k3s/tests/e2e/validatecluster/validatecluster_test.go

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package validatecluster
import (
"flag"
"fmt"
"os"
"regexp"
"strings"
"testing"
"github.com/k3s-io/k3s/tests/e2e"
. "github.com/onsi/ginkgo/v2"
. "github.com/onsi/gomega"
)
// Valid nodeOS:
// generic/ubuntu2004, generic/centos7, generic/rocky8,
// opensuse/Leap-15.3.x86_64
var nodeOS = flag.String("nodeOS", "generic/ubuntu2004", "VM operating system")
var serverCount = flag.Int("serverCount", 3, "number of server nodes")
var agentCount = flag.Int("agentCount", 2, "number of agent nodes")
var hardened = flag.Bool("hardened", false, "true or false")
var ci = flag.Bool("ci", false, "running on CI")
var local = flag.Bool("local", false, "deploy a locally built K3s binary")
// Environment Variables Info:
// E2E_EXTERNAL_DB: mysql, postgres, etcd (default: etcd)
// E2E_RELEASE_VERSION=v1.23.1+k3s2 (default: latest commit from master)
// E2E_REGISTRY: true/false (default: false)
func Test_E2EClusterValidation(t *testing.T) {
RegisterFailHandler(Fail)
flag.Parse()
suiteConfig, reporterConfig := GinkgoConfiguration()
RunSpecs(t, "Create Cluster Test Suite", suiteConfig, reporterConfig)
}
var (
kubeConfigFile string
serverNodeNames []string
agentNodeNames []string
)
var _ = ReportAfterEach(e2e.GenReport)
var _ = Describe("Verify Create", Ordered, func() {
Context("Cluster Starts up and deploys basic components", func() {
It("Starts up with no issues", func() {
var err error
if *local {
serverNodeNames, agentNodeNames, err = e2e.CreateLocalCluster(*nodeOS, *serverCount, *agentCount)
} else {
serverNodeNames, agentNodeNames, err = e2e.CreateCluster(*nodeOS, *serverCount, *agentCount)
}
Expect(err).NotTo(HaveOccurred(), e2e.GetVagrantLog(err))
fmt.Println("CLUSTER CONFIG")
fmt.Println("OS:", *nodeOS)
fmt.Println("Server Nodes:", serverNodeNames)
fmt.Println("Agent Nodes:", agentNodeNames)
kubeConfigFile, err = e2e.GenKubeConfigFile(serverNodeNames[0])
Expect(err).NotTo(HaveOccurred())
})
It("Checks Node and Pod Status", func() {
fmt.Printf("\nFetching node status\n")
Eventually(func(g Gomega) {
nodes, err := e2e.ParseNodes(kubeConfigFile, false)
g.Expect(err).NotTo(HaveOccurred())
for _, node := range nodes {
g.Expect(node.Status).Should(Equal("Ready"))
}
}, "620s", "5s").Should(Succeed())
_, _ = e2e.ParseNodes(kubeConfigFile, true)
fmt.Printf("\nFetching Pods status\n")
Eventually(func(g Gomega) {
pods, err := e2e.ParsePods(kubeConfigFile, false)
g.Expect(err).NotTo(HaveOccurred())
for _, pod := range pods {
if strings.Contains(pod.Name, "helm-install") {
g.Expect(pod.Status).Should(Equal("Completed"), pod.Name)
} else {
g.Expect(pod.Status).Should(Equal("Running"), pod.Name)
}
}
}, "620s", "5s").Should(Succeed())
_, _ = e2e.ParsePods(kubeConfigFile, true)
})
It("Verifies ClusterIP Service", func() {
res, err := e2e.DeployWorkload("clusterip.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "Cluster IP manifest not deployed: "+res)
Eventually(func(g Gomega) {
cmd := "kubectl get pods -o=name -l k8s-app=nginx-app-clusterip --field-selector=status.phase=Running --kubeconfig=" + kubeConfigFile
res, err := e2e.RunCommand(cmd)
Expect(err).NotTo(HaveOccurred())
g.Expect(res).Should((ContainSubstring("test-clusterip")), "failed cmd: "+cmd+" result: "+res)
}, "240s", "5s").Should(Succeed())
clusterip, _ := e2e.FetchClusterIP(kubeConfigFile, "nginx-clusterip-svc", false)
cmd := "curl -L --insecure http://" + clusterip + "/name.html"
for _, nodeName := range serverNodeNames {
Eventually(func(g Gomega) {
res, err := e2e.RunCmdOnNode(cmd, nodeName)
g.Expect(err).NotTo(HaveOccurred())
Expect(res).Should(ContainSubstring("test-clusterip"))
}, "120s", "10s").Should(Succeed())
}
})
It("Verifies NodePort Service", func() {
_, err := e2e.DeployWorkload("nodeport.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "NodePort manifest not deployed")
for _, nodeName := range serverNodeNames {
nodeExternalIP, _ := e2e.FetchNodeExternalIP(nodeName)
cmd := "kubectl get service nginx-nodeport-svc --kubeconfig=" + kubeConfigFile + " --output jsonpath=\"{.spec.ports[0].nodePort}\""
