubeDescribe("MemoryEviction [Slow] [Serial] [Disruptive]", fu
RestartPolicy: api.RestartPolicyNever,
Containers: []api.Container{
{
Image: ImageRegistry[pauseImage],
Image: framework.GetPauseImageNameForHostArch(),
Name: podName,
},
},

5
test/e2e_node/mirror_pod_test.go
View File

@ -44,7 +44,8 @@ var _ = framework.KubeDescribe("MirrorPod", func() {
mirrorPodName = staticPodName + "-" + framework.TestContext.NodeName
By("create the static pod")
err := createStaticPod(framework.TestContext.ManifestPath, staticPodName, ns, ImageRegistry[nginxImage], api.RestartPolicyAlways)
err := createStaticPod(framework.TestContext.ManifestPath, staticPodName, ns,
"gcr.io/google_containers/nginx-slim:0.7", api.RestartPolicyAlways)
Expect(err).ShouldNot(HaveOccurred())
By("wait for the mirror pod to be running")
@ -59,7 +60,7 @@ var _ = framework.KubeDescribe("MirrorPod", func() {
uid := pod.UID
By("update the static pod container image")
image := ImageRegistry[pauseImage]
image := framework.GetPauseImageNameForHostArch()
err = createStaticPod(framework.TestContext.ManifestPath, staticPodName, ns, image, api.RestartPolicyAlways)
Expect(err).ShouldNot(HaveOccurred())

2
test/e2e_node/resource_usage_test.go
View File

@ -139,7 +139,7 @@ func runResourceUsageTest(f *framework.Framework, rc *ResourceCollector, testArg
// sleep for an interval here to measure steady data
sleepAfterCreatePods = 10 * time.Second
)
pods := newTestPods(testArg.podsNr, ImageRegistry[pauseImage], "test_pod")
pods := newTestPods(testArg.podsNr, framework.GetPauseImageNameForHostArch(), "test_pod")
rc.Start()
// Explicitly delete pods to prevent namespace controller cleanning up timeout

15
test/e2e_node/runtime_conformance_test.go
View File

@ -45,7 +45,7 @@ var _ = framework.KubeDescribe("Container Runtime Conformance Test", func() {
restartCountVolumeName := "restart-count"
restartCountVolumePath := "/restart-count"
testContainer := api.Container{
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
VolumeMounts: []api.VolumeMount{
{
MountPath: restartCountVolumePath,
@ -136,7 +136,7 @@ while true; do sleep 1; done
c := ConformanceContainer{
PodClient: f.PodClient(),
Container: api.Container{
Image: ImageRegistry[busyBoxImage],
Image: "gcr.io/google_containers/busybox:1.24",
Name: name,
Command: []string{"/bin/sh", "-c"},
Args: []string{fmt.Sprintf("/bin/echo -n %s > %s", terminationMessage, terminationMessagePath)},
@ -185,6 +185,9 @@ while true; do sleep 1; done
Data: map[string][]byte{api.DockerConfigJsonKey: []byte(auth)},
Type: api.SecretTypeDockerConfigJson,
}
// The following images are not added into NodeImageWhiteList, because this test is
// testing image pulling, these images don't need to be prepulled. The ImagePullPolicy
// is api.PullAlways, so it won't be blocked by framework image white list check.
for _, testCase := range []struct {
description string
image string
@ -206,25 +209,25 @@ while true; do sleep 1; done
},
{
description: "should be able to pull image from gcr.io",
image: NoPullImageRegistry[pullTestAlpineWithBash],
image: "gcr.io/google_containers/alpine-with-bash:1.0",
phase: api.PodRunning,
waiting: false,
},
{
description: "should be able to pull image from docker hub",
image: NoPullImageRegistry[pullTestAlpine],
image: "alpine:3.1",
phase: api.PodRunning,
waiting: false,
},
{
description: "should not be able to pull from private registry without secret",
image: NoPullImageRegistry[pullTestAuthenticatedAlpine],
image: "gcr.io/authenticated-image-pulling/alpine:3.1",
phase: api.PodPending,
waiting: true,
},
{
description: "should be able to pull from private registry with secret",
image: NoPullImageRegistry[pullTestAuthenticatedAlpine],
image: "gcr.io/authenticated-image-pulling/alpine:3.1",
secret: true,
phase: api.PodRunning,
waiting: false,