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deployments.go
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deployments.go
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/*
Copyright 2017 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 upgrades
import (
"fmt"
apps "k8s.io/api/apps/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
"k8s.io/kubernetes/test/e2e/framework"
e2edeploy "k8s.io/kubernetes/test/e2e/framework/deployment"
"k8s.io/kubernetes/test/e2e/upgrades"
"github.com/onsi/ginkgo"
"github.com/onsi/gomega"
imageutils "k8s.io/kubernetes/test/utils/image"
)
const (
deploymentName = "dp"
)
// TODO: Test that the deployment stays available during master (and maybe
// node and cluster upgrades).
// DeploymentUpgradeTest tests that a deployment is using the same replica
// sets before and after a cluster upgrade.
type DeploymentUpgradeTest struct {
oldDeploymentUID types.UID
oldRSUID types.UID
newRSUID types.UID
}
// Name returns the tracking name of the test.
func (DeploymentUpgradeTest) Name() string { return "[sig-apps] deployment-upgrade" }
// Setup creates a deployment and makes sure it has a new and an old replicaset running.
func (t *DeploymentUpgradeTest) Setup(f *framework.Framework) {
c := f.ClientSet
nginxImage := imageutils.GetE2EImage(imageutils.Nginx)
ns := f.Namespace.Name
deploymentClient := c.AppsV1().Deployments(ns)
rsClient := c.AppsV1().ReplicaSets(ns)
ginkgo.By(fmt.Sprintf("Creating a deployment %q with 1 replica in namespace %q", deploymentName, ns))
d := e2edeploy.NewDeployment(deploymentName, int32(1), map[string]string{"test": "upgrade"}, "nginx", nginxImage, apps.RollingUpdateDeploymentStrategyType)
deployment, err := deploymentClient.Create(d)
framework.ExpectNoError(err)
ginkgo.By(fmt.Sprintf("Waiting deployment %q to complete", deploymentName))
framework.ExpectNoError(e2edeploy.WaitForDeploymentComplete(c, deployment))
ginkgo.By(fmt.Sprintf("Getting replicaset revision 1 of deployment %q", deploymentName))
rsSelector, err := metav1.LabelSelectorAsSelector(d.Spec.Selector)
framework.ExpectNoError(err)
rsList, err := rsClient.List(metav1.ListOptions{LabelSelector: rsSelector.String()})
framework.ExpectNoError(err)
rss := rsList.Items
if len(rss) != 1 {
framework.ExpectNoError(fmt.Errorf("expected one replicaset, got %d", len(rss)))
}
t.oldRSUID = rss[0].UID
ginkgo.By(fmt.Sprintf("Waiting for revision of the deployment %q to become 1", deploymentName))
framework.ExpectNoError(e2edeploy.WaitForDeploymentRevision(c, deployment, "1"))
// Trigger a new rollout so that we have some history.
ginkgo.By(fmt.Sprintf("Triggering a new rollout for deployment %q", deploymentName))
deployment, err = e2edeploy.UpdateDeploymentWithRetries(c, ns, deploymentName, func(update *apps.Deployment) {
update.Spec.Template.Spec.Containers[0].Name = "updated-name"
})
framework.ExpectNoError(err)
ginkgo.By(fmt.Sprintf("Waiting deployment %q to complete", deploymentName))
framework.ExpectNoError(e2edeploy.WaitForDeploymentComplete(c, deployment))
ginkgo.By(fmt.Sprintf("Getting replicasets revision 1 and 2 of deployment %q", deploymentName))
rsList, err = rsClient.List(metav1.ListOptions{LabelSelector: rsSelector.String()})
framework.ExpectNoError(err)
rss = rsList.Items
if len(rss) != 2 {
framework.ExpectNoError(fmt.Errorf("expected 2 replicaset, got %d", len(rss)))
}
ginkgo.By(fmt.Sprintf("Checking replicaset of deployment %q that is created before rollout survives the rollout", deploymentName))
switch t.oldRSUID {
case rss[0].UID:
t.newRSUID = rss[1].UID
case rss[1].UID:
t.newRSUID = rss[0].UID
default:
framework.ExpectNoError(fmt.Errorf("old replicaset with UID %q does not survive rollout", t.oldRSUID))
}
ginkgo.By(fmt.Sprintf("Waiting for revision of the deployment %q to become 2", deploymentName))
framework.ExpectNoError(e2edeploy.WaitForDeploymentRevision(c, deployment, "2"))
t.oldDeploymentUID = deployment.UID
}
// Test checks whether the replicasets for a deployment are the same after an upgrade.
func (t *DeploymentUpgradeTest) Test(f *framework.Framework, done <-chan struct{}, upgrade upgrades.UpgradeType) {
// Block until upgrade is done
ginkgo.By(fmt.Sprintf("Waiting for upgrade to finish before checking replicasets for deployment %q", deploymentName))
<-done
c := f.ClientSet
ns := f.Namespace.Name
deploymentClient := c.AppsV1().Deployments(ns)
rsClient := c.AppsV1().ReplicaSets(ns)
deployment, err := deploymentClient.Get(deploymentName, metav1.GetOptions{})
framework.ExpectNoError(err)
ginkgo.By(fmt.Sprintf("Checking UID to verify deployment %q survives upgrade", deploymentName))
gomega.Expect(deployment.UID).To(gomega.Equal(t.oldDeploymentUID))
ginkgo.By(fmt.Sprintf("Verifying deployment %q does not create new replicasets", deploymentName))
rsSelector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
framework.ExpectNoError(err)
rsList, err := rsClient.List(metav1.ListOptions{LabelSelector: rsSelector.String()})
framework.ExpectNoError(err)
rss := rsList.Items
if len(rss) != 2 {
framework.ExpectNoError(fmt.Errorf("expected 2 replicaset, got %d", len(rss)))
}
switch t.oldRSUID {
case rss[0].UID:
gomega.Expect(rss[1].UID).To(gomega.Equal(t.newRSUID))
case rss[1].UID:
gomega.Expect(rss[0].UID).To(gomega.Equal(t.newRSUID))
default:
framework.ExpectNoError(fmt.Errorf("new replicasets are created during upgrade of deployment %q", deploymentName))
}
ginkgo.By(fmt.Sprintf("Verifying revision of the deployment %q is still 2", deploymentName))
gomega.Expect(deployment.Annotations[deploymentutil.RevisionAnnotation]).To(gomega.Equal("2"))
ginkgo.By(fmt.Sprintf("Waiting for deployment %q to complete adoption", deploymentName))
framework.ExpectNoError(e2edeploy.WaitForDeploymentComplete(c, deployment))
// Verify the upgraded deployment is active by scaling up the deployment by 1
ginkgo.By(fmt.Sprintf("Scaling up replicaset of deployment %q by 1", deploymentName))
_, err = e2edeploy.UpdateDeploymentWithRetries(c, ns, deploymentName, func(deployment *apps.Deployment) {
*deployment.Spec.Replicas = *deployment.Spec.Replicas + 1
})
framework.ExpectNoError(err)
ginkgo.By(fmt.Sprintf("Waiting for deployment %q to complete after scaling", deploymentName))
framework.ExpectNoError(e2edeploy.WaitForDeploymentComplete(c, deployment))
}
// Teardown cleans up any remaining resources.
func (t *DeploymentUpgradeTest) Teardown(f *framework.Framework) {
// rely on the namespace deletion to clean up everything
}