444 lines
15 KiB
Go
444 lines
15 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
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import (
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"fmt"
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"time"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/kubernetes/pkg/api/v1"
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v1beta1 "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
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"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
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"k8s.io/kubernetes/pkg/controller"
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"k8s.io/kubernetes/pkg/metrics"
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"k8s.io/kubernetes/test/e2e/framework"
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. "github.com/onsi/ginkgo"
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)
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func getOrphanOptions() *v1.DeleteOptions {
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var trueVar = true
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return &v1.DeleteOptions{OrphanDependents: &trueVar}
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}
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func getNonOrphanOptions() *v1.DeleteOptions {
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var falseVar = false
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return &v1.DeleteOptions{OrphanDependents: &falseVar}
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}
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var zero = int64(0)
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var deploymentLabels = map[string]string{"app": "gc-test"}
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var podTemplateSpec = v1.PodTemplateSpec{
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ObjectMeta: v1.ObjectMeta{
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Labels: deploymentLabels,
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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: "nginx",
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Image: "gcr.io/google_containers/nginx:1.7.9",
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},
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},
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},
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}
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func newOwnerDeployment(f *framework.Framework, deploymentName string) *v1beta1.Deployment {
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replicas := int32(2)
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return &v1beta1.Deployment{
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ObjectMeta: v1.ObjectMeta{
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Name: deploymentName,
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},
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Spec: v1beta1.DeploymentSpec{
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Replicas: &replicas,
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Selector: &metav1.LabelSelector{MatchLabels: deploymentLabels},
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Strategy: v1beta1.DeploymentStrategy{
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Type: v1beta1.RollingUpdateDeploymentStrategyType,
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},
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Template: podTemplateSpec,
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},
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}
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}
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func newOwnerRC(f *framework.Framework, name string) *v1.ReplicationController {
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var replicas int32
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replicas = 2
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return &v1.ReplicationController{
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TypeMeta: metav1.TypeMeta{
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Kind: "ReplicationController",
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APIVersion: "v1",
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},
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ObjectMeta: v1.ObjectMeta{
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Namespace: f.Namespace.Name,
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Name: name,
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},
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Spec: v1.ReplicationControllerSpec{
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Replicas: &replicas,
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Selector: map[string]string{"app": "gc-test"},
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Template: &podTemplateSpec,
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},
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}
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}
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// verifyRemainingDeploymentsAndReplicaSets verifies if the number of the remaining deployment
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// and rs are deploymentNum and rsNum. It returns error if the
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// communication with the API server fails.
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func verifyRemainingDeploymentsAndReplicaSets(
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f *framework.Framework,
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clientSet clientset.Interface,
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deployment *v1beta1.Deployment,
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deploymentNum, rsNum int,
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) (bool, error) {
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var ret = true
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rs, err := clientSet.Extensions().ReplicaSets(f.Namespace.Name).List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list rs: %v", err)
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}
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if len(rs.Items) != rsNum {
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ret = false
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By(fmt.Sprintf("expected %d rs, got %d rs", rsNum, len(rs.Items)))
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}
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deployments, err := clientSet.Extensions().Deployments(f.Namespace.Name).List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list deployments: %v", err)
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}
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if len(deployments.Items) != deploymentNum {
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ret = false
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By(fmt.Sprintf("expected %d Deploymentss, got %d Deployments", deploymentNum, len(deployments.Items)))
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}
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return ret, nil
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}
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// verifyRemainingObjects verifies if the number of the remaining replication
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// controllers and pods are rcNum and podNum. It returns error if the
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// communication with the API server fails.
