mirror of https://github.com/k3s-io/k3s
328 lines
12 KiB
Go
328 lines
12 KiB
Go
package snapshotrestore
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import (
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"flag"
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"fmt"
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"os"
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"strings"
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"testing"
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"time"
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"github.com/k3s-io/k3s/tests/e2e"
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. "github.com/onsi/ginkgo/v2"
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. "github.com/onsi/gomega"
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)
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// Valid nodeOS:
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// bento/ubuntu-24.04, opensuse/Leap-15.6.x86_64
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// eurolinux-vagrant/rocky-8, eurolinux-vagrant/rocky-9,
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var nodeOS = flag.String("nodeOS", "bento/ubuntu-24.04", "VM operating system")
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var serverCount = flag.Int("serverCount", 3, "number of server nodes")
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var agentCount = flag.Int("agentCount", 1, "number of agent nodes")
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var hardened = flag.Bool("hardened", false, "true or false")
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var ci = flag.Bool("ci", false, "running on CI")
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var local = flag.Bool("local", false, "deploy a locally built K3s binary")
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// Environment Variables Info:
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// E2E_RELEASE_VERSION=v1.23.1+k3s2 (default: latest commit from master)
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func Test_E2ESnapshotRestore(t *testing.T) {
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RegisterFailHandler(Fail)
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flag.Parse()
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suiteConfig, reporterConfig := GinkgoConfiguration()
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RunSpecs(t, "SnapshotRestore Test Suite", suiteConfig, reporterConfig)
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}
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var (
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kubeConfigFile string
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serverNodeNames []string
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agentNodeNames []string
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snapshotname string
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)
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var _ = ReportAfterEach(e2e.GenReport)
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var _ = Describe("Verify snapshots and cluster restores work", Ordered, func() {
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Context("Cluster creates snapshots and workloads:", func() {
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It("Starts up with no issues", func() {
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var err error
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if *local {
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serverNodeNames, agentNodeNames, err = e2e.CreateLocalCluster(*nodeOS, *serverCount, *agentCount)
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} else {
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serverNodeNames, agentNodeNames, err = e2e.CreateCluster(*nodeOS, *serverCount, *agentCount)
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}
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Expect(err).NotTo(HaveOccurred(), e2e.GetVagrantLog(err))
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fmt.Println("CLUSTER CONFIG")
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fmt.Println("OS:", *nodeOS)
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fmt.Println("Server Nodes:", serverNodeNames)
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fmt.Println("Agent Nodes:", agentNodeNames)
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kubeConfigFile, err = e2e.GenKubeConfigFile(serverNodeNames[0])
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Expect(err).NotTo(HaveOccurred())
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})
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It("Checks Node and Pod Status", func() {
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fmt.Printf("\nFetching node status\n")
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Eventually(func(g Gomega) {
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nodes, err := e2e.ParseNodes(kubeConfigFile, false)
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g.Expect(err).NotTo(HaveOccurred())
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for _, node := range nodes {
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g.Expect(node.Status).Should(Equal("Ready"))
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}
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}, "620s", "5s").Should(Succeed())
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_, _ = e2e.ParseNodes(kubeConfigFile, true)
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fmt.Printf("\nFetching Pods status\n")
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Eventually(func(g Gomega) {
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pods, err := e2e.ParsePods(kubeConfigFile, false)
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g.Expect(err).NotTo(HaveOccurred())
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for _, pod := range pods {
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if strings.Contains(pod.Name, "helm-install") {
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g.Expect(pod.Status).Should(Equal("Completed"), pod.Name)
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} else {
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g.Expect(pod.Status).Should(Equal("Running"), pod.Name)
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}
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}
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}, "620s", "5s").Should(Succeed())
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_, _ = e2e.ParsePods(kubeConfigFile, true)
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})
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It("Verifies test workload before snapshot is created", func() {
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res, err := e2e.DeployWorkload("clusterip.yaml", kubeConfigFile, *hardened)
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Expect(err).NotTo(HaveOccurred(), "Cluster IP manifest not deployed: "+res)
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Eventually(func(g Gomega) {
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cmd := "kubectl get pods -o=name -l k8s-app=nginx-app-clusterip --field-selector=status.phase=Running --kubeconfig=" + kubeConfigFile
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res, err := e2e.RunCommand(cmd)
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g.Expect(err).NotTo(HaveOccurred())
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g.Expect(res).Should((ContainSubstring("test-clusterip")), "failed cmd: "+cmd+" result: "+res)
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}, "240s", "5s").Should(Succeed())
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})
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It("Verifies Snapshot is created", func() {
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Eventually(func(g Gomega) {
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cmd := "k3s etcd-snapshot save"
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_, err := e2e.RunCmdOnNode(cmd, "server-0")
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g.Expect(err).NotTo(HaveOccurred())
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cmd = "ls /var/lib/rancher/k3s/server/db/snapshots/"
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snapshotname, err = e2e.RunCmdOnNode(cmd, "server-0")
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g.Expect(err).NotTo(HaveOccurred())
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fmt.Println("Snapshot Name", snapshotname)
