Merge pull request #55705 from krzysztof-jastrzebski/e2e

Automatic merge from submit-queue (batch tested with PRs 54556, 55379, 55881, 55891, 55705). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Adds node auto-repair e2e tests.

This PR adds node auto-repair e2e tests.

test/e2e/lifecycle/BUILD

@@ -12,6 +12,7 @@ go_library(
         "cluster_upgrade.go",
         "framework.go",
         "ha_master.go",
+        "node_auto_repairs.go",
         "reboot.go",
         "resize_nodes.go",
         "restart.go",
@@ -31,6 +32,7 @@ go_library(
         "//test/utils:go_default_library",
         "//test/utils/image:go_default_library",
         "//test/utils/junit:go_default_library",
+        "//vendor/github.com/golang/glog:go_default_library",
         "//vendor/github.com/onsi/ginkgo:go_default_library",
         "//vendor/github.com/onsi/gomega:go_default_library",
         "//vendor/golang.org/x/crypto/ssh:go_default_library",

test/e2e/lifecycle/node_auto_repairs.go

@@ -0,0 +1,166 @@
+/*
+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 lifecycle
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+	"time"
+
+	"k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/kubernetes/test/e2e/framework"
+
+	"github.com/golang/glog"
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+const (
+	defaultTimeout = 3 * time.Minute
+	repairTimeout  = 20 * time.Minute
+)
+
+var _ = SIGDescribe("Node Auto Repairs [Slow] [Disruptive]", func() {
+	f := framework.NewDefaultFramework("lifecycle")
+	var c clientset.Interface
+	var originalNodes map[string]string
+	var nodeCount int
+
+	BeforeEach(func() {
+		framework.SkipUnlessProviderIs("gke")
+		c = f.ClientSet
+		nodeCount = 0
+		originalNodes = make(map[string]string)
+		for _, groupName := range strings.Split(framework.TestContext.CloudConfig.NodeInstanceGroup, ",") {
+			glog.Infof("Processing group %s", groupName)
+			nodes, err := framework.GetGroupNodes(groupName)
+			framework.ExpectNoError(err)
+			for _, node := range nodes {
+				nodeReady, err := isNodeReady(c, node)
+				framework.ExpectNoError(err)
+				Expect(nodeReady).To(Equal(true))
+				originalNodes[groupName] = node
+				nodeCount++
+			}
+		}
+		glog.Infof("Number of nodes %d", nodeCount)
+	})
+
+	AfterEach(func() {
+		framework.SkipUnlessProviderIs("gke")
+		By(fmt.Sprintf("Restoring initial size of the cluster"))
+		for groupName, nodeName := range originalNodes {
+			nodeReady, err := isNodeReady(c, nodeName)
+			framework.ExpectNoError(err)
+			if !nodeReady {
+				framework.ExpectNoError(recreateNode(nodeName, groupName))
+			}
+		}
+		framework.ExpectNoError(framework.WaitForAllNodesSchedulable(c, defaultTimeout))
+	})
+
+	It("should repair node [Feature:NodeAutoRepairs]", func() {
+		framework.SkipUnlessProviderIs("gke")
+		framework.ExpectNoError(enableAutoRepair("default-pool"))
+		defer disableAutoRepair("default-pool")
+		readyNodes := getReadyNodes(c)
+		Expect(len(readyNodes)).NotTo(Equal(0))
+		nodeName := readyNodes[0].Name
+		framework.ExpectNoError(stopKubeletOnNode(nodeName))
+		By("Wait till node is unready.")
+		Expect(framework.WaitForNodeToBeNotReady(c, nodeName, defaultTimeout)).To(Equal(true))
+		By("Wait till node is repaired.")
+		Expect(framework.WaitForNodeToBeReady(c, nodeName, repairTimeout)).To(Equal(true))
+	})
+})
+
+func execCmd(args ...string) *exec.Cmd {
+	glog.Infof("Executing: %s", strings.Join(args, " "))
+	return exec.Command(args[0], args[1:]...)
+}
+
+func getReadyNodes(c clientset.Interface) []v1.Node {
+	nodeList := framework.GetReadySchedulableNodesOrDie(c)
+	return nodeList.Items
+}
+
+func enableAutoRepair(nodePool string) error {
+	glog.Infof("Using gcloud to enable auto repair for pool %s", nodePool)
+	output, err := execCmd("gcloud", "beta", "container", "node-pools", "update", nodePool,
+		"--enable-autorepair",
+		"--project="+framework.TestContext.CloudConfig.ProjectID,
+		"--zone="+framework.TestContext.CloudConfig.Zone,
+		"--cluster="+framework.TestContext.CloudConfig.Cluster).CombinedOutput()
+	if err != nil {
+		glog.Errorf("Failed to enable auto repair: %s", string(output))
+		return fmt.Errorf("failed to enable auto repair: %v", err)
+	}
+	return nil
+}
+
+func disableAutoRepair(nodePool string) error {
+	glog.Infof("Using gcloud to disable auto repair for pool %s", nodePool)
+	output, err := execCmd("gcloud", "beta", "container", "node-pools", "update", nodePool,
+		"--no-enable-autorepair",
+		"--project="+framework.TestContext.CloudConfig.ProjectID,
+		"--zone="+framework.TestContext.CloudConfig.Zone,
+		"--cluster="+framework.TestContext.CloudConfig.Cluster).CombinedOutput()
+	if err != nil {
+		glog.Errorf("Failed to disable auto repair: %s", string(output))
+		return fmt.Errorf("failed to disable auto repair: %v", err)
+	}
+	return nil
+}
+
+func stopKubeletOnNode(node string) error {
+	glog.Infof("Using gcloud to stop Kublet on node %s", node)
+	output, err := execCmd("gcloud", "compute", "ssh", node,
+		"--command=sudo systemctl stop kubelet-monitor.service && sudo systemctl stop kubelet.service",
+		"--zone="+framework.TestContext.CloudConfig.Zone).CombinedOutput()
+	if err != nil {
+		glog.Errorf("Failed to stop Kubelet: %v", string(output))
+		return fmt.Errorf("failed to stop Kubelet: %v", err)
+	}
+	return nil
+}
+
+func recreateNode(nodeName string, groupName string) error {
+	glog.Infof("Using gcloud to recreate node %s", nodeName)
+	//gcloud compute instance-groups managed recreate-instances gke-oneoff-default-pool-e4383993-grp --instances=gke-oneoff-default-pool-e4383993-81jm --zone=us-central1-c
+	output, err := execCmd("gcloud", "compute", "instance-groups", "managed", "recreate-instances", groupName,
+		"--instances="+nodeName,
+		"--zone="+framework.TestContext.CloudConfig.Zone).CombinedOutput()
+	if err != nil {
+		glog.Errorf("Failed to recreate node: %s", string(output))
+		return fmt.Errorf("failed to recreate node: %v", err)
+	}
+	return nil
+}
+
+func isNodeReady(c clientset.Interface, nodeName string) (bool, error) {
+	glog.Infof("Check if node %s is ready ", nodeName)
+	node, err := c.CoreV1().Nodes().Get(nodeName, metav1.GetOptions{})
+	if err != nil {
+		return false, err
+	}
+	result := framework.IsNodeConditionSetAsExpected(node, v1.NodeReady, true)
+	glog.Infof("Node %s is ready: %t", nodeName, result)
+	return result, nil
+}