231 lines
8.2 KiB
Go
231 lines
8.2 KiB
Go
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/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package e2e
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import (
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"fmt"
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"path"
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"strings"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/kubernetes/pkg/api/v1"
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"k8s.io/kubernetes/pkg/client/clientset_generated/clientset"
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"k8s.io/kubernetes/test/e2e/chaosmonkey"
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"k8s.io/kubernetes/test/e2e/framework"
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. "github.com/onsi/ginkgo"
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)
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// TODO(mikedanese): Add setup, validate, and teardown for:
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// - secrets
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// - volumes
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// - persistent volumes
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var _ = framework.KubeDescribe("Upgrade [Feature:Upgrade]", func() {
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f := framework.NewDefaultFramework("cluster-upgrade")
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framework.KubeDescribe("master upgrade", func() {
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It("should maintain responsive services [Feature:MasterUpgrade]", func() {
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cm := chaosmonkey.New(func() {
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v, err := realVersion(framework.TestContext.UpgradeTarget)
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framework.ExpectNoError(err)
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framework.ExpectNoError(framework.MasterUpgrade(v))
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framework.ExpectNoError(checkMasterVersion(f.ClientSet, v))
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})
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cm.Register(func(sem *chaosmonkey.Semaphore) {
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// Close over f.
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testServiceRemainsUp(f, sem)
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})
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cm.Do()
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})
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})
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framework.KubeDescribe("node upgrade", func() {
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It("should maintain a functioning cluster [Feature:NodeUpgrade]", func() {
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cm := chaosmonkey.New(func() {
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v, err := realVersion(framework.TestContext.UpgradeTarget)
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framework.ExpectNoError(err)
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framework.ExpectNoError(framework.NodeUpgrade(f, v, framework.TestContext.UpgradeImage))
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framework.ExpectNoError(checkNodesVersions(f.ClientSet, v))
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})
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cm.Register(func(sem *chaosmonkey.Semaphore) {
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// Close over f.
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testServiceUpBeforeAndAfter(f, sem)
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})
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cm.Do()
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})
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It("should maintain responsive services [Feature:ExperimentalNodeUpgrade]", func() {
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cm := chaosmonkey.New(func() {
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v, err := realVersion(framework.TestContext.UpgradeTarget)
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framework.ExpectNoError(err)
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framework.ExpectNoError(framework.NodeUpgrade(f, v, framework.TestContext.UpgradeImage))
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framework.ExpectNoError(checkNodesVersions(f.ClientSet, v))
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})
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cm.Register(func(sem *chaosmonkey.Semaphore) {
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// Close over f.
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testServiceRemainsUp(f, sem)
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})
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cm.Do()
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})
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})
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framework.KubeDescribe("cluster upgrade", func() {
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It("should maintain a functioning cluster [Feature:ClusterUpgrade]", func() {
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cm := chaosmonkey.New(func() {
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v, err := realVersion(framework.TestContext.UpgradeTarget)
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framework.ExpectNoError(err)
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framework.ExpectNoError(framework.MasterUpgrade(v))
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framework.ExpectNoError(checkMasterVersion(f.ClientSet, v))
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framework.ExpectNoError(framework.NodeUpgrade(f, v, framework.TestContext.UpgradeImage))
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framework.ExpectNoError(checkNodesVersions(f.ClientSet, v))
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})
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cm.Register(func(sem *chaosmonkey.Semaphore) {
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// Close over f.
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testServiceUpBeforeAndAfter(f, sem)
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})
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cm.Do()
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})
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It("should maintain responsive services [Feature:ExperimentalClusterUpgrade]", func() {
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cm := chaosmonkey.New(func() {
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v, err := realVersion(framework.TestContext.UpgradeTarget)
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framework.ExpectNoError(err)
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framework.ExpectNoError(framework.MasterUpgrade(v))
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framework.ExpectNoError(checkMasterVersion(f.ClientSet, v))
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framework.ExpectNoError(framework.NodeUpgrade(f, v, framework.TestContext.UpgradeImage))
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framework.ExpectNoError(checkNodesVersions(f.ClientSet, v))
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})
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cm.Register(func(sem *chaosmonkey.Semaphore) {
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// Close over f.
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testServiceRemainsUp(f, sem)
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})
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cm.Do()
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})
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})
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})
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// realVersion turns a version constant s into a version string deployable on
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// GKE. See hack/get-build.sh for more information.
