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deployment.go
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deployment.go
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/*
Copyright 2015 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package e2e
import (
"fmt"
"math/rand"
"time"
"github.com/davecgh/go-spew/spew"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/apimachinery/pkg/watch"
"k8s.io/kubernetes/pkg/api/v1"
extensionsinternal "k8s.io/kubernetes/pkg/apis/extensions"
extensions "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
extensionsclient "k8s.io/kubernetes/pkg/client/clientset_generated/clientset/typed/extensions/v1beta1"
"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/controller"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
"k8s.io/kubernetes/pkg/kubectl"
"k8s.io/kubernetes/pkg/util"
"k8s.io/kubernetes/test/e2e/framework"
testutil "k8s.io/kubernetes/test/utils"
)
const (
dRetryPeriod = 2 * time.Second
dRetryTimeout = 5 * time.Minute
// nginxImage defined in kubectl.go
nginxImageName = "nginx"
redisImage = "gcr.io/k8s-testimages/redis:e2e"
redisImageName = "redis"
)
var (
nilRs *extensions.ReplicaSet
)
var _ = framework.KubeDescribe("Deployment", func() {
var ns string
var c clientset.Interface
AfterEach(func() {
failureTrap(c, ns)
})
f := framework.NewDefaultFramework("deployment")
BeforeEach(func() {
c = f.ClientSet
ns = f.Namespace.Name
})
It("deployment reaping should cascade to its replica sets and pods", func() {
testDeleteDeployment(f)
})
It("RollingUpdateDeployment should delete old pods and create new ones", func() {
testRollingUpdateDeployment(f)
})
It("RecreateDeployment should delete old pods and create new ones", func() {
testRecreateDeployment(f)
})
It("deployment should delete old replica sets", func() {
testDeploymentCleanUpPolicy(f)
})
It("deployment should support rollover", func() {
testRolloverDeployment(f)
})
It("paused deployment should be ignored by the controller", func() {
testPausedDeployment(f)
})
It("deployment should support rollback", func() {
testRollbackDeployment(f)
})
It("deployment should support rollback when there's replica set with no revision", func() {
testRollbackDeploymentRSNoRevision(f)
})
It("deployment should label adopted RSs and pods", func() {
testDeploymentLabelAdopted(f)
})
It("paused deployment should be able to scale", func() {
testScalePausedDeployment(f)
})
It("scaled rollout deployment should not block on annotation check", func() {
testScaledRolloutDeployment(f)
})
It("overlapping deployment should not fight with each other", func() {
testOverlappingDeployment(f)
})
It("lack of progress should be reported in the deployment status", func() {
testFailedDeployment(f)
})
It("iterative rollouts should eventually progress", func() {
testIterativeDeployments(f)
})
It("test Deployment ReplicaSet orphaning and adoption regarding controllerRef", func() {
testDeploymentsControllerRef(f)
})
It("deployment can avoid hash collisions", func() {
testDeploymentHashCollisionAvoidance(f)
})
// TODO: add tests that cover deployment.Spec.MinReadySeconds once we solved clock-skew issues
// See https://github.com/kubernetes/kubernetes/issues/29229
})
func failureTrap(c clientset.Interface, ns string) {
deployments, err := c.Extensions().Deployments(ns).List(metav1.ListOptions{LabelSelector: labels.Everything().String()})
if err != nil {
framework.Logf("Could not list Deployments in namespace %q: %v", ns, err)
return
}
for i := range deployments.Items {
d := deployments.Items[i]
framework.Logf(spew.Sprintf("Deployment %q:\n%+v\n", d.Name, d))
_, allOldRSs, newRS, err := deploymentutil.GetAllReplicaSets(&d, c)
if err != nil {
framework.Logf("Could not list ReplicaSets for Deployment %q: %v", d.Name, err)
return
}
testutil.LogReplicaSetsOfDeployment(&d, allOldRSs, newRS, framework.Logf)
rsList := allOldRSs
if newRS != nil {
rsList = append(rsList, newRS)
}
testutil.LogPodsOfDeployment(c, &d, rsList, framework.Logf)
}
}
func intOrStrP(num int) *intstr.IntOrString {
intstr := intstr.FromInt(num)
return &intstr
}
func newDeploymentRollback(name string, annotations map[string]string, revision int64) *extensions.DeploymentRollback {
return &extensions.DeploymentRollback{
Name: name,
UpdatedAnnotations: annotations,
RollbackTo: extensions.RollbackConfig{Revision: revision},
}
}
// checkDeploymentRevision checks if the input deployment's and its new replica set's revision and images are as expected.
