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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"
"strings"
"time"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/annotations"
"k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apis/extensions"
clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
client "k8s.io/kubernetes/pkg/client/unversioned"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
"k8s.io/kubernetes/pkg/kubectl"
"k8s.io/kubernetes/pkg/labels"
"k8s.io/kubernetes/pkg/util"
"k8s.io/kubernetes/pkg/util/intstr"
"k8s.io/kubernetes/pkg/util/wait"
"k8s.io/kubernetes/pkg/watch"
"k8s.io/kubernetes/test/e2e/framework"
)
const (
// nginxImage defined in kubectl.go
nginxImageName = "nginx"
redisImage = "gcr.io/google_containers/redis:e2e"
redisImageName = "redis"
)
var _ = framework.KubeDescribe("Deployment", func() {
f := framework.NewDefaultFramework("deployment")
It("deployment should create new pods", func() {
testNewDeployment(f)
})
It("RollingUpdateDeployment should delete old pods and create new ones", func() {
testRollingUpdateDeployment(f)
})
It("RollingUpdateDeployment should scale up and down in the right order", func() {
testRollingUpdateDeploymentEvents(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)
})
// TODO: add tests that cover deployment.Spec.MinReadySeconds once we solved clock-skew issues
})
func newRS(rsName string, replicas int32, rsPodLabels map[string]string, imageName string, image string) *extensions.ReplicaSet {
zero := int64(0)
return &extensions.ReplicaSet{
ObjectMeta: api.ObjectMeta{
Name: rsName,
},
Spec: extensions.ReplicaSetSpec{
Replicas: replicas,
Selector: &unversioned.LabelSelector{MatchLabels: rsPodLabels},
Template: api.PodTemplateSpec{
ObjectMeta: api.ObjectMeta{
Labels: rsPodLabels,
},
Spec: api.PodSpec{
TerminationGracePeriodSeconds: &zero,
Containers: []api.Container{
{
Name: imageName,
Image: image,
},
},
},
},
},
}
}
func newDeployment(deploymentName string, replicas int32, podLabels map[string]string, imageName string, image string, strategyType extensions.DeploymentStrategyType, revisionHistoryLimit *int32) *extensions.Deployment {
zero := int64(0)
return &extensions.Deployment{
ObjectMeta: api.ObjectMeta{
Name: deploymentName,
},
Spec: extensions.DeploymentSpec{
Replicas: replicas,
Selector: &unversioned.LabelSelector{MatchLabels: podLabels},
Strategy: extensions.DeploymentStrategy{
Type: strategyType,
},
RevisionHistoryLimit: revisionHistoryLimit,
Template: api.PodTemplateSpec{
ObjectMeta: api.ObjectMeta{
Labels: podLabels,
},
Spec: api.PodSpec{
TerminationGracePeriodSeconds: &zero,
Containers: []api.Container{
{
Name: imageName,
Image: image,
},
},
},
},
},
}
}
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)
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.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 stopDeploymentOverlap(c clientset.Interface, oldC client.Interface, ns, deploymentName, overlapWith string) {
stopDeploymentMaybeOverlap(c, oldC, ns, deploymentName, overlapWith)
}
func stopDeployment(c clientset.Interface, oldC client.Interface, ns, deploymentName string) {
stopDeploymentMaybeOverlap(c, oldC, ns, deploymentName, "")
}
func stopDeploymentMaybeOverlap(c clientset.Interface, oldC client.Interface, ns, deploymentName, overlapWith string) {
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
Expect(err).NotTo(HaveOccurred())
framework.Logf("Deleting deployment %s", deploymentName)
reaper, err := kubectl.ReaperFor(extensions.Kind("Deployment"), c)
Expect(err).NotTo(HaveOccurred())
timeout := 1 * time.Minute
err = reaper.Stop(ns, deployment.Name, timeout, api.NewDeleteOptions(0))
Expect(err).NotTo(HaveOccurred())
framework.Logf("Ensuring deployment %s was deleted", deploymentName)
_, err = c.Extensions().Deployments(ns).Get(deployment.Name)
Expect(err).To(HaveOccurred())
Expect(errors.IsNotFound(err)).To(BeTrue())
framework.Logf("Ensuring deployment %s's RSes were deleted", deploymentName)
selector, err := unversioned.LabelSelectorAsSelector(deployment.Spec.Selector)
Expect(err).NotTo(HaveOccurred())
options := api.ListOptions{LabelSelector: selector}
rss, err := c.Extensions().ReplicaSets(ns).List(options)
Expect(err).NotTo(HaveOccurred())
// RSes may be created by overlapping deployments right after this deployment is deleted, ignore them
if len(overlapWith) == 0 {
Expect(rss.Items).Should(HaveLen(0))
} else {
noOverlapRSes := []extensions.ReplicaSet{}
for _, rs := range rss.Items {
if !strings.HasPrefix(rs.Name, overlapWith) {
noOverlapRSes = append(noOverlapRSes, rs)
}
}
Expect(noOverlapRSes).Should(HaveLen(0))
}
framework.Logf("Ensuring deployment %s's Pods were deleted", deploymentName)
var pods *api.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(overlapWith) == 0 && len(pods.Items) == 0 {
return true, nil
} else if len(overlapWith) != 0 {
noOverlapPods := []api.Pod{}
for _, pod := range pods.Items {
if !strings.HasPrefix(pod.Name, overlapWith) {
noOverlapPods = append(noOverlapPods, pod)
}
}
if len(noOverlapPods) == 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 testNewDeployment(f *framework.Framework) {
ns := f.Namespace.Name
// TODO: remove unversionedClient when the refactoring is done. Currently some
// functions like verifyPod still expects a unversioned#Client.
