mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-24 14:00:19 +00:00
335 lines
12 KiB
Go
335 lines
12 KiB
Go
/*
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Copyright 2015 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 apps
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import (
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"fmt"
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"time"
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"k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/errors"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/util/uuid"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/kubernetes/pkg/controller/replication"
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"k8s.io/kubernetes/test/e2e/framework"
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imageutils "k8s.io/kubernetes/test/utils/image"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = SIGDescribe("ReplicationController", func() {
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f := framework.NewDefaultFramework("replication-controller")
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/*
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Release : v1.9
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Testname: Replication Controller, run basic image
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Description: Replication Controller MUST create a Pod with Basic Image and MUST run the service with the provided image. Image MUST be tested by dialing into the service listening through TCP, UDP and HTTP.
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*/
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framework.ConformanceIt("should serve a basic image on each replica with a public image ", func() {
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TestReplicationControllerServeImageOrFail(f, "basic", framework.ServeHostnameImage)
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})
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It("should serve a basic image on each replica with a private image", func() {
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// requires private images
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framework.SkipUnlessProviderIs("gce", "gke")
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privateimage := imageutils.ServeHostname
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privateimage.SetRegistry(imageutils.PrivateRegistry)
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TestReplicationControllerServeImageOrFail(f, "private", imageutils.GetE2EImage(privateimage))
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})
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It("should surface a failure condition on a common issue like exceeded quota", func() {
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testReplicationControllerConditionCheck(f)
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})
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It("should adopt matching pods on creation", func() {
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testRCAdoptMatchingOrphans(f)
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})
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It("should release no longer matching pods", func() {
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testRCReleaseControlledNotMatching(f)
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})
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})
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func newRC(rsName string, replicas int32, rcPodLabels map[string]string, imageName string, image string) *v1.ReplicationController {
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zero := int64(0)
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return &v1.ReplicationController{
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ObjectMeta: metav1.ObjectMeta{
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Name: rsName,
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},
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Spec: v1.ReplicationControllerSpec{
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Replicas: func(i int32) *int32 { return &i }(replicas),
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Template: &v1.PodTemplateSpec{
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ObjectMeta: metav1.ObjectMeta{
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Labels: rcPodLabels,
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},
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Spec: v1.PodSpec{
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TerminationGracePeriodSeconds: &zero,
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Containers: []v1.Container{
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{
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Name: imageName,
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Image: image,
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},
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},
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},
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},
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},
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}
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}
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// A basic test to check the deployment of an image using
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// a replication controller. The image serves its hostname
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// which is checked for each replica.
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func TestReplicationControllerServeImageOrFail(f *framework.Framework, test string, image string) {
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name := "my-hostname-" + test + "-" + string(uuid.NewUUID())
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replicas := int32(1)
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// Create a replication controller for a service
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// that serves its hostname.
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// The source for the Docker containter kubernetes/serve_hostname is
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// in contrib/for-demos/serve_hostname
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By(fmt.Sprintf("Creating replication controller %s", name))
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newRC := newRC(name, replicas, map[string]string{"name": name}, name, image)
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newRC.Spec.Template.Spec.Containers[0].Ports = []v1.ContainerPort{{ContainerPort: 9376}}
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_, err := f.ClientSet.CoreV1().ReplicationControllers(f.Namespace.Name).Create(newRC)
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Expect(err).NotTo(HaveOccurred())
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// Check that pods for the new RC were created.
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// TODO: Maybe switch PodsCreated to just check owner references.
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pods, err := framework.PodsCreated(f.ClientSet, f.Namespace.Name, name, replicas)
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Expect(err).NotTo(HaveOccurred())
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// Wait for the pods to enter the running state. Waiting loops until the pods
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// are running so non-running pods cause a timeout for this test.