func checkDeploymentRevision(c clientset.Interface, ns, deploymentName, revision, imageName, image string) (*extensions.Deployment, *extensions.ReplicaSet) {
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
// Check revision of the new replica set of this deployment
newRS, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(newRS).NotTo(Equal(nilRs))
Expect(newRS.Annotations).NotTo(Equal(nil))
Expect(newRS.Annotations[deploymentutil.RevisionAnnotation]).Should(Equal(revision))
// Check revision of This deployment
Expect(deployment.Annotations).NotTo(Equal(nil))
Expect(deployment.Annotations[deploymentutil.RevisionAnnotation]).Should(Equal(revision))
if len(imageName) > 0 {
// Check the image the new replica set creates
Expect(newRS.Spec.Template.Spec.Containers[0].Name).Should(Equal(imageName))
Expect(newRS.Spec.Template.Spec.Containers[0].Image).Should(Equal(image))
// Check the image the deployment creates
Expect(deployment.Spec.Template.Spec.Containers[0].Name).Should(Equal(imageName))
Expect(deployment.Spec.Template.Spec.Containers[0].Image).Should(Equal(image))
}
return deployment, newRS
}
func stopDeployment(c clientset.Interface, internalClient internalclientset.Interface, ns, deploymentName string) {
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
framework.Logf("Deleting deployment %s", deploymentName)
reaper, err := kubectl.ReaperFor(extensionsinternal.Kind("Deployment"), internalClient)
Expect(err).NotTo(HaveOccurred())
timeout := 1 * time.Minute
err = reaper.Stop(ns, deployment.Name, timeout, metav1.NewDeleteOptions(0))
Expect(err).NotTo(HaveOccurred())
framework.Logf("Ensuring deployment %s was deleted", deploymentName)
_, err = c.Extensions().Deployments(ns).Get(deployment.Name, metav1.GetOptions{})
Expect(err).To(HaveOccurred())
Expect(errors.IsNotFound(err)).To(BeTrue())
framework.Logf("Ensuring deployment %s's RSes were deleted", deploymentName)
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
Expect(err).NotTo(HaveOccurred())
options := metav1.ListOptions{LabelSelector: selector.String()}
rss, err := c.Extensions().ReplicaSets(ns).List(options)
Expect(err).NotTo(HaveOccurred())
Expect(rss.Items).Should(HaveLen(0))
framework.Logf("Ensuring deployment %s's Pods were deleted", deploymentName)
var pods *v1.PodList
if err := wait.PollImmediate(time.Second, timeout, func() (bool, error) {
pods, err = c.Core().Pods(ns).List(options)
if err != nil {
return false, err
}
// Pods may be created by overlapping deployments right after this deployment is deleted, ignore them
if len(pods.Items) == 0 {
return true, nil
}
return false, nil
}); err != nil {
framework.Failf("Err : %s\n. Failed to remove deployment %s pods : %+v", err, deploymentName, pods)
}
}
func testDeleteDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
internalClient := f.InternalClientset
deploymentName := "test-new-deployment"
podLabels := map[string]string{"name": nginxImageName}
replicas := int32(1)
framework.Logf("Creating simple deployment %s", deploymentName)
d := framework.NewDeployment(deploymentName, replicas, podLabels, nginxImageName, nginxImage, extensions.RollingUpdateDeploymentStrategyType)
d.Annotations = map[string]string{"test": "should-copy-to-replica-set", v1.LastAppliedConfigAnnotation: "should-not-copy-to-replica-set"}
deploy, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", nginxImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatusValid(c, deploy)
Expect(err).NotTo(HaveOccurred())
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
newRS, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(newRS).NotTo(Equal(nilRs))
stopDeployment(c, internalClient, ns, deploymentName)
}
func testRollingUpdateDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
// Create nginx pods.
deploymentPodLabels := map[string]string{"name": "sample-pod"}
rsPodLabels := map[string]string{
"name": "sample-pod",
"pod": nginxImageName,
}
rsName := "test-rolling-update-controller"
replicas := int32(1)
rsRevision := "3546343826724305832"
annotations := make(map[string]string)
annotations[deploymentutil.RevisionAnnotation] = rsRevision
rs := newRS(rsName, replicas, rsPodLabels, nginxImageName, nginxImage)
rs.Annotations = annotations
framework.Logf("Creating replica set %q (going to be adopted)", rs.Name)
_, err := c.Extensions().ReplicaSets(ns).Create(rs)
Expect(err).NotTo(HaveOccurred())
// Verify that the required pods have come up.
err = framework.VerifyPodsRunning(c, ns, "sample-pod", false, replicas)
Expect(err).NotTo(HaveOccurred(), "error in waiting for pods to come up: %s", err)
// Create a deployment to delete nginx pods and instead bring up redis pods.
deploymentName := "test-rolling-update-deployment"
framework.Logf("Creating deployment %q", deploymentName)
d := framework.NewDeployment(deploymentName, replicas, deploymentPodLabels, redisImageName, redisImage, extensions.RollingUpdateDeploymentStrategyType)
deploy, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 3546343826724305833.