c := f.ClientSet
deploymentName := "test-new-deployment"
podLabels := map[string]string{"name": nginxImageName}
replicas := int32(1)
framework.Logf("Creating simple deployment %s", deploymentName)
d := newDeployment(deploymentName, replicas, podLabels, nginxImageName, nginxImage, extensions.RollingUpdateDeploymentStrategyType, nil)
d.Annotations = map[string]string{"test": "should-copy-to-replica-set", annotations.LastAppliedConfigAnnotation: "should-not-copy-to-replica-set"}
deploy, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", nginxImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deploy)
Expect(err).NotTo(HaveOccurred())
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
Expect(err).NotTo(HaveOccurred())
newRS, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
// Check new RS annotations
Expect(newRS.Annotations["test"]).Should(Equal("should-copy-to-replica-set"))
Expect(newRS.Annotations[annotations.LastAppliedConfigAnnotation]).Should(Equal(""))
Expect(deployment.Annotations["test"]).Should(Equal("should-copy-to-replica-set"))
Expect(deployment.Annotations[annotations.LastAppliedConfigAnnotation]).Should(Equal("should-not-copy-to-replica-set"))
}
func testRollingUpdateDeployment(f *framework.Framework) {
ns := f.Namespace.Name
// TODO: remove unversionedClient when the refactoring is done. Currently some
// functions like verifyPod still expects a unversioned#Client.
unversionedClient := f.Client
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(3)
_, 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.VerifyPods(unversionedClient, ns, "sample-pod", false, 3)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).NotTo(HaveOccurred())
}
// Create a deployment to delete nginx pods and instead bring up redis pods.
deploymentName := "test-rolling-update-deployment"
framework.Logf("Creating deployment %s", deploymentName)
deploy, err := c.Extensions().Deployments(ns).Create(newDeployment(deploymentName, replicas, deploymentPodLabels, redisImageName, redisImage, extensions.RollingUpdateDeploymentStrategyType, nil))
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", redisImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deploy)
Expect(err).NotTo(HaveOccurred())
// There should be 1 old RS (nginx-controller, which is adopted)
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
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 testRollingUpdateDeploymentEvents(f *framework.Framework) {
ns := f.Namespace.Name
// TODO: remove unversionedClient when the refactoring is done. Currently some
// functions like verifyPod still expects a unversioned#Client.
unversionedClient := f.Client
c := f.ClientSet
// Create nginx pods.
deploymentPodLabels := map[string]string{"name": "sample-pod-2"}
rsPodLabels := map[string]string{
"name": "sample-pod-2",
"pod": nginxImageName,
}
rsName := "test-rolling-scale-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
_, err := c.Extensions().ReplicaSets(ns).Create(rs)
Expect(err).NotTo(HaveOccurred())
// Verify that the required pods have come up.
err = framework.VerifyPods(unversionedClient, ns, "sample-pod-2", false, 1)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).NotTo(HaveOccurred())
}
// Create a deployment to delete nginx pods and instead bring up redis pods.
deploymentName := "test-rolling-scale-deployment"
framework.Logf("Creating deployment %s", deploymentName)
deploy, err := c.Extensions().Deployments(ns).Create(newDeployment(deploymentName, replicas, deploymentPodLabels, redisImageName, redisImage, extensions.RollingUpdateDeploymentStrategyType, nil))
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Wait for it to be updated to revision 3546343826724305833
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "3546343826724305833", redisImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deploy)
Expect(err).NotTo(HaveOccurred())
// Verify that the pods were scaled up and down as expected. We use events to verify that.