nodeport, err := e2e.RunCommand(cmd)
Expect(err).NotTo(HaveOccurred())
Eventually(func(g Gomega) {
cmd := "kubectl get pods -o=name -l k8s-app=nginx-app-nodeport --field-selector=status.phase=Running --kubeconfig=" + kubeConfigFile
res, err := e2e.RunCommand(cmd)
Expect(err).NotTo(HaveOccurred())
g.Expect(res).Should(ContainSubstring("test-nodeport"), "nodeport pod was not created")
}, "240s", "5s").Should(Succeed())
cmd = "curl -L --insecure http://" + nodeExternalIP + ":" + nodeport + "/name.html"
Eventually(func(g Gomega) {
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("test-nodeport"))
}, "240s", "5s").Should(Succeed())
}
})
It("Verifies LoadBalancer Service", func() {
_, err := e2e.DeployWorkload("loadbalancer.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "Loadbalancer manifest not deployed")
for _, nodeName := range serverNodeNames {
ip, _ := e2e.FetchNodeExternalIP(nodeName)
cmd := "kubectl get service nginx-loadbalancer-svc --kubeconfig=" + kubeConfigFile + " --output jsonpath=\"{.spec.ports[0].port}\""
port, err := e2e.RunCommand(cmd)
Expect(err).NotTo(HaveOccurred())
Eventually(func(g Gomega) {
cmd := "kubectl get pods -o=name -l k8s-app=nginx-app-loadbalancer --field-selector=status.phase=Running --kubeconfig=" + kubeConfigFile
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("test-loadbalancer"))
}, "240s", "5s").Should(Succeed())
Eventually(func(g Gomega) {
cmd = "curl -L --insecure http://" + ip + ":" + port + "/name.html"
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("test-loadbalancer"))
}, "240s", "5s").Should(Succeed())
}
})
It("Verifies Ingress", func() {
_, err := e2e.DeployWorkload("ingress.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "Ingress manifest not deployed")
for _, nodeName := range serverNodeNames {
ip, _ := e2e.FetchNodeExternalIP(nodeName)
cmd := "curl --header host:foo1.bar.com" + " http://" + ip + "/name.html"
fmt.Println(cmd)
Eventually(func(g Gomega) {
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("test-ingress"))
}, "240s", "5s").Should(Succeed())
}
})
It("Verifies Daemonset", func() {
_, err := e2e.DeployWorkload("daemonset.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "Daemonset manifest not deployed")
nodes, _ := e2e.ParseNodes(kubeConfigFile, false)
Eventually(func(g Gomega) {
pods, _ := e2e.ParsePods(kubeConfigFile, false)
count := e2e.CountOfStringInSlice("test-daemonset", pods)
fmt.Println("POD COUNT")
fmt.Println(count)
fmt.Println("NODE COUNT")
fmt.Println(len(nodes))
g.Expect(len(nodes)).Should((Equal(count)), "Daemonset pod count does not match node count")
}, "420s", "10s").Should(Succeed())
})
It("Verifies dns access", func() {
_, err := e2e.DeployWorkload("dnsutils.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "dnsutils manifest not deployed")
Eventually(func(g Gomega) {
cmd := "kubectl get pods dnsutils --kubeconfig=" + kubeConfigFile
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("dnsutils"))
}, "420s", "2s").Should(Succeed())
Eventually(func(g Gomega) {
cmd := "kubectl --kubeconfig=" + kubeConfigFile + " exec -i -t dnsutils -- nslookup kubernetes.default"
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("kubernetes.default.svc.cluster.local"))
}, "420s", "2s").Should(Succeed())
})
It("Verifies Local Path Provisioner storage ", func() {
res, err := e2e.DeployWorkload("local-path-provisioner.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "local-path-provisioner manifest not deployed: "+res)
Eventually(func(g Gomega) {
cmd := "kubectl get pvc local-path-pvc --kubeconfig=" + kubeConfigFile
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("local-path-pvc"))
g.Expect(res).Should(ContainSubstring("Bound"))
}, "420s", "2s").Should(Succeed())
Eventually(func(g Gomega) {
cmd := "kubectl get pod volume-test --kubeconfig=" + kubeConfigFile
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("volume-test"))
g.Expect(res).Should(ContainSubstring("Running"))
}, "420s", "2s").Should(Succeed())
cmd := "kubectl --kubeconfig=" + kubeConfigFile + " exec volume-test -- sh -c 'echo local-path-test > /data/test'"
_, err = e2e.RunCommand(cmd)