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g.Expect(snapshotname).Should(ContainSubstring("on-demand-server-0"))
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}, "420s", "10s").Should(Succeed())
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})
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It("Verifies another test workload after snapshot is created", func() {
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_, err := e2e.DeployWorkload("nodeport.yaml", kubeConfigFile, *hardened)
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Expect(err).NotTo(HaveOccurred(), "NodePort manifest not deployed")
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Eventually(func(g Gomega) {
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cmd := "kubectl get pods -o=name -l k8s-app=nginx-app-nodeport --field-selector=status.phase=Running --kubeconfig=" + kubeConfigFile
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res, err := e2e.RunCommand(cmd)
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g.Expect(err).NotTo(HaveOccurred())
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g.Expect(res).Should(ContainSubstring("test-nodeport"), "nodeport pod was not created")
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}, "240s", "5s").Should(Succeed())
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})
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})
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Context("Cluster is reset normally", func() {
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It("Resets the cluster", func() {
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for _, nodeName := range serverNodeNames {
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cmd := "systemctl stop k3s"
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Expect(e2e.RunCmdOnNode(cmd, nodeName)).Error().NotTo(HaveOccurred())
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if nodeName != serverNodeNames[0] {
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cmd = "k3s-killall.sh"
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Expect(e2e.RunCmdOnNode(cmd, nodeName)).Error().NotTo(HaveOccurred())
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}
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}
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cmd := "k3s server --cluster-reset"
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res, err := e2e.RunCmdOnNode(cmd, serverNodeNames[0])
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Expect(err).NotTo(HaveOccurred())
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Expect(res).Should(ContainSubstring("Managed etcd cluster membership has been reset, restart without --cluster-reset flag now"))
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cmd = "systemctl start k3s"
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Expect(e2e.RunCmdOnNode(cmd, serverNodeNames[0])).Error().NotTo(HaveOccurred())
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})
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It("Resets non bootstrap nodes", func() {
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for _, nodeName := range serverNodeNames {
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if nodeName != serverNodeNames[0] {
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cmd := "k3s server --cluster-reset"
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response, err := e2e.RunCmdOnNode(cmd, nodeName)
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Expect(err).NotTo(HaveOccurred())
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Expect(response).Should(ContainSubstring("Managed etcd cluster membership has been reset, restart without --cluster-reset flag now"))
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}
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}
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})
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It("Checks that other servers are not ready", func() {
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fmt.Printf("\nFetching node status\n")
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Eventually(func(g Gomega) {
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nodes, err := e2e.ParseNodes(kubeConfigFile, false)
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g.Expect(err).NotTo(HaveOccurred())
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for _, node := range nodes {
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if strings.Contains(node.Name, serverNodeNames[0]) || strings.Contains(node.Name, "agent-") {
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g.Expect(node.Status).Should(Equal("Ready"))
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} else {
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g.Expect(node.Status).Should(Equal("NotReady"))
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}
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}
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}, "240s", "5s").Should(Succeed())
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_, _ = e2e.ParseNodes(kubeConfigFile, true)
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})
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It("Rejoins other servers to cluster", func() {
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// We must remove the db directory on the other servers before restarting k3s
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// otherwise the nodes may join the old cluster
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for _, nodeName := range serverNodeNames[1:] {
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cmd := "rm -rf /var/lib/rancher/k3s/server/db"
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Expect(e2e.RunCmdOnNode(cmd, nodeName)).Error().NotTo(HaveOccurred())
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}
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for _, nodeName := range serverNodeNames[1:] {
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cmd := "systemctl start k3s"
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Expect(e2e.RunCmdOnNode(cmd, nodeName)).Error().NotTo(HaveOccurred())
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time.Sleep(20 * time.Second) //Stagger the restarts for etcd leaners
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}
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})
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It("Checks that all nodes and pods are ready", func() {
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Eventually(func(g Gomega) {
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nodes, err := e2e.ParseNodes(kubeConfigFile, false)
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g.Expect(err).NotTo(HaveOccurred())
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for _, node := range nodes {
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nodeJournal, _ := e2e.GetJournalLogs(node.Name)
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g.Expect(node.Status).Should(Equal("Ready"), nodeJournal)
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}
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}, "420s", "5s").Should(Succeed())
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_, _ = e2e.ParseNodes(kubeConfigFile, true)
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fmt.Printf("\nFetching Pods status\n")
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Eventually(func(g Gomega) {
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pods, err := e2e.ParsePods(kubeConfigFile, false)
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g.Expect(err).NotTo(HaveOccurred())
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for _, pod := range pods {
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if strings.Contains(pod.Name, "helm-install") {
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g.Expect(pod.Status).Should(Equal("Completed"), pod.Name)
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} else {
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g.Expect(pod.Status).Should(Equal("Running"), pod.Name)
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}
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}
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}, "420s", "5s").Should(Succeed())
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})
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It("Verifies that workload1 and workload1 exist", func() {
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cmd := "kubectl get pods --kubeconfig=" + kubeConfigFile
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res, err := e2e.RunCommand(cmd)