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func realVersion(s string) (string, error) {
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framework.Logf(fmt.Sprintf("Getting real version for %q", s))
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v, _, err := framework.RunCmd(path.Join(framework.TestContext.RepoRoot, "hack/get-build.sh"), "-v", s)
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if err != nil {
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return v, err
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}
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framework.Logf("Version for %q is %q", s, v)
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return strings.TrimPrefix(strings.TrimSpace(v), "v"), nil
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}
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func testServiceUpBeforeAndAfter(f *framework.Framework, sem *chaosmonkey.Semaphore) {
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testService(f, sem, false)
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}
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func testServiceRemainsUp(f *framework.Framework, sem *chaosmonkey.Semaphore) {
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testService(f, sem, true)
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}
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// testService is a helper for testServiceUpBeforeAndAfter and testServiceRemainsUp with a flag for testDuringDisruption
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//
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// TODO(ihmccreery) remove this abstraction once testServiceUpBeforeAndAfter is no longer needed, because node upgrades
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// maintain a responsive service.
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func testService(f *framework.Framework, sem *chaosmonkey.Semaphore, testDuringDisruption bool) {
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// Setup
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serviceName := "service-test"
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jig := framework.NewServiceTestJig(f.ClientSet, serviceName)
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// nodeIP := framework.PickNodeIP(jig.Client) // for later
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By("creating a TCP service " + serviceName + " with type=LoadBalancer in namespace " + f.Namespace.Name)
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// TODO it's weird that we have to do this and then wait WaitForLoadBalancer which changes
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// tcpService.
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tcpService := jig.CreateTCPServiceOrFail(f.Namespace.Name, func(s *v1.Service) {
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s.Spec.Type = v1.ServiceTypeLoadBalancer
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})
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tcpService = jig.WaitForLoadBalancerOrFail(f.Namespace.Name, tcpService.Name, framework.LoadBalancerCreateTimeoutDefault)
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jig.SanityCheckService(tcpService, v1.ServiceTypeLoadBalancer)
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// Get info to hit it with
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tcpIngressIP := framework.GetIngressPoint(&tcpService.Status.LoadBalancer.Ingress[0])
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svcPort := int(tcpService.Spec.Ports[0].Port)
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By("creating pod to be part of service " + serviceName)
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// TODO newRCTemplate only allows for the creation of one replica... that probably won't
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// work so well.
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jig.RunOrFail(f.Namespace.Name, nil)
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// Hit it once before considering ourselves ready
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By("hitting the pod through the service's LoadBalancer")
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jig.TestReachableHTTP(tcpIngressIP, svcPort, framework.LoadBalancerLagTimeoutDefault)
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sem.Ready()
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if testDuringDisruption {
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// Continuous validation
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wait.Until(func() {
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By("hitting the pod through the service's LoadBalancer")
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jig.TestReachableHTTP(tcpIngressIP, svcPort, framework.Poll)
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}, framework.Poll, sem.StopCh)
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} else {
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// Block until chaosmonkey is done
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By("waiting for upgrade to finish without checking if service remains up")
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<-sem.StopCh
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}
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// Sanity check and hit it once more
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By("hitting the pod through the service's LoadBalancer")
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jig.TestReachableHTTP(tcpIngressIP, svcPort, framework.LoadBalancerLagTimeoutDefault)
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jig.SanityCheckService(tcpService, v1.ServiceTypeLoadBalancer)
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}
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func checkMasterVersion(c clientset.Interface, want string) error {
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framework.Logf("Checking master version")
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v, err := c.Discovery().ServerVersion()
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if err != nil {
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return fmt.Errorf("checkMasterVersion() couldn't get the master version: %v", err)
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}
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// We do prefix trimming and then matching because:
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// want looks like: 0.19.3-815-g50e67d4
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// got looks like: v0.19.3-815-g50e67d4034e858-dirty
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got := strings.TrimPrefix(v.GitVersion, "v")
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if !strings.HasPrefix(got, want) {
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return fmt.Errorf("master had kube-apiserver version %s which does not start with %s",
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got, want)
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}
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framework.Logf("Master is at version %s", want)
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return nil
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}
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func checkNodesVersions(cs clientset.Interface, want string) error {
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l := framework.GetReadySchedulableNodesOrDie(cs)
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for _, n := range l.Items {
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// We do prefix trimming and then matching because:
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// want looks like: 0.19.3-815-g50e67d4
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// kv/kvp look like: v0.19.3-815-g50e67d4034e858-dirty
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kv, kpv := strings.TrimPrefix(n.Status.NodeInfo.KubeletVersion, "v"),
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strings.TrimPrefix(n.Status.NodeInfo.KubeProxyVersion, "v")
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if !strings.HasPrefix(kv, want) {
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return fmt.Errorf("node %s had kubelet version %s which does not start with %s",
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n.ObjectMeta.Name, kv, want)
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}
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if !strings.HasPrefix(kpv, want) {
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return fmt.Errorf("node %s had kube-proxy version %s which does not start with %s",
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n.ObjectMeta.Name, kpv, want)
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}
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}
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return nil
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}
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