framework.Logf("Ensuring deployment %q gets the next revision from the one the adopted replica set %q has", deploy.Name, rs.Name)
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "3546343826724305833", redisImage)
Expect(err).NotTo(HaveOccurred())
framework.Logf("Ensuring status for deployment %q is the expected", deploy.Name)
err = framework.WaitForDeploymentStatusValid(c, deploy)
Expect(err).NotTo(HaveOccurred())
// There should be 1 old RS (nginx-controller, which is adopted)
framework.Logf("Ensuring deployment %q has one old replica set (the one it adopted)", deploy.Name)
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
_, allOldRSs, err := deploymentutil.GetOldReplicaSets(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(len(allOldRSs)).Should(Equal(1))
// The old RS should contain pod-template-hash in its selector, label, and template label
Expect(len(allOldRSs[0].Labels[extensions.DefaultDeploymentUniqueLabelKey])).Should(BeNumerically(">", 0))
Expect(len(allOldRSs[0].Spec.Selector.MatchLabels[extensions.DefaultDeploymentUniqueLabelKey])).Should(BeNumerically(">", 0))
Expect(len(allOldRSs[0].Spec.Template.Labels[extensions.DefaultDeploymentUniqueLabelKey])).Should(BeNumerically(">", 0))
}
func testRecreateDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
// Create a deployment that brings up redis pods.
deploymentName := "test-recreate-deployment"
framework.Logf("Creating deployment %q", deploymentName)
d := framework.NewDeployment(deploymentName, int32(1), map[string]string{"name": "sample-pod-3"}, redisImageName, redisImage, extensions.RecreateDeploymentStrategyType)
deployment, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 1
framework.Logf("Waiting deployment %q to be updated to revision 1", deploymentName)
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", redisImage)
Expect(err).NotTo(HaveOccurred())
framework.Logf("Waiting deployment %q to complete", deploymentName)
Expect(framework.WaitForDeploymentStatusValid(c, deployment)).NotTo(HaveOccurred())
// Update deployment to delete redis pods and bring up nginx pods.
framework.Logf("Triggering a new rollout for deployment %q", deploymentName)
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, deploymentName, func(update *extensions.Deployment) {
update.Spec.Template.Spec.Containers[0].Name = nginxImageName
update.Spec.Template.Spec.Containers[0].Image = nginxImage
})
Expect(err).NotTo(HaveOccurred())
framework.Logf("Watching deployment %q to verify that new pods will not run with olds pods", deploymentName)
Expect(framework.WatchRecreateDeployment(c, deployment)).NotTo(HaveOccurred())
}
// testDeploymentCleanUpPolicy tests that deployment supports cleanup policy
func testDeploymentCleanUpPolicy(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
// Create nginx pods.
deploymentPodLabels := map[string]string{"name": "cleanup-pod"}
rsPodLabels := map[string]string{
"name": "cleanup-pod",
"pod": nginxImageName,
}
rsName := "test-cleanup-controller"
replicas := int32(1)
revisionHistoryLimit := util.Int32Ptr(0)
_, err := c.Extensions().ReplicaSets(ns).Create(newRS(rsName, replicas, rsPodLabels, nginxImageName, nginxImage))
Expect(err).NotTo(HaveOccurred())
// Verify that the required pods have come up.
err = framework.VerifyPodsRunning(c, ns, "cleanup-pod", false, replicas)
Expect(err).NotTo(HaveOccurred(), "error in waiting for pods to come up: %v", err)
// Create a deployment to delete nginx pods and instead bring up redis pods.
deploymentName := "test-cleanup-deployment"
framework.Logf("Creating deployment %s", deploymentName)
pods, err := c.Core().Pods(ns).List(metav1.ListOptions{LabelSelector: labels.Everything().String()})
Expect(err).NotTo(HaveOccurred(), "Failed to query for pods: %v", err)
options := metav1.ListOptions{
ResourceVersion: pods.ListMeta.ResourceVersion,
}
stopCh := make(chan struct{})
defer close(stopCh)
w, err := c.Core().Pods(ns).Watch(options)
Expect(err).NotTo(HaveOccurred())
go func() {
// There should be only one pod being created, which is the pod with the redis image.
