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Merge pull request #43818 from kargakis/reduce-deployment-replicas

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Automatic merge from submit-queue (batch tested with PRs 41189, 43818)

Reduce deployment replicas in e2e tests

Fixes https://github.com/kubernetes/kubernetes/issues/41063

There are still two tests that run multiple replicas (testScaledRolloutDeployment, testIterativeDeployments), we may want to revisit them at some point.
This commit is contained in:
Kubernetes Submit Queue 2017-04-06 15:12:21 -07:00 committed by GitHub
commit aa1bd2b3e0
2 changed files with 58 additions and 27 deletions
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81
test/e2e/deployment.go
View File

@ -112,6 +112,11 @@ var _ = framework.KubeDescribe("Deployment", func() {
// See https://github.com/kubernetes/kubernetes/issues/29229
})
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,
@ -309,7 +314,7 @@ func testRecreateDeployment(f *framework.Framework) {
// Create a deployment that brings up redis pods.
deploymentName := "test-recreate-deployment"
By(fmt.Sprintf("Creating deployment %q", deploymentName))
d := framework.NewDeployment(deploymentName, int32(3), map[string]string{"name": "sample-pod-3"}, redisImageName, redisImage, extensions.RecreateDeploymentStrategyType)
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())
@ -350,7 +355,7 @@ func testDeploymentCleanUpPolicy(f *framework.Framework) {
Expect(err).NotTo(HaveOccurred())
// Verify that the required pods have come up.
err = framework.VerifyPodsRunning(c, ns, "cleanup-pod", false, 1)
err = framework.VerifyPodsRunning(c, ns, "cleanup-pod", false, replicas)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).NotTo(HaveOccurred())
@ -368,6 +373,7 @@ func testDeploymentCleanUpPolicy(f *framework.Framework) {
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() {
@ -404,7 +410,6 @@ func testDeploymentCleanUpPolicy(f *framework.Framework) {
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())
close(stopCh)
}
// testRolloverDeployment tests that deployment supports rollover.
@ -420,7 +425,7 @@ func testRolloverDeployment(f *framework.Framework) {
}
rsName := "test-rollover-controller"
rsReplicas := int32(3)
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.
@ -437,14 +442,14 @@ func testRolloverDeployment(f *framework.Framework) {
// 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(3)
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: func(i int) *intstr.IntOrString { x := intstr.FromInt(i); return &x }(1),
MaxSurge: func(i int) *intstr.IntOrString { x := intstr.FromInt(i); return &x }(1),
MaxUnavailable: intOrStrP(0),
MaxSurge: intOrStrP(1),
}
newDeployment.Spec.MinReadySeconds = int32(10)
_, err = c.Extensions().Deployments(ns).Create(newDeployment)
@ -455,14 +460,21 @@ func testRolloverDeployment(f *framework.Framework) {
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, 1, deployment.Generation)
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)
// 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))
framework.Logf("Make sure deployment %q with new image", deploymentName)
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
@ -483,8 +495,23 @@ func testRolloverDeployment(f *framework.Framework) {
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
@ -520,9 +547,8 @@ func testPausedDeployment(f *framework.Framework) {
Expect(err).NotTo(HaveOccurred())
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
Expect(err).NotTo(HaveOccurred())
}
Expect(err).NotTo(HaveOccurred())
opts := metav1.ListOptions{LabelSelector: selector.String()}
w, err := c.Extensions().ReplicaSets(ns).Watch(opts)
Expect(err).NotTo(HaveOccurred())
@ -829,12 +855,12 @@ func testDeploymentLabelAdopted(f *framework.Framework) {
podLabels := map[string]string{"name": podName}
rsName := "test-adopted-controller"
replicas := int32(3)
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, 3)
err = framework.VerifyPodsRunning(c, ns, podName, false, replicas)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).NotTo(HaveOccurred())