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Expect(err).NotTo(HaveOccurred())
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Expect(res).Should(ContainSubstring("test-clusterip"))
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Expect(res).Should(ContainSubstring("test-nodeport"))
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})
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})
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Context("Cluster restores from snapshot", func() {
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It("Restores the snapshot", func() {
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//Stop k3s on all nodes
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for _, nodeName := range serverNodeNames {
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cmd := "systemctl stop k3s"
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Expect(e2e.RunCmdOnNode(cmd, nodeName)).Error().NotTo(HaveOccurred())
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if nodeName != serverNodeNames[0] {
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cmd = "k3s-killall.sh"
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Expect(e2e.RunCmdOnNode(cmd, nodeName)).Error().NotTo(HaveOccurred())
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}
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}
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//Restores from snapshot on server-0
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cmd := "k3s server --cluster-init --cluster-reset --cluster-reset-restore-path=/var/lib/rancher/k3s/server/db/snapshots/" + snapshotname
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res, err := e2e.RunCmdOnNode(cmd, serverNodeNames[0])
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Expect(err).NotTo(HaveOccurred())
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Expect(res).Should(ContainSubstring("Managed etcd cluster membership has been reset, restart without --cluster-reset flag now"))
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cmd = "systemctl start k3s"
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Expect(e2e.RunCmdOnNode(cmd, serverNodeNames[0])).Error().NotTo(HaveOccurred())
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})
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It("Checks that other servers are not ready", func() {
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fmt.Printf("\nFetching node status\n")
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Eventually(func(g Gomega) {
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nodes, err := e2e.ParseNodes(kubeConfigFile, false)
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g.Expect(err).NotTo(HaveOccurred())
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for _, node := range nodes {
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if strings.Contains(node.Name, serverNodeNames[0]) || strings.Contains(node.Name, "agent-") {
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g.Expect(node.Status).Should(Equal("Ready"))
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} else {
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g.Expect(node.Status).Should(Equal("NotReady"))
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}
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}
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}, "240s", "5s").Should(Succeed())
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_, _ = e2e.ParseNodes(kubeConfigFile, true)
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})
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It("Rejoins other servers to cluster", func() {
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// We must remove the db directory on the other servers before restarting k3s
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// otherwise the nodes may join the old cluster
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for _, nodeName := range serverNodeNames[1:] {
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cmd := "rm -rf /var/lib/rancher/k3s/server/db"
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Expect(e2e.RunCmdOnNode(cmd, nodeName)).Error().NotTo(HaveOccurred())
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}
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for _, nodeName := range serverNodeNames[1:] {
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cmd := "systemctl start k3s"
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Expect(e2e.RunCmdOnNode(cmd, nodeName)).Error().NotTo(HaveOccurred())
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}
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})
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It("Checks that all nodes and pods are ready", func() {
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//Verifies node is up and pods running
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fmt.Printf("\nFetching node status\n")
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Eventually(func(g Gomega) {
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nodes, err := e2e.ParseNodes(kubeConfigFile, false)
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g.Expect(err).NotTo(HaveOccurred())
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for _, node := range nodes {
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g.Expect(node.Status).Should(Equal("Ready"))
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}
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}, "420s", "5s").Should(Succeed())
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_, _ = e2e.ParseNodes(kubeConfigFile, true)
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fmt.Printf("\nFetching Pods status\n")
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Eventually(func(g Gomega) {
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pods, err := e2e.ParsePods(kubeConfigFile, false)
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g.Expect(err).NotTo(HaveOccurred())
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for _, pod := range pods {
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if strings.Contains(pod.Name, "helm-install") {
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g.Expect(pod.Status).Should(Equal("Completed"), pod.Name)
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} else {
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g.Expect(pod.Status).Should(Equal("Running"), pod.Name)
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}
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}
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}, "620s", "5s").Should(Succeed())
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_, _ = e2e.ParsePods(kubeConfigFile, true)
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})
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It("Verifies that workload1 exists and workload2 does not", func() {
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cmd := "kubectl get pods --kubeconfig=" + kubeConfigFile
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res, err := e2e.RunCommand(cmd)
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Expect(err).NotTo(HaveOccurred())
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Expect(res).Should(ContainSubstring("test-clusterip"))
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Expect(res).ShouldNot(ContainSubstring("test-nodeport"))
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})
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})
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})
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var failed bool
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var _ = AfterEach(func() {
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failed = failed || CurrentSpecReport().Failed()
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})
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var _ = AfterSuite(func() {
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if !failed {
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Expect(e2e.GetCoverageReport(append(serverNodeNames, agentNodeNames...))).To(Succeed())
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}
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if !failed || *ci {
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Expect(e2e.DestroyCluster()).To(Succeed())
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Expect(os.Remove(kubeConfigFile)).To(Succeed())
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}
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})
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