// The old RS shouldn't create new pod when deployment controller adding pod template hash label to its selector.
numPodCreation := 1
for {
select {
case event, _ := <-w.ResultChan():
if event.Type != watch.Added {
continue
}
numPodCreation--
if numPodCreation < 0 {
framework.Failf("Expect only one pod creation, the second creation event: %#v\n", event)
}
pod, ok := event.Object.(*v1.Pod)
if !ok {
framework.Failf("Expect event Object to be a pod")
}
if pod.Spec.Containers[0].Name != redisImageName {
framework.Failf("Expect the created pod to have container name %s, got pod %#v\n", redisImageName, pod)
}
case <-stopCh:
return
}
}
}()
d := framework.NewDeployment(deploymentName, replicas, deploymentPodLabels, redisImageName, redisImage, extensions.RollingUpdateDeploymentStrategyType)
d.Spec.RevisionHistoryLimit = revisionHistoryLimit
_, err = c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
By(fmt.Sprintf("Waiting for deployment %s history to be cleaned up", deploymentName))
err = framework.WaitForDeploymentOldRSsNum(c, ns, deploymentName, int(*revisionHistoryLimit))
Expect(err).NotTo(HaveOccurred())
}
// testRolloverDeployment tests that deployment supports rollover.
// i.e. we can change desired state and kick off rolling update, then change desired state again before it finishes.
func testRolloverDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
podName := "rollover-pod"
deploymentPodLabels := map[string]string{"name": podName}
rsPodLabels := map[string]string{
"name": podName,
"pod": nginxImageName,
}
rsName := "test-rollover-controller"
rsReplicas := int32(1)
_, err := c.Extensions().ReplicaSets(ns).Create(newRS(rsName, rsReplicas, rsPodLabels, nginxImageName, nginxImage))
Expect(err).NotTo(HaveOccurred())
// Verify that the required pods have come up.
err = framework.VerifyPodsRunning(c, ns, podName, false, rsReplicas)
Expect(err).NotTo(HaveOccurred(), "error in waiting for pods to come up: %v", err)
// Wait for replica set to become ready before adopting it.
framework.Logf("Waiting for pods owned by replica set %q to become ready", rsName)
Expect(framework.WaitForReadyReplicaSet(c, ns, rsName)).NotTo(HaveOccurred())
// Create a deployment to delete nginx pods and instead bring up redis-slave pods.
// We use a nonexistent image here, so that we make sure it won't finish
deploymentName, deploymentImageName := "test-rollover-deployment", "redis-slave"
deploymentReplicas := int32(1)
deploymentImage := "gcr.io/google_samples/gb-redisslave:nonexistent"
deploymentStrategyType := extensions.RollingUpdateDeploymentStrategyType
framework.Logf("Creating deployment %q", deploymentName)
newDeployment := framework.NewDeployment(deploymentName, deploymentReplicas, deploymentPodLabels, deploymentImageName, deploymentImage, deploymentStrategyType)
newDeployment.Spec.Strategy.RollingUpdate = &extensions.RollingUpdateDeployment{
MaxUnavailable: intOrStrP(0),
MaxSurge: intOrStrP(1),
}
newDeployment.Spec.MinReadySeconds = int32(10)
_, err = c.Extensions().Deployments(ns).Create(newDeployment)
Expect(err).NotTo(HaveOccurred())
// Verify that the pods were scaled up and down as expected.
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
framework.Logf("Make sure deployment %q performs scaling operations", deploymentName)
// Make sure the deployment starts to scale up and down replica sets by checking if its updated replicas >= 1
err = framework.WaitForDeploymentUpdatedReplicasLTE(c, ns, deploymentName, deploymentReplicas, deployment.Generation)
// Check if it's updated to revision 1 correctly
framework.Logf("Check revision of new replica set for deployment %q", deploymentName)
_, newRS := checkDeploymentRevision(c, ns, deploymentName, "1", deploymentImageName, deploymentImage)
framework.Logf("Ensure that both replica sets have 1 created replica")
oldRS, err := c.Extensions().ReplicaSets(ns).Get(rsName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
ensureReplicas(oldRS, int32(1))
newRS, err = c.Extensions().ReplicaSets(ns).Get(newRS.Name, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
ensureReplicas(newRS, int32(1))
// The deployment is stuck, update it to rollover the above 2 ReplicaSets and bring up redis pods.
framework.Logf("Rollover old replica sets for deployment %q with new image update", deploymentName)
updatedDeploymentImageName, updatedDeploymentImage := redisImageName, redisImage
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, newDeployment.Name, func(update *extensions.Deployment) {
update.Spec.Template.Spec.Containers[0].Name = updatedDeploymentImageName
update.Spec.Template.Spec.Containers[0].Image = updatedDeploymentImage
})
Expect(err).NotTo(HaveOccurred())
// Use observedGeneration to determine if the controller noticed the pod template update.
framework.Logf("Wait deployment %q to be observed by the deployment controller", deploymentName)
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 2
framework.Logf("Wait for revision update of deployment %q to 2", deploymentName)
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "2", updatedDeploymentImage)
Expect(err).NotTo(HaveOccurred())
framework.Logf("Make sure deployment %q is complete", deploymentName)
err = framework.WaitForDeploymentStatus(c, deployment)
Expect(err).NotTo(HaveOccurred())
framework.Logf("Ensure that both old replica sets have no replicas")
oldRS, err = c.Extensions().ReplicaSets(ns).Get(rsName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
ensureReplicas(oldRS, int32(0))
// Not really the new replica set anymore but we GET by name so that's fine.