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
Expect(err).NotTo(HaveOccurred())
framework.WaitForEvents(unversionedClient, ns, deployment, 2)
events, err := c.Core().Events(ns).Search(deployment)
if err != nil {
framework.Logf("error in listing events: %s", err)
Expect(err).NotTo(HaveOccurred())
}
// There should be 2 events, one to scale up the new ReplicaSet and then to scale down
// the old ReplicaSet.
Expect(len(events.Items)).Should(Equal(2))
newRS, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(newRS).NotTo(Equal(nil))
Expect(events.Items[0].Message).Should(Equal(fmt.Sprintf("Scaled up replica set %s to 1", newRS.Name)))
Expect(events.Items[1].Message).Should(Equal(fmt.Sprintf("Scaled down replica set %s to 0", rsName)))
}
func testRecreateDeployment(f *framework.Framework) {
ns := f.Namespace.Name
// TODO: remove unversionedClient when the refactoring is done. Currently some
// functions like verifyPod still expects a unversioned#Client.
unversionedClient := f.Client
c := f.ClientSet
// Create nginx pods.
deploymentPodLabels := map[string]string{"name": "sample-pod-3"}
rsPodLabels := map[string]string{
"name": "sample-pod-3",
"pod": nginxImageName,
}
rsName := "test-recreate-controller"
replicas := int32(3)
_, 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.VerifyPods(unversionedClient, ns, "sample-pod-3", false, 3)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).NotTo(HaveOccurred())
}
// Create a deployment to delete nginx pods and instead bring up redis pods.
deploymentName := "test-recreate-deployment"
framework.Logf("Creating deployment %s", deploymentName)
deploy, err := c.Extensions().Deployments(ns).Create(newDeployment(deploymentName, replicas, deploymentPodLabels, redisImageName, redisImage, extensions.RecreateDeploymentStrategyType, nil))
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", redisImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(c, deploy)
Expect(err).NotTo(HaveOccurred())
// Verify that the pods were scaled up and down as expected. We use events to verify that.
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
Expect(err).NotTo(HaveOccurred())
framework.WaitForEvents(unversionedClient, ns, deployment, 2)
events, err := c.Core().Events(ns).Search(deployment)
if err != nil {
framework.Logf("error in listing events: %s", err)
Expect(err).NotTo(HaveOccurred())
}
// There should be 2 events, one to scale up the new ReplicaSet and then to scale down the old ReplicaSet.
Expect(len(events.Items)).Should(Equal(2))
newRS, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(newRS).NotTo(Equal(nil))
Expect(events.Items[0].Message).Should(Equal(fmt.Sprintf("Scaled down replica set %s to 0", rsName)))
Expect(events.Items[1].Message).Should(Equal(fmt.Sprintf("Scaled up replica set %s to 3", newRS.Name)))
}
// testDeploymentCleanUpPolicy tests that deployment supports cleanup policy
func testDeploymentCleanUpPolicy(f *framework.Framework) {
ns := f.Namespace.Name
unversionedClient := f.Client
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.VerifyPods(unversionedClient, ns, "cleanup-pod", false, 1)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).NotTo(HaveOccurred())
}
// 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(api.ListOptions{LabelSelector: labels.Everything()})
if err != nil {
Expect(err).NotTo(HaveOccurred(), "Failed to query for pods: %v", err)
}
options := api.ListOptions{
ResourceVersion: pods.ListMeta.ResourceVersion,
}
stopCh := make(chan struct{})
w, err := c.Core().Pods(ns).Watch(options)
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.(*api.Pod)
if !ok {
Fail("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
}
}
}()
_, err = c.Extensions().Deployments(ns).Create(newDeployment(deploymentName, replicas, deploymentPodLabels, redisImageName, redisImage, extensions.RollingUpdateDeploymentStrategyType, revisionHistoryLimit))
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
err = framework.WaitForDeploymentOldRSsNum(c, ns, deploymentName, int(*revisionHistoryLimit))
Expect(err).NotTo(HaveOccurred())
close(stopCh)
}
// 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
// TODO: remove unversionedClient when the refactoring is done. Currently some
// functions like verifyPod still expects a unversioned#Client.
