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Add integration test for deployment rolling update, rollback, rollover

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This commit is contained in:
Janet Kuo 2017-10-30 14:43:27 -07:00
parent 98d26aeb23
commit 26afcdbe73
2 changed files with 116 additions and 0 deletions
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1
test/integration/deployment/BUILD
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@ -22,6 +22,7 @@ go_test(
"//vendor/k8s.io/api/core/v1:go_default_library",
"//vendor/k8s.io/api/extensions/v1beta1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/intstr:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
],
)

115
test/integration/deployment/deployment_test.go
View File

@ -25,6 +25,7 @@ import (
"k8s.io/api/core/v1"
"k8s.io/api/extensions/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/wait"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
"k8s.io/kubernetes/test/integration/framework"
@ -79,6 +80,120 @@ func TestNewDeployment(t *testing.T) {
}
}
// Deployments should support roll out, roll back, and roll over
func TestDeploymentRollingUpdate(t *testing.T) {
s, closeFn, rm, dc, informers, c := dcSetup(t)
defer closeFn()
name := "test-rolling-update-deployment"
ns := framework.CreateTestingNamespace(name, s, t)
defer framework.DeleteTestingNamespace(ns, s, t)
// Start informer and controllers
stopCh := make(chan struct{})
defer close(stopCh)
informers.Start(stopCh)
go rm.Run(5, stopCh)
go dc.Run(5, stopCh)
replicas := int32(20)
tester := &deploymentTester{t: t, c: c, deployment: newDeployment(name, ns.Name, replicas)}
tester.deployment.Spec.MinReadySeconds = 4
quarter := intstr.FromString("25%")
tester.deployment.Spec.Strategy.RollingUpdate = &v1beta1.RollingUpdateDeployment{
MaxUnavailable: &quarter,
MaxSurge: &quarter,
}
// Create a deployment.
var err error
tester.deployment, err = c.ExtensionsV1beta1().Deployments(ns.Name).Create(tester.deployment)
if err != nil {
t.Fatalf("failed to create deployment %s: %v", tester.deployment.Name, err)
}
oriImage := tester.deployment.Spec.Template.Spec.Containers[0].Image
if err := tester.waitForDeploymentRevisionAndImage("1", oriImage); err != nil {
t.Fatal(err)
}
if err := tester.waitForDeploymentCompleteAndMarkPodsReady(); err != nil {
t.Fatal(err)
}
// 1. Roll out a new image.
image := "new-image"
if oriImage == image {
t.Fatalf("bad test setup, deployment %s roll out with the same image", tester.deployment.Name)
}
imageFn := func(update *v1beta1.Deployment) {
update.Spec.Template.Spec.Containers[0].Image = image
}
tester.deployment, err = tester.updateDeployment(imageFn)
if err != nil {
t.Fatalf("failed to update deployment %s: %v", tester.deployment.Name, err)
}
if err := tester.waitForDeploymentRevisionAndImage("2", image); err != nil {
t.Fatal(err)
}
if err := tester.waitForDeploymentCompleteAndCheckRollingAndMarkPodsReady(); err != nil {
t.Fatal(err)
}
// 2. Roll back to the last revision.
revision := int64(0)
rollback := newDeploymentRollback(tester.deployment.Name, nil, revision)
if err = c.ExtensionsV1beta1().Deployments(ns.Name).Rollback(rollback); err != nil {
t.Fatalf("failed to roll back deployment %s to last revision: %v", tester.deployment.Name, err)
}
// Wait for the deployment to start rolling back
if err = tester.waitForDeploymentRollbackCleared(); err != nil {
t.Fatalf("failed to roll back deployment %s to last revision: %v", tester.deployment.Name, err)
}
// Wait for the deployment to be rolled back to the template stored in revision 1 and rolled forward to revision 3.
if err := tester.waitForDeploymentRevisionAndImage("3", oriImage); err != nil {
t.Fatal(err)
}
if err := tester.waitForDeploymentCompleteAndCheckRollingAndMarkPodsReady(); err != nil {
t.Fatal(err)
}
// 3. Roll over a deployment before the previous rolling update finishes.
image = "dont-finish"
imageFn = func(update *v1beta1.Deployment) {
update.Spec.Template.Spec.Containers[0].Image = image
}
tester.deployment, err = tester.updateDeployment(imageFn)
if err != nil {
t.Fatalf("failed to update deployment %s: %v", tester.deployment.Name, err)
}
if err := tester.waitForDeploymentRevisionAndImage("4", image); err != nil {
t.Fatal(err)
}
// We don't mark pods as ready so that rollout won't finish.
// Before the rollout finishes, trigger another rollout.
image = "rollover"
imageFn = func(update *v1beta1.Deployment) {
update.Spec.Template.Spec.Containers[0].Image = image
}
tester.deployment, err = tester.updateDeployment(imageFn)
if err != nil {
t.Fatalf("failed to update deployment %s: %v", tester.deployment.Name, err)
}
if err := tester.waitForDeploymentRevisionAndImage("5", image); err != nil {
t.Fatal(err)
}
if err := tester.waitForDeploymentCompleteAndCheckRollingAndMarkPodsReady(); err != nil {
t.Fatal(err)
}
_, allOldRSs, err := deploymentutil.GetOldReplicaSets(tester.deployment, c.ExtensionsV1beta1())
if err != nil {
t.Fatalf("failed retrieving old replicasets of deployment %s: %v", tester.deployment.Name, err)
}
for _, oldRS := range allOldRSs {
if *oldRS.Spec.Replicas != 0 {
t.Errorf("expected old replicaset %s of deployment %s to have 0 replica, got %d", oldRS.Name, tester.deployment.Name, *oldRS.Spec.Replicas)
}
}
}
// selectors are IMMUTABLE for all API versions except apps/v1beta1 and extensions/v1beta1
func TestDeploymentSelectorImmutability(t *testing.T) {
s, closeFn, c := dcSimpleSetup(t)