newRS, err = c.Extensions().ReplicaSets(ns).Get(newRS.Name, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
ensureReplicas(newRS, int32(0))
}
func ensureReplicas(rs *extensions.ReplicaSet, replicas int32) {
Expect(*rs.Spec.Replicas).Should(Equal(replicas))
Expect(rs.Status.Replicas).Should(Equal(replicas))
}
// TODO: Can be moved to a unit test.
func testPausedDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
deploymentName := "test-paused-deployment"
podLabels := map[string]string{"name": nginxImageName}
d := framework.NewDeployment(deploymentName, 1, podLabels, nginxImageName, nginxImage, extensions.RollingUpdateDeploymentStrategyType)
d.Spec.Paused = true
tgps := int64(1)
d.Spec.Template.Spec.TerminationGracePeriodSeconds = &tgps
framework.Logf("Creating paused deployment %s", deploymentName)
_, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
// Check that deployment is created fine.
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
// Verify that there is no latest state realized for the new deployment.
rs, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(rs).To(Equal(nilRs))
// Update the deployment to run
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, d.Name, func(update *extensions.Deployment) {
update.Spec.Paused = false
})
Expect(err).NotTo(HaveOccurred())
// Use observedGeneration to determine if the controller noticed the resume.
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
Expect(err).NotTo(HaveOccurred())
opts := metav1.ListOptions{LabelSelector: selector.String()}
w, err := c.Extensions().ReplicaSets(ns).Watch(opts)
Expect(err).NotTo(HaveOccurred())
select {
case <-w.ResultChan():
// this is it
case <-time.After(time.Minute):
err = fmt.Errorf("expected a new replica set to be created")
Expect(err).NotTo(HaveOccurred())
}
// Pause the deployment and delete the replica set.
// The paused deployment shouldn't recreate a new one.
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, d.Name, func(update *extensions.Deployment) {
update.Spec.Paused = true
})
Expect(err).NotTo(HaveOccurred())
// Use observedGeneration to determine if the controller noticed the pause.
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
// Update the deployment template - the new replicaset should stay the same
framework.Logf("Updating paused deployment %q", deploymentName)
newTGPS := int64(0)
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, d.Name, func(update *extensions.Deployment) {
update.Spec.Template.Spec.TerminationGracePeriodSeconds = &newTGPS
})
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
framework.Logf("Looking for new replicaset for paused deployment %q (there should be none)", deploymentName)
newRS, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(newRS).To(Equal(nilRs))
_, allOldRs, err := deploymentutil.GetOldReplicaSets(deployment, c)
Expect(err).NotTo(HaveOccurred())
if len(allOldRs) != 1 {
err = fmt.Errorf("expected an old replica set")
Expect(err).NotTo(HaveOccurred())
}
framework.Logf("Comparing deployment diff with old replica set %q", allOldRs[0].Name)
if *allOldRs[0].Spec.Template.Spec.TerminationGracePeriodSeconds == newTGPS {
err = fmt.Errorf("TerminationGracePeriodSeconds on the replica set should be %d but is %d", tgps, newTGPS)
Expect(err).NotTo(HaveOccurred())
}
}
// testRollbackDeployment tests that a deployment is created (revision 1) and updated (revision 2), and
// then rollback to revision 1 (should update template to revision 1, and then update revision 1 to 3),
// and then rollback to last revision.
func testRollbackDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
podName := "nginx"
deploymentPodLabels := map[string]string{"name": podName}
// 1. Create a deployment to create nginx pods.
deploymentName, deploymentImageName := "test-rollback-deployment", nginxImageName
deploymentReplicas := int32(1)
deploymentImage := nginxImage
deploymentStrategyType := extensions.RollingUpdateDeploymentStrategyType
framework.Logf("Creating deployment %s", deploymentName)
d := framework.NewDeployment(deploymentName, deploymentReplicas, deploymentPodLabels, deploymentImageName, deploymentImage, deploymentStrategyType)
createAnnotation := map[string]string{"action": "create", "author": "node"}
d.Annotations = createAnnotation
deploy, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", deploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatusValid(c, deploy)
Expect(err).NotTo(HaveOccurred())
// Current newRS annotation should be "create"
err = framework.CheckNewRSAnnotations(c, ns, deploymentName, createAnnotation)
Expect(err).NotTo(HaveOccurred())
// 2. Update the deployment to create redis pods.
updatedDeploymentImage := redisImage
updatedDeploymentImageName := redisImageName
updateAnnotation := map[string]string{"action": "update", "log": "I need to update it"}
deployment, err := framework.UpdateDeploymentWithRetries(c, ns, d.Name, func(update *extensions.Deployment) {
update.Spec.Template.Spec.Containers[0].Name = updatedDeploymentImageName
update.Spec.Template.Spec.Containers[0].Image = updatedDeploymentImage
update.Annotations = updateAnnotation
})
Expect(err).NotTo(HaveOccurred())
// Use observedGeneration to determine if the controller noticed the pod template update.