unversionedClient := f.Client
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(4)
_, 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.VerifyPods(unversionedClient, ns, podName, false, rsReplicas)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).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(4)
deploymentImage := "gcr.io/google_samples/gb-redisslave:nonexistent"
deploymentStrategyType := extensions.RollingUpdateDeploymentStrategyType
framework.Logf("Creating deployment %s", deploymentName)
newDeployment := newDeployment(deploymentName, deploymentReplicas, deploymentPodLabels, deploymentImageName, deploymentImage, deploymentStrategyType, nil)
newDeployment.Spec.Strategy.RollingUpdate = &extensions.RollingUpdateDeployment{
MaxUnavailable: intstr.FromInt(1),
MaxSurge: intstr.FromInt(1),
}
_, err = c.Extensions().Deployments(ns).Create(newDeployment)
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Verify that the pods were scaled up and down as expected.
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
Expect(err).NotTo(HaveOccurred())
// 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, 1, deployment.Generation)
// Check if it's updated to revision 1 correctly
_, newRS := checkDeploymentRevision(c, ns, deploymentName, "1", deploymentImageName, deploymentImage)
// Before the deployment finishes, update the deployment to rollover the above 2 ReplicaSets and bring up redis pods.
Expect(newRS.Spec.Replicas).Should(BeNumerically("<", deploymentReplicas))
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.
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())
}
func testPausedDeployment(f *framework.Framework) {
ns := f.Namespace.Name
// TODO: remove unversionedClient when the refactoring is done. Currently some
// functions like verifyPod still expects a unversioned#Client.
c := f.ClientSet
deploymentName := "test-paused-deployment"
podLabels := map[string]string{"name": nginxImageName}
d := newDeployment(deploymentName, 1, podLabels, nginxImageName, nginxImage, extensions.RollingUpdateDeploymentStrategyType, nil)
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())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Check that deployment is created fine.
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
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())
if rs != nil {
err = fmt.Errorf("unexpected new rs/%s for deployment/%s", rs.Name, deployment.Name)
Expect(err).NotTo(HaveOccurred())
}
// 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 := unversioned.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
Expect(err).NotTo(HaveOccurred())
}
opts := api.ListOptions{LabelSelector: selector}
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())
if newRS != nil {
err = fmt.Errorf("No replica set should match the deployment template but there is %q", newRS.Name)
Expect(err).NotTo(HaveOccurred())
}
_, 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 := newDeployment(deploymentName, deploymentReplicas, deploymentPodLabels, deploymentImageName, deploymentImage, deploymentStrategyType, nil)
createAnnotation := map[string]string{"action": "create", "author": "node"}
d.Annotations = createAnnotation
deploy, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", deploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(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 := newDeployment(deploymentName, deploymentReplicas, deploymentPodLabels, deploymentImageName, deploymentImage, deploymentStrategyType, nil)
deploy, err := c.Extensions().Deployments(ns).Create(d)
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", deploymentImage)
Expect(err).NotTo(HaveOccurred())
err = framework.WaitForDeploymentStatus(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)
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
// TODO: remove unversionedClient when the refactoring is done. Currently some
// functions like verifyPod still expects a unversioned#Client.
unversionedClient := f.Client
c := f.ClientSet
// Create nginx pods.
podName := "nginx"
podLabels := map[string]string{"name": podName}
rsName := "test-adopted-controller"
replicas := int32(3)
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.VerifyPods(unversionedClient, ns, podName, false, 3)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).NotTo(HaveOccurred())
}
// 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(newDeployment(deploymentName, replicas, podLabels, podName, image, extensions.RollingUpdateDeploymentStrategyType, nil))
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// 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.WaitForDeploymentStatus(c, deploy)
Expect(err).NotTo(HaveOccurred())
// There should be no old RSs (overlapping RS)
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
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 := unversioned.LabelSelectorAsSelector(deployment.Spec.Selector)
Expect(err).NotTo(HaveOccurred())
options := api.ListOptions{LabelSelector: selector}
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))
}
func testScalePausedDeployment(f *framework.Framework) {
ns := f.Namespace.Name
c := f.ClientSet
podLabels := map[string]string{"name": nginxImageName}