mirror of
https://github.com/k3s-io/kubernetes.git
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220 lines
7.2 KiB
Go
220 lines
7.2 KiB
Go
/*
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Copyright 2019 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 e2enode
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import (
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"context"
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"time"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/uuid"
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"k8s.io/kubernetes/pkg/features"
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kubeletconfig "k8s.io/kubernetes/pkg/kubelet/apis/config"
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"k8s.io/kubernetes/test/e2e/common"
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"k8s.io/kubernetes/test/e2e/framework"
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e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
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testutils "k8s.io/kubernetes/test/utils"
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imageutils "k8s.io/kubernetes/test/utils/image"
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"github.com/onsi/ginkgo"
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)
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const (
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defaultObservationTimeout = time.Minute * 4
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)
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var _ = framework.KubeDescribe("StartupProbe [Serial] [Disruptive]", func() {
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f := framework.NewDefaultFramework("startup-probe-test")
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var podClient *framework.PodClient
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ginkgo.BeforeEach(func() {
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podClient = f.PodClient()
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})
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/*
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These tests are located here as they require tempSetCurrentKubeletConfig to enable the feature gate for startupProbe.
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Once the feature gate has been removed, these tests should come back to test/e2e/common/container_probe.go.
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*/
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ginkgo.Context("when a container has a startup probe", func() {
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tempSetCurrentKubeletConfig(f, func(initialConfig *kubeletconfig.KubeletConfiguration) {
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if initialConfig.FeatureGates == nil {
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initialConfig.FeatureGates = make(map[string]bool)
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}
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initialConfig.FeatureGates[string(features.StartupProbe)] = true
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})
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/*
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Release: v1.16
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Testname: Pod startup probe restart
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Description: A Pod is created with a failing startup probe. The Pod MUST be killed and restarted incrementing restart count to 1, even if liveness would succeed.
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*/
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ginkgo.It("should be restarted startup probe fails", func() {
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cmd := []string{"/bin/sh", "-c", "sleep 600"}
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livenessProbe := &v1.Probe{
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Handler: v1.Handler{
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Exec: &v1.ExecAction{
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Command: []string{"/bin/true"},
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},
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},
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InitialDelaySeconds: 15,
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FailureThreshold: 1,
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}
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startupProbe := &v1.Probe{
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Handler: v1.Handler{
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Exec: &v1.ExecAction{
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Command: []string{"/bin/false"},
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},
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},
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InitialDelaySeconds: 15,
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FailureThreshold: 3,
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}
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pod := startupPodSpec(startupProbe, nil, livenessProbe, cmd)
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common.RunLivenessTest(f, pod, 1, defaultObservationTimeout)
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})
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/*
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Release: v1.16
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Testname: Pod liveness probe delayed (long) by startup probe
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Description: A Pod is created with failing liveness and startup probes. Liveness probe MUST NOT fail until startup probe expires.
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*/
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ginkgo.It("should *not* be restarted by liveness probe because startup probe delays it", func() {
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cmd := []string{"/bin/sh", "-c", "sleep 600"}
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livenessProbe := &v1.Probe{
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Handler: v1.Handler{
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Exec: &v1.ExecAction{
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Command: []string{"/bin/false"},
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},
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},
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InitialDelaySeconds: 15,
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FailureThreshold: 1,
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}
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startupProbe := &v1.Probe{
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Handler: v1.Handler{
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Exec: &v1.ExecAction{
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Command: []string{"/bin/false"},
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},
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},
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InitialDelaySeconds: 15,
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FailureThreshold: 60,
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}
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pod := startupPodSpec(startupProbe, nil, livenessProbe, cmd)
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common.RunLivenessTest(f, pod, 0, defaultObservationTimeout)
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})
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/*
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Release: v1.16
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Testname: Pod liveness probe fails after startup success
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Description: A Pod is created with failing liveness probe and delayed startup probe that uses 'exec' command to cat /temp/health file. The Container is started by creating /tmp/startup after 10 seconds, triggering liveness probe to fail. The Pod MUST now be killed and restarted incrementing restart count to 1.