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 2
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "2", updatedDeploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deployment)
Expect(err).NotTo(HaveOccurred())
// Current newRS annotation should be "update"
err = framework.CheckNewRSAnnotations(c, ns, deploymentName, updateAnnotation)
Expect(err).NotTo(HaveOccurred())
// 3. Update the deploymentRollback to rollback to revision 1
revision := int64(1)
framework.Logf("rolling back deployment %s to revision %d", deploymentName, revision)
rollback := newDeploymentRollback(deploymentName, nil, revision)
err = c.Extensions().Deployments(ns).Rollback(rollback)
Expect(err).NotTo(HaveOccurred())
// Wait for the deployment to start rolling back
err = framework.WaitForDeploymentRollbackCleared(c, ns, deploymentName)
Expect(err).NotTo(HaveOccurred())
// TODO: report RollbackDone in deployment status and check it here
// Wait for it to be updated to revision 3
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "3", deploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deployment)
Expect(err).NotTo(HaveOccurred())
// Current newRS annotation should be "create", after the rollback
err = framework.CheckNewRSAnnotations(c, ns, deploymentName, createAnnotation)
Expect(err).NotTo(HaveOccurred())
// 4. Update the deploymentRollback to rollback to last revision
revision = 0
framework.Logf("rolling back deployment %s to last revision", deploymentName)
rollback = newDeploymentRollback(deploymentName, nil, revision)
err = c.Extensions().Deployments(ns).Rollback(rollback)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentRollbackCleared(c, ns, deploymentName)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 4
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "4", updatedDeploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deployment)
Expect(err).NotTo(HaveOccurred())
// Current newRS annotation should be "update", after the rollback
err = framework.CheckNewRSAnnotations(c, ns, deploymentName, updateAnnotation)
Expect(err).NotTo(HaveOccurred())
}
// testRollbackDeploymentRSNoRevision tests that deployment supports rollback even when there's old replica set without revision.
// An old replica set without revision is created, and then a deployment is created (v1). The deployment shouldn't add revision
// annotation to the old replica set. Then rollback the deployment to last revision, and it should fail.
// Then update the deployment to v2 and rollback it to v1 should succeed, now the deployment
// becomes v3. Then rollback the deployment to v10 (doesn't exist in history) should fail.
// Finally, rollback the deployment (v3) to v3 should be no-op.
// TODO: When we finished reporting rollback status in deployment status, check the rollback status here in each case.
func testRollbackDeploymentRSNoRevision(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
podName := "nginx"
deploymentPodLabels := map[string]string{"name": podName}
rsPodLabels := map[string]string{
"name": podName,
"pod": nginxImageName,
}
// Create an old RS without revision
rsName := "test-rollback-no-revision-controller"
rsReplicas := int32(0)
rs := newRS(rsName, rsReplicas, rsPodLabels, nginxImageName, nginxImage)
rs.Annotations = make(map[string]string)
rs.Annotations["make"] = "difference"
_, err := c.Extensions().ReplicaSets(ns).Create(rs)
Expect(err).NotTo(HaveOccurred())
// 1. Create a deployment to create nginx pods, which have different template than the replica set created above.
deploymentName, deploymentImageName := "test-rollback-no-revision-deployment", nginxImageName
deploymentReplicas := int32(1)
deploymentImage := nginxImage
deploymentStrategyType := extensions.RollingUpdateDeploymentStrategyType
framework.Logf("Creating deployment %s", deploymentName)
d := framework.NewDeployment(deploymentName, deploymentReplicas, deploymentPodLabels, deploymentImageName, deploymentImage, deploymentStrategyType)
deploy, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", deploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatusValid(c, deploy)
Expect(err).NotTo(HaveOccurred())
// Check that the replica set we created still doesn't contain revision information
rs, err = c.Extensions().ReplicaSets(ns).Get(rsName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
Expect(rs.Annotations[deploymentutil.RevisionAnnotation]).Should(Equal(""))
// 2. Update the deploymentRollback to rollback to last revision
// Since there's only 1 revision in history, it should stay as revision 1
revision := int64(0)
framework.Logf("rolling back deployment %s to last revision", deploymentName)
rollback := newDeploymentRollback(deploymentName, nil, revision)
err = c.Extensions().Deployments(ns).Rollback(rollback)
Expect(err).NotTo(HaveOccurred())
// Wait for the deployment to start rolling back
err = framework.WaitForDeploymentRollbackCleared(c, ns, deploymentName)
Expect(err).NotTo(HaveOccurred())
// TODO: report RollbackRevisionNotFound in deployment status and check it here
// The pod template shouldn't change since there's no last revision
// Check if the deployment is still revision 1 and still has the old pod template
checkDeploymentRevision(c, ns, deploymentName, "1", deploymentImageName, deploymentImage)
// 3. Update the deployment to create redis pods.