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framework.Logf("Ensuring all pods for ReplicationController %q are running", name)
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running := int32(0)
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for _, pod := range pods.Items {
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if pod.DeletionTimestamp != nil {
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continue
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}
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err = f.WaitForPodRunning(pod.Name)
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if err != nil {
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updatePod, getErr := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Get(pod.Name, metav1.GetOptions{})
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if getErr == nil {
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err = fmt.Errorf("Pod %q never run (phase: %s, conditions: %+v): %v", updatePod.Name, updatePod.Status.Phase, updatePod.Status.Conditions, err)
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} else {
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err = fmt.Errorf("Pod %q never run: %v", pod.Name, err)
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}
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}
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Expect(err).NotTo(HaveOccurred())
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framework.Logf("Pod %q is running (conditions: %+v)", pod.Name, pod.Status.Conditions)
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running++
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}
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// Sanity check
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if running != replicas {
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Expect(fmt.Errorf("unexpected number of running pods: %+v", pods.Items)).NotTo(HaveOccurred())
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}
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// Verify that something is listening.
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framework.Logf("Trying to dial the pod")
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retryTimeout := 2 * time.Minute
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retryInterval := 5 * time.Second
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label := labels.SelectorFromSet(labels.Set(map[string]string{"name": name}))
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err = wait.Poll(retryInterval, retryTimeout, framework.PodProxyResponseChecker(f.ClientSet, f.Namespace.Name, label, name, true, pods).CheckAllResponses)
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if err != nil {
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framework.Failf("Did not get expected responses within the timeout period of %.2f seconds.", retryTimeout.Seconds())
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}
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}
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// 1. Create a quota restricting pods in the current namespace to 2.
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// 2. Create a replication controller that wants to run 3 pods.
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// 3. Check replication controller conditions for a ReplicaFailure condition.
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// 4. Relax quota or scale down the controller and observe the condition is gone.
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func testReplicationControllerConditionCheck(f *framework.Framework) {
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c := f.ClientSet
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namespace := f.Namespace.Name
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name := "condition-test"
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framework.Logf("Creating quota %q that allows only two pods to run in the current namespace", name)
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quota := newPodQuota(name, "2")
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_, err := c.CoreV1().ResourceQuotas(namespace).Create(quota)
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Expect(err).NotTo(HaveOccurred())
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err = wait.PollImmediate(1*time.Second, 1*time.Minute, func() (bool, error) {
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quota, err = c.CoreV1().ResourceQuotas(namespace).Get(name, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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podQuota := quota.Status.Hard[v1.ResourcePods]
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quantity := resource.MustParse("2")
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return (&podQuota).Cmp(quantity) == 0, nil
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})
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if err == wait.ErrWaitTimeout {
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err = fmt.Errorf("resource quota %q never synced", name)
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}
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Expect(err).NotTo(HaveOccurred())
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By(fmt.Sprintf("Creating rc %q that asks for more than the allowed pod quota", name))
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rc := newRC(name, 3, map[string]string{"name": name}, NginxImageName, NginxImage)
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rc, err = c.CoreV1().ReplicationControllers(namespace).Create(rc)
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Expect(err).NotTo(HaveOccurred())
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By(fmt.Sprintf("Checking rc %q has the desired failure condition set", name))
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generation := rc.Generation
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conditions := rc.Status.Conditions
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err = wait.PollImmediate(1*time.Second, 1*time.Minute, func() (bool, error) {
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rc, err = c.CoreV1().ReplicationControllers(namespace).Get(name, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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if generation > rc.Status.ObservedGeneration {
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return false, nil
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}
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conditions = rc.Status.Conditions
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cond := replication.GetCondition(rc.Status, v1.ReplicationControllerReplicaFailure)
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return cond != nil, nil
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})
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if err == wait.ErrWaitTimeout {
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err = fmt.Errorf("rc manager never added the failure condition for rc %q: %#v", name, conditions)
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}
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Expect(err).NotTo(HaveOccurred())
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By(fmt.Sprintf("Scaling down rc %q to satisfy pod quota", name))
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rc, err = framework.UpdateReplicationControllerWithRetries(c, namespace, name, func(update *v1.ReplicationController) {
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x := int32(2)
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update.Spec.Replicas = &x
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})
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Expect(err).NotTo(HaveOccurred())
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By(fmt.Sprintf("Checking rc %q has no failure condition set", name))
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generation = rc.Generation
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conditions = rc.Status.Conditions
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err = wait.PollImmediate(1*time.Second, 1*time.Minute, func() (bool, error) {