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*/
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ginkgo.It("should be restarted by liveness probe after startup probe enables it", func() {
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cmd := []string{"/bin/sh", "-c", "sleep 10; echo ok >/tmp/startup; sleep 600"}
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livenessProbe := &v1.Probe{
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Handler: v1.Handler{
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Exec: &v1.ExecAction{
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Command: []string{"/bin/false"},
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},
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},
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InitialDelaySeconds: 15,
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FailureThreshold: 1,
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}
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startupProbe := &v1.Probe{
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Handler: v1.Handler{
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Exec: &v1.ExecAction{
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Command: []string{"cat", "/tmp/startup"},
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},
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},
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InitialDelaySeconds: 15,
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FailureThreshold: 60,
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}
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pod := startupPodSpec(startupProbe, nil, livenessProbe, cmd)
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common.RunLivenessTest(f, pod, 1, defaultObservationTimeout)
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})
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/*
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Release: v1.16
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Testname: Pod readiness probe, delayed by startup probe
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Description: A Pod is created with startup and readiness probes. The Container is started by creating /tmp/startup after 45 seconds, delaying the ready state by this amount of time. This is similar to the "Pod readiness probe, with initial delay" test.
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*/
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ginkgo.It("should not be ready until startupProbe succeeds", func() {
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cmd := []string{"/bin/sh", "-c", "echo ok >/tmp/health; sleep 45; echo ok >/tmp/startup; sleep 600"}
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readinessProbe := &v1.Probe{
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Handler: v1.Handler{
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Exec: &v1.ExecAction{
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Command: []string{"cat", "/tmp/health"},
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},
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},
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InitialDelaySeconds: 0,
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}
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startupProbe := &v1.Probe{
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Handler: v1.Handler{
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Exec: &v1.ExecAction{
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Command: []string{"cat", "/tmp/startup"},
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},
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},
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InitialDelaySeconds: 0,
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FailureThreshold: 60,
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}
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p := podClient.Create(startupPodSpec(startupProbe, readinessProbe, nil, cmd))
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p, err := podClient.Get(context.TODO(), p.Name, metav1.GetOptions{})
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framework.ExpectNoError(err)
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e2epod.WaitTimeoutForPodReadyInNamespace(f.ClientSet, p.Name, f.Namespace.Name, framework.PodStartTimeout)
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p, err = podClient.Get(context.TODO(), p.Name, metav1.GetOptions{})
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framework.ExpectNoError(err)
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isReady, err := testutils.PodRunningReady(p)
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framework.ExpectNoError(err)
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framework.ExpectEqual(isReady, true, "pod should be ready")
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// We assume the pod became ready when the container became ready. This
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// is true for a single container pod.
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readyTime, err := common.GetTransitionTimeForReadyCondition(p)
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framework.ExpectNoError(err)
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startedTime, err := common.GetContainerStartedTime(p, "busybox")
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framework.ExpectNoError(err)
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framework.Logf("Container started at %v, pod became ready at %v", startedTime, readyTime)
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if readyTime.Sub(startedTime) < 40*time.Second {
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framework.Failf("Pod became ready before startupProbe succeeded")
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}
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})
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})
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})
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func startupPodSpec(startupProbe, readinessProbe, livenessProbe *v1.Probe, cmd []string) *v1.Pod {
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return &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "startup-" + string(uuid.NewUUID()),
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Labels: map[string]string{"test": "startup"},
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{
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Name: "busybox",
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Image: imageutils.GetE2EImage(imageutils.BusyBox),
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Command: cmd,
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LivenessProbe: livenessProbe,
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ReadinessProbe: readinessProbe,
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StartupProbe: startupProbe,
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},
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},
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},
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}
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}
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