updatedDeploymentImage := redisImage
updatedDeploymentImageName := redisImageName
deployment, err := framework.UpdateDeploymentWithRetries(c, ns, d.Name, func(update *extensions.Deployment) {
update.Spec.Template.Spec.Containers[0].Name = updatedDeploymentImageName
update.Spec.Template.Spec.Containers[0].Image = updatedDeploymentImage
})
Expect(err).NotTo(HaveOccurred())
// Use observedGeneration to determine if the controller noticed the pod template update.
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 2
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "2", updatedDeploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deployment)
Expect(err).NotTo(HaveOccurred())
// 4. Update the deploymentRollback to rollback to revision 1
revision = 1
framework.Logf("rolling back deployment %s to revision %d", deploymentName, revision)
rollback = newDeploymentRollback(deploymentName, nil, revision)
err = c.Extensions().Deployments(ns).Rollback(rollback)
Expect(err).NotTo(HaveOccurred())
// Wait for the deployment to start rolling back
err = framework.WaitForDeploymentRollbackCleared(c, ns, deploymentName)
Expect(err).NotTo(HaveOccurred())
// TODO: report RollbackDone in deployment status and check it here
// The pod template should be updated to the one in revision 1
// Wait for it to be updated to revision 3
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "3", deploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deployment)
Expect(err).NotTo(HaveOccurred())
// 5. Update the deploymentRollback to rollback to revision 10
// Since there's no revision 10 in history, it should stay as revision 3
revision = 10
framework.Logf("rolling back deployment %s to revision %d", deploymentName, revision)
rollback = newDeploymentRollback(deploymentName, nil, revision)
err = c.Extensions().Deployments(ns).Rollback(rollback)
Expect(err).NotTo(HaveOccurred())
// Wait for the deployment to start rolling back
err = framework.WaitForDeploymentRollbackCleared(c, ns, deploymentName)
Expect(err).NotTo(HaveOccurred())
// TODO: report RollbackRevisionNotFound in deployment status and check it here
// The pod template shouldn't change since there's no revision 10
// Check if it's still revision 3 and still has the old pod template
checkDeploymentRevision(c, ns, deploymentName, "3", deploymentImageName, deploymentImage)
// 6. Update the deploymentRollback to rollback to revision 3
// Since it's already revision 3, it should be no-op
revision = 3
framework.Logf("rolling back deployment %s to revision %d", deploymentName, revision)
rollback = newDeploymentRollback(deploymentName, nil, revision)
err = c.Extensions().Deployments(ns).Rollback(rollback)
Expect(err).NotTo(HaveOccurred())
// Wait for the deployment to start rolling back
err = framework.WaitForDeploymentRollbackCleared(c, ns, deploymentName)
Expect(err).NotTo(HaveOccurred())
// TODO: report RollbackTemplateUnchanged in deployment status and check it here
// The pod template shouldn't change since it's already revision 3
// Check if it's still revision 3 and still has the old pod template
checkDeploymentRevision(c, ns, deploymentName, "3", deploymentImageName, deploymentImage)
}
func testDeploymentLabelAdopted(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
// Create nginx pods.
podName := "nginx"
podLabels := map[string]string{"name": podName}
rsName := "test-adopted-controller"
replicas := int32(1)
image := nginxImage
_, err := c.Extensions().ReplicaSets(ns).Create(newRS(rsName, replicas, podLabels, podName, image))
Expect(err).NotTo(HaveOccurred())
// Verify that the required pods have come up.
err = framework.VerifyPodsRunning(c, ns, podName, false, replicas)
Expect(err).NotTo(HaveOccurred(), "error in waiting for pods to come up: %v", err)
// Create a nginx deployment to adopt the old rs.