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func verifyRemainingObjects(f *framework.Framework, clientSet clientset.Interface, rcNum, podNum int) (bool, error) {
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rcClient := clientSet.Core().ReplicationControllers(f.Namespace.Name)
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pods, err := clientSet.Core().Pods(f.Namespace.Name).List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list pods: %v", err)
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}
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var ret = true
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if len(pods.Items) != podNum {
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ret = false
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By(fmt.Sprintf("expected %d pods, got %d pods", podNum, len(pods.Items)))
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}
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rcs, err := rcClient.List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list replication controllers: %v", err)
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}
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if len(rcs.Items) != rcNum {
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ret = false
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By(fmt.Sprintf("expected %d RCs, got %d RCs", rcNum, len(rcs.Items)))
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}
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return ret, nil
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}
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func gatherMetrics(f *framework.Framework) {
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By("Gathering metrics")
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var summary framework.TestDataSummary
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grabber, err := metrics.NewMetricsGrabber(f.ClientSet, false, false, true, false)
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if err != nil {
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framework.Logf("Failed to create MetricsGrabber. Skipping metrics gathering.")
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} else {
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received, err := grabber.Grab()
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if err != nil {
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framework.Logf("MetricsGrabber failed grab metrics. Skipping metrics gathering.")
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} else {
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summary = (*framework.MetricsForE2E)(&received)
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framework.Logf(summary.PrintHumanReadable())
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}
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}
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}
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var _ = framework.KubeDescribe("Garbage collector", func() {
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f := framework.NewDefaultFramework("gc")
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It("should delete pods created by rc when not orphaning", func() {
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clientSet := f.ClientSet
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rcClient := clientSet.Core().ReplicationControllers(f.Namespace.Name)
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podClient := clientSet.Core().Pods(f.Namespace.Name)
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rcName := "simpletest.rc"
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rc := newOwnerRC(f, rcName)
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By("create the rc")
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rc, err := rcClient.Create(rc)
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if err != nil {
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framework.Failf("Failed to create replication controller: %v", err)
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}
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// wait for rc to create some pods
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if err := wait.Poll(5*time.Second, 30*time.Second, func() (bool, error) {
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pods, err := podClient.List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list pods: %v", err)
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}
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// We intentionally don't wait the number of pods to reach
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// rc.Spec.Replicas. We want to see if the garbage collector and the
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// rc manager work properly if the rc is deleted before it reaches
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// stasis.
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if len(pods.Items) > 0 {
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return true, nil
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} else {
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return false, nil
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}
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}); err != nil {
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framework.Failf("failed to wait for the rc to create some pods: %v", err)
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}
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By("delete the rc")
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deleteOptions := getNonOrphanOptions()
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deleteOptions.Preconditions = v1.NewUIDPreconditions(string(rc.UID))
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if err := rcClient.Delete(rc.ObjectMeta.Name, deleteOptions); err != nil {
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framework.Failf("failed to delete the rc: %v", err)
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}
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By("wait for all pods to be garbage collected")
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// wait for the RCs and Pods to reach the expected numbers.
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if err := wait.Poll(5*time.Second, 60*time.Second, func() (bool, error) {
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return verifyRemainingObjects(f, clientSet, 0, 0)
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}); err != nil {
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framework.Failf("failed to wait for all pods to be deleted: %v", err)
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remainingPods, err := podClient.List(v1.ListOptions{})
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if err != nil {
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framework.Failf("failed to list pods post mortem: %v", err)
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} else {
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framework.Failf("remaining pods are: %#v", remainingPods)
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}
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}
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gatherMetrics(f)
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})
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It("should orphan pods created by rc if delete options say so", func() {
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clientSet := f.ClientSet
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rcClient := clientSet.Core().ReplicationControllers(f.Namespace.Name)
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podClient := clientSet.Core().Pods(f.Namespace.Name)
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rcName := "simpletest.rc"
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rc := newOwnerRC(f, rcName)
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replicas := int32(100)
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rc.Spec.Replicas = &replicas
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By("create the rc")
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rc, err := rcClient.Create(rc)
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if err != nil {
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framework.Failf("Failed to create replication controller: %v", err)