@ -875,12 +901,13 @@ func testDeploymentLabelAdopted(f *framework.Framework) {
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(3)
replicas := int32(0)
// Create a nginx deployment.
deploymentName := "nginx-deployment"
@ -896,18 +923,22 @@ func testScalePausedDeployment(f *framework.Framework) {
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
rs, err := deploymentutil.GetNewReplicaSet(deployment, c)
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(5)
newReplicas := int32(1)
deployment, err = framework.UpdateDeploymentWithRetries(c, ns, deployment.Name, func(update *extensions.Deployment) {
update.Spec.Replicas = &newReplicas
})
@ -916,7 +947,7 @@ func testScalePausedDeployment(f *framework.Framework) {
err = framework.WaitForObservedDeployment(c, ns, deploymentName, deployment.Generation)
Expect(err).NotTo(HaveOccurred())
rs, err = deploymentutil.GetNewReplicaSet(deployment, c)
rs, err := deploymentutil.GetNewReplicaSet(deployment, c)
Expect(err).NotTo(HaveOccurred())
if *(rs.Spec.Replicas) != newReplicas {
@ -936,8 +967,8 @@ func testScaledRolloutDeployment(f *framework.Framework) {
deploymentName := "nginx"
d := framework.NewDeployment(deploymentName, replicas, podLabels, nginxImageName, nginxImage, extensions.RollingUpdateDeploymentStrategyType)
d.Spec.Strategy.RollingUpdate = new(extensions.RollingUpdateDeployment)
d.Spec.Strategy.RollingUpdate.MaxSurge = func(i int) *intstr.IntOrString { x := intstr.FromInt(i); return &x }(3)
d.Spec.Strategy.RollingUpdate.MaxUnavailable = func(i int) *intstr.IntOrString { x := intstr.FromInt(i); return &x }(2)
d.Spec.Strategy.RollingUpdate.MaxSurge = intOrStrP(3)
d.Spec.Strategy.RollingUpdate.MaxUnavailable = intOrStrP(2)
By(fmt.Sprintf("Creating deployment %q", deploymentName))
deployment, err := c.Extensions().Deployments(ns).Create(d)
@ -1136,7 +1167,7 @@ func testFailedDeployment(f *framework.Framework) {
Expect(err).NotTo(HaveOccurred())
framework.Logf("Waiting for deployment %q new replica set to come up", deploymentName)
Expect(framework.WaitForDeploymentUpdatedReplicasLTE(c, ns, deploymentName, 1, deployment.Generation))
Expect(framework.WaitForDeploymentUpdatedReplicasLTE(c, ns, deploymentName, replicas, deployment.Generation))
framework.Logf("Checking deployment %q for a timeout condition", deploymentName)
Expect(framework.WaitForDeploymentWithCondition(c, ns, deploymentName, deploymentutil.TimedOutReason, extensions.DeploymentProgressing)).NotTo(HaveOccurred())
@ -1148,7 +1179,7 @@ func testFailedDeployment(f *framework.Framework) {
Expect(err).NotTo(HaveOccurred())
framework.Logf("Waiting for deployment %q new replica set to come up", deploymentName)
Expect(framework.WaitForDeploymentUpdatedReplicasLTE(c, ns, deploymentName, 1, deployment.Generation))
Expect(framework.WaitForDeploymentUpdatedReplicasLTE(c, ns, deploymentName, replicas, deployment.Generation))
framework.Logf("Waiting for deployment %q status", deploymentName)
Expect(framework.WaitForDeploymentStatusValid(c, deployment)).NotTo(HaveOccurred())

4
test/e2e/framework/util.go
View File

@ -3361,13 +3361,13 @@ func waitForDeploymentStatus(c clientset.Interface, d *extensions.Deployment, v1
}
// WaitForDeploymentUpdatedReplicasLTE waits for given deployment to be observed by the controller and has at least a number of updatedReplicas
func WaitForDeploymentUpdatedReplicasLTE(c clientset.Interface, ns, deploymentName string, minUpdatedReplicas int, desiredGeneration int64) error {
func WaitForDeploymentUpdatedReplicasLTE(c clientset.Interface, ns, deploymentName string, minUpdatedReplicas int32, desiredGeneration int64) error {
err := wait.Poll(Poll, 5*time.Minute, func() (bool, error) {
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName, metav1.GetOptions{})
if err != nil {
return false, err
}
if deployment.Status.ObservedGeneration >= desiredGeneration && deployment.Status.UpdatedReplicas >= int32(minUpdatedReplicas) {
if deployment.Status.ObservedGeneration >= desiredGeneration && deployment.Status.UpdatedReplicas >= minUpdatedReplicas {
return true, nil
}
return false, nil