deploymentName := "test-adopted-deployment"
framework.Logf("Creating deployment %s", deploymentName)
deploy, err := c.Extensions().Deployments(ns).Create(framework.NewDeployment(deploymentName, replicas, podLabels, podName, image, extensions.RollingUpdateDeploymentStrategyType))
Expect(err).NotTo(HaveOccurred())
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", image)
Expect(err).NotTo(HaveOccurred())
// The RS and pods should be relabeled before the status is updated by syncRollingUpdateDeployment
err = framework.WaitForDeploymentStatusValid(c, deploy)
Expect(err).NotTo(HaveOccurred())
// There should be no old RSs (overlapping RS)
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
oldRSs, allOldRSs, newRS, err := deploymentutil.GetAllReplicaSets(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(len(oldRSs)).Should(Equal(0))
Expect(len(allOldRSs)).Should(Equal(0))
// New RS should contain pod-template-hash in its selector, label, and template label
err = framework.CheckRSHashLabel(newRS)
Expect(err).NotTo(HaveOccurred())
// All pods targeted by the deployment should contain pod-template-hash in their labels, and there should be only 3 pods
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
Expect(err).NotTo(HaveOccurred())
options := metav1.ListOptions{LabelSelector: selector.String()}
pods, err := c.Core().Pods(ns).List(options)
Expect(err).NotTo(HaveOccurred())
err = framework.CheckPodHashLabel(pods)
Expect(err).NotTo(HaveOccurred())
Expect(int32(len(pods.Items))).Should(Equal(replicas))
}
// TODO: Can be moved to a unit test.
func testScalePausedDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
podLabels := map[string]string{"name": nginxImageName}
replicas := int32(0)
// Create a nginx deployment.
deploymentName := "nginx-deployment"
d := framework.NewDeployment(deploymentName, replicas, podLabels, nginxImageName, nginxImage, extensions.RollingUpdateDeploymentStrategyType)
framework.Logf("Creating deployment %q", deploymentName)
_, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
// Check that deployment is created fine.
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
framework.Logf("Waiting for deployment %q to have no running pods", deploymentName)
Expect(framework.WaitForDeploymentUpdatedReplicasLTE(c, ns, deploymentName, replicas, deployment.Generation))
// Pause the deployment and try to scale it.
framework.Logf("Pause deployment %q before scaling it up", deploymentName)
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, d.Name, func(update *extensions.Deployment) {
update.Spec.Paused = true
})
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
// Scale the paused deployment.
framework.Logf("Scaling up the paused deployment %q", deploymentName)
newReplicas := int32(1)
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, deployment.Name, func(update *extensions.Deployment) {
update.Spec.Replicas = &newReplicas
})
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
rs, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(*(rs.Spec.Replicas)).Should(Equal(newReplicas))
}
func testScaledRolloutDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
podLabels := map[string]string{"name": nginxImageName}
replicas := int32(10)
// Create a nginx deployment.
deploymentName := "nginx"
d := framework.NewDeployment(deploymentName, replicas, podLabels, nginxImageName, nginxImage, extensions.RollingUpdateDeploymentStrategyType)
d.Spec.Strategy.RollingUpdate = new(extensions.RollingUpdateDeployment)
d.Spec.Strategy.RollingUpdate.MaxSurge = intOrStrP(3)
d.Spec.Strategy.RollingUpdate.MaxUnavailable = intOrStrP(2)
framework.Logf("Creating deployment %q", deploymentName)
deployment, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
framework.Logf("Waiting for observed generation %d", deployment.Generation)
Expect(framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)).NotTo(HaveOccurred())
// Verify that the required pods have come up.
framework.Logf("Waiting for all required pods to come up")
err = framework.VerifyPodsRunning(f.ClientSet, ns, nginxImageName, false, *(deployment.Spec.Replicas))
Expect(err).NotTo(HaveOccurred(), "error in waiting for pods to come up: %v", err)
framework.Logf("Waiting for deployment %q to complete", deployment.Name)
Expect(framework.WaitForDeploymentStatusValid(c, deployment)).NotTo(HaveOccurred())
first, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
// Update the deployment with a non-existent image so that the new replica set will be blocked.
framework.Logf("Updating deployment %q with a non-existent image", deploymentName)
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, d.Name, func(update *extensions.Deployment) {
update.Spec.Template.Spec.Containers[0].Image = "nginx:404"
})
Expect(err).NotTo(HaveOccurred())
framework.Logf("Waiting for observed generation %d", deployment.Generation)
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
deployment, err = c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
if deployment.Status.AvailableReplicas < deploymentutil.MinAvailable(deployment) {
Expect(fmt.Errorf("Observed %d available replicas, less than min required %d", deployment.Status.AvailableReplicas, deploymentutil.MinAvailable(deployment))).NotTo(HaveOccurred())
}
framework.Logf("Checking that the replica sets for %q are synced", deploymentName)
second, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
first, err = c.Extensions().ReplicaSets(first.Namespace).Get(first.Name, metav1.GetOptions{})
Expect(err).NotTo(HaveOccurred())
firstCond := replicaSetHasDesiredReplicas(c.Extensions(), first)
err = wait.PollImmediate(10*time.Millisecond, 1*time.Minute, firstCond)