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}
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// wait for rc to create pods
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if err := wait.Poll(5*time.Second, 30*time.Second, func() (bool, error) {
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rc, err := rcClient.Get(rc.Name, metav1.GetOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to get rc: %v", err)
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}
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if rc.Status.Replicas == *rc.Spec.Replicas {
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return true, nil
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} else {
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return false, nil
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}
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}); err != nil {
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framework.Failf("failed to wait for the rc.Status.Replicas to reach rc.Spec.Replicas: %v", err)
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}
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By("delete the rc")
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deleteOptions := getOrphanOptions()
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deleteOptions.Preconditions = v1.NewUIDPreconditions(string(rc.UID))
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if err := rcClient.Delete(rc.ObjectMeta.Name, deleteOptions); err != nil {
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framework.Failf("failed to delete the rc: %v", err)
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}
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By("wait for the rc to be deleted")
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if err := wait.Poll(5*time.Second, 30*time.Second, func() (bool, error) {
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rcs, err := rcClient.List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list rcs: %v", err)
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}
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if len(rcs.Items) != 0 {
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return false, nil
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}
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return true, nil
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}); err != nil && err != wait.ErrWaitTimeout {
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framework.Failf("%v", err)
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}
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By("wait for 30 seconds to see if the garbage collector mistakenly deletes the pods")
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if err := wait.Poll(5*time.Second, 30*time.Second, func() (bool, error) {
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pods, err := podClient.List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list pods: %v", err)
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}
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if e, a := int(*(rc.Spec.Replicas)), len(pods.Items); e != a {
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return false, fmt.Errorf("expect %d pods, got %d pods", e, a)
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}
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return false, nil
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}); err != nil && err != wait.ErrWaitTimeout {
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framework.Failf("%v", err)
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}
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gatherMetrics(f)
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})
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It("should orphan pods created by rc if deleteOptions.OrphanDependents is nil", func() {
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clientSet := f.ClientSet
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rcClient := clientSet.Core().ReplicationControllers(f.Namespace.Name)
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podClient := clientSet.Core().Pods(f.Namespace.Name)
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rcName := "simpletest.rc"
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rc := newOwnerRC(f, rcName)
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By("create the rc")
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rc, err := rcClient.Create(rc)
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if err != nil {
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framework.Failf("Failed to create replication controller: %v", err)
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}
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// wait for rc to create some pods
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if err := wait.Poll(5*time.Second, 30*time.Second, func() (bool, error) {
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rc, err := rcClient.Get(rc.Name, metav1.GetOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to get rc: %v", err)
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}
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if rc.Status.Replicas == *rc.Spec.Replicas {
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return true, nil
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} else {
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return false, nil
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}
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}); err != nil {
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framework.Failf("failed to wait for the rc.Status.Replicas to reach rc.Spec.Replicas: %v", err)
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}
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By("delete the rc")
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deleteOptions := &v1.DeleteOptions{}
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deleteOptions.Preconditions = v1.NewUIDPreconditions(string(rc.UID))
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if err := rcClient.Delete(rc.ObjectMeta.Name, deleteOptions); err != nil {
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framework.Failf("failed to delete the rc: %v", err)
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}
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By("wait for 30 seconds to see if the garbage collector mistakenly deletes the pods")
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if err := wait.Poll(5*time.Second, 30*time.Second, func() (bool, error) {
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pods, err := podClient.List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list pods: %v", err)
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}
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if e, a := int(*(rc.Spec.Replicas)), len(pods.Items); e != a {
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return false, fmt.Errorf("expect %d pods, got %d pods", e, a)
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}
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return false, nil
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}); err != nil && err != wait.ErrWaitTimeout {
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framework.Failf("%v", err)
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}
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gatherMetrics(f)
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})
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It("should delete RS created by deployment when not orphaning", func() {
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clientSet := f.ClientSet
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deployClient := clientSet.Extensions().Deployments(f.Namespace.Name)
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rsClient := clientSet.Extensions().ReplicaSets(f.Namespace.Name)
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deploymentName := "simpletest.deployment"
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deployment := newOwnerDeployment(f, deploymentName)
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By("create the deployment")
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createdDeployment, err := deployClient.Create(deployment)
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if err != nil {
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framework.Failf("Failed to create deployment: %v", err)