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rc, err = c.CoreV1().ReplicationControllers(namespace).Get(name, metav1.GetOptions{})
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if err != nil {
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return false, err
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}
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if generation > rc.Status.ObservedGeneration {
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return false, nil
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}
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conditions = rc.Status.Conditions
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cond := replication.GetCondition(rc.Status, v1.ReplicationControllerReplicaFailure)
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return cond == nil, nil
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})
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if err == wait.ErrWaitTimeout {
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err = fmt.Errorf("rc manager never removed the failure condition for rc %q: %#v", name, conditions)
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}
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Expect(err).NotTo(HaveOccurred())
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}
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func testRCAdoptMatchingOrphans(f *framework.Framework) {
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name := "pod-adoption"
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By(fmt.Sprintf("Given a Pod with a 'name' label %s is created", name))
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p := f.PodClient().CreateSync(&v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: name,
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Labels: map[string]string{
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"name": name,
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},
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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: name,
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Image: NginxImageName,
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},
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},
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},
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})
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By("When a replication controller with a matching selector is created")
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replicas := int32(1)
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rcSt := newRC(name, replicas, map[string]string{"name": name}, name, NginxImageName)
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rcSt.Spec.Selector = map[string]string{"name": name}
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rc, err := f.ClientSet.CoreV1().ReplicationControllers(f.Namespace.Name).Create(rcSt)
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Expect(err).NotTo(HaveOccurred())
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By("Then the orphan pod is adopted")
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err = wait.PollImmediate(1*time.Second, 1*time.Minute, func() (bool, error) {
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p2, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Get(p.Name, metav1.GetOptions{})
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// The Pod p should either be adopted or deleted by the RC
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if errors.IsNotFound(err) {
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return true, nil
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}
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Expect(err).NotTo(HaveOccurred())
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for _, owner := range p2.OwnerReferences {
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if *owner.Controller && owner.UID == rc.UID {
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// pod adopted
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return true, nil
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}
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}
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// pod still not adopted
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return false, nil
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})
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Expect(err).NotTo(HaveOccurred())
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}
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func testRCReleaseControlledNotMatching(f *framework.Framework) {
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name := "pod-release"
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By("Given a ReplicationController is created")
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replicas := int32(1)
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rcSt := newRC(name, replicas, map[string]string{"name": name}, name, NginxImageName)
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rcSt.Spec.Selector = map[string]string{"name": name}
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rc, err := f.ClientSet.CoreV1().ReplicationControllers(f.Namespace.Name).Create(rcSt)
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Expect(err).NotTo(HaveOccurred())
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By("When the matched label of one of its pods change")
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pods, err := framework.PodsCreated(f.ClientSet, f.Namespace.Name, rc.Name, replicas)
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Expect(err).NotTo(HaveOccurred())
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p := pods.Items[0]
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err = wait.PollImmediate(1*time.Second, 1*time.Minute, func() (bool, error) {
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pod, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Get(p.Name, metav1.GetOptions{})
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Expect(err).NotTo(HaveOccurred())
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pod.Labels = map[string]string{"name": "not-matching-name"}
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_, err = f.ClientSet.CoreV1().Pods(f.Namespace.Name).Update(pod)
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if err != nil && errors.IsConflict(err) {
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return false, nil
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}
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if err != nil {
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return false, err
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}
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return true, nil
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})
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Expect(err).NotTo(HaveOccurred())
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By("Then the pod is released")
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err = wait.PollImmediate(1*time.Second, 1*time.Minute, func() (bool, error) {
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p2, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Get(p.Name, metav1.GetOptions{})
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Expect(err).NotTo(HaveOccurred())
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for _, owner := range p2.OwnerReferences {
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if *owner.Controller && owner.UID == rc.UID {
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// pod still belonging to the replication controller
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return false, nil
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}
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}
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// pod already released
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return true, nil
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})
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Expect(err).NotTo(HaveOccurred())
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}
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