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}
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// wait for deployment to create some rs
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By("Wait for the Deployment to create new ReplicaSet")
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err = wait.PollImmediate(500*time.Millisecond, 1*time.Minute, func() (bool, error) {
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rsList, err := rsClient.List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list rs: %v", err)
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}
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return len(rsList.Items) > 0, nil
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})
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if err == wait.ErrWaitTimeout {
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err = fmt.Errorf("Failed to wait for the Deployment to create some ReplicaSet: %v", err)
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}
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By("delete the deployment")
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deleteOptions := getNonOrphanOptions()
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deleteOptions.Preconditions = v1.NewUIDPreconditions(string(createdDeployment.UID))
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if err := deployClient.Delete(deployment.ObjectMeta.Name, deleteOptions); err != nil {
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framework.Failf("failed to delete the deployment: %v", err)
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}
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By("wait for all rs to be garbage collected")
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err = wait.PollImmediate(500*time.Millisecond, 1*time.Minute, func() (bool, error) {
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return verifyRemainingDeploymentsAndReplicaSets(f, clientSet, deployment, 0, 0)
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})
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if err == wait.ErrWaitTimeout {
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err = fmt.Errorf("Failed to wait for all rs to be garbage collected: %v", err)
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remainingRSs, err := rsClient.List(v1.ListOptions{})
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if err != nil {
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framework.Failf("failed to list RSs post mortem: %v", err)
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} else {
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framework.Failf("remaining rs are: %#v", remainingRSs)
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}
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}
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gatherMetrics(f)
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})
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It("should orphan RS created by deployment when deleteOptions.OrphanDependents is true", func() {
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clientSet := f.ClientSet
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deployClient := clientSet.Extensions().Deployments(f.Namespace.Name)
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rsClient := clientSet.Extensions().ReplicaSets(f.Namespace.Name)
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deploymentName := "simpletest.deployment"
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deployment := newOwnerDeployment(f, deploymentName)
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By("create the deployment")
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createdDeployment, err := deployClient.Create(deployment)
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if err != nil {
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framework.Failf("Failed to create deployment: %v", err)
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}
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// wait for deployment to create some rs
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By("Wait for the Deployment to create new ReplicaSet")
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err = wait.PollImmediate(500*time.Millisecond, 1*time.Minute, func() (bool, error) {
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rsList, err := rsClient.List(v1.ListOptions{})
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if err != nil {
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return false, fmt.Errorf("Failed to list rs: %v", err)
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}
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return len(rsList.Items) > 0, nil
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})
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if err == wait.ErrWaitTimeout {
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err = fmt.Errorf("Failed to wait for the Deployment to create some ReplicaSet: %v", err)
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}
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By("delete the deployment")
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deleteOptions := getOrphanOptions()
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deleteOptions.Preconditions = v1.NewUIDPreconditions(string(createdDeployment.UID))
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if err := deployClient.Delete(deployment.ObjectMeta.Name, deleteOptions); err != nil {
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framework.Failf("failed to delete the deployment: %v", err)
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}
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By("wait for 2 Minute to see if the garbage collector mistakenly deletes the rs")
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err = wait.PollImmediate(5*time.Second, 2*time.Minute, func() (bool, error) {
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return verifyRemainingDeploymentsAndReplicaSets(f, clientSet, deployment, 0, 1)
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})
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if err != nil {
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err = fmt.Errorf("Failed to wait to see if the garbage collecter mistakenly deletes the rs: %v", err)
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remainingRSs, err := rsClient.List(v1.ListOptions{})
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if err != nil {
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framework.Failf("failed to list RSs post mortem: %v", err)
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} else {
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framework.Failf("remaining rs post mortem: %#v", remainingRSs)
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}
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remainingDSs, err := deployClient.List(v1.ListOptions{})
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if err != nil {
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framework.Failf("failed to list Deployments post mortem: %v", err)
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} else {
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framework.Failf("remaining deployment's post mortem: %#v", remainingDSs)
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}
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}
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rs, err := clientSet.Extensions().ReplicaSets(f.Namespace.Name).List(v1.ListOptions{})
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if err != nil {
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framework.Failf("Failed to list ReplicaSet %v", err)
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}
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for _, replicaSet := range rs.Items {
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if controller.GetControllerOf(&replicaSet.ObjectMeta) != nil {
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framework.Failf("Found ReplicaSet with non nil ownerRef %v", replicaSet)
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}
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}
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gatherMetrics(f)
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})
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})
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