Expect(err).NotTo(HaveOccurred())
cmd = "kubectl delete pod volume-test --kubeconfig=" + kubeConfigFile
res, err = e2e.RunCommand(cmd)
Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
_, err = e2e.DeployWorkload("local-path-provisioner.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "local-path-provisioner manifest not deployed")
Eventually(func(g Gomega) {
cmd := "kubectl get pods -o=name -l app=local-path-provisioner --field-selector=status.phase=Running -n kube-system --kubeconfig=" + kubeConfigFile
res, _ := e2e.RunCommand(cmd)
g.Expect(res).Should(ContainSubstring("local-path-provisioner"))
}, "420s", "2s").Should(Succeed())
Eventually(func(g Gomega) {
cmd := "kubectl get pod volume-test --kubeconfig=" + kubeConfigFile
res, err := e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
g.Expect(res).Should(ContainSubstring("volume-test"))
g.Expect(res).Should(ContainSubstring("Running"))
}, "420s", "2s").Should(Succeed())
Eventually(func(g Gomega) {
cmd := "kubectl exec volume-test --kubeconfig=" + kubeConfigFile + " -- cat /data/test"
res, err = e2e.RunCommand(cmd)
g.Expect(err).NotTo(HaveOccurred(), "failed cmd: "+cmd+" result: "+res)
fmt.Println("Data after re-creation", res)
g.Expect(res).Should(ContainSubstring("local-path-test"))
}, "180s", "2s").Should(Succeed())
})
})
Context("Validate restart", func() {
It("Deletes daemonset", func() {
_, err := e2e.DeployWorkload("daemonset.yaml", kubeConfigFile, *hardened)
Expect(err).NotTo(HaveOccurred(), "Daemonset manifest not deployed")
defer e2e.DeleteWorkload("daemonset.yaml", kubeConfigFile)
nodes, _ := e2e.ParseNodes(kubeConfigFile, false)
Eventually(func(g Gomega) {
pods, _ := e2e.ParsePods(kubeConfigFile, false)
count := e2e.CountOfStringInSlice("test-daemonset", pods)
g.Expect(len(nodes)).Should((Equal(count)), "Daemonset pod count does not match node count")
podsRunning := 0
for _, pod := range pods {
if strings.Contains(pod.Name, "test-daemonset") && pod.Status == "Running" && pod.Ready == "1/1" {
podsRunning++
}
}
g.Expect(len(nodes)).Should((Equal(podsRunning)), "Daemonset running pods count does not match node count")
}, "620s", "5s").Should(Succeed())
})
It("Restarts normally", func() {
errRestart := e2e.RestartCluster(append(serverNodeNames, agentNodeNames...))
Expect(errRestart).NotTo(HaveOccurred(), "Restart Nodes not happened correctly")
Eventually(func(g Gomega) {
nodes, err := e2e.ParseNodes(kubeConfigFile, false)
g.Expect(err).NotTo(HaveOccurred())
for _, node := range nodes {
g.Expect(node.Status).Should(Equal("Ready"))
}
pods, _ := e2e.ParsePods(kubeConfigFile, false)
count := e2e.CountOfStringInSlice("test-daemonset", pods)
g.Expect(len(nodes)).Should((Equal(count)), "Daemonset pod count does not match node count")
podsRunningAr := 0
for _, pod := range pods {
if strings.Contains(pod.Name, "test-daemonset") && pod.Status == "Running" && pod.Ready == "1/1" {
podsRunningAr++
}
}
g.Expect(len(nodes)).Should((Equal(podsRunningAr)), "Daemonset pods are not running after the restart")
}, "620s", "5s").Should(Succeed())
})
})
Context("Valdiate Certificate Rotation", func() {
It("Stops K3s and rotates certificates", func() {
errStop := e2e.StopCluster(serverNodeNames)
Expect(errStop).NotTo(HaveOccurred(), "Cluster could not be stoped successfully")
for _, nodeName := range serverNodeNames {
cmd := "sudo k3s certificate rotate"
if _, err := e2e.RunCmdOnNode(cmd, nodeName); err != nil {
Expect(err).NotTo(HaveOccurred(), "Certificate could not be rotated successfully")
}
}
})
It("Start normally", func() {
// Since we stopped all the server, we have to start 2 at once to get it back up
// If we only start one at a time, the first will hang waiting for the second to be up
_, err := e2e.RunCmdOnNode("sudo systemctl --no-block start k3s", serverNodeNames[0])
Expect(err).NotTo(HaveOccurred())
err = e2e.StartCluster(serverNodeNames[1:])
Expect(err).NotTo(HaveOccurred(), "Cluster could not be started successfully")
Eventually(func(g Gomega) {
nodes, err := e2e.ParseNodes(kubeConfigFile, false)
g.Expect(err).NotTo(HaveOccurred())
for _, node := range nodes {
g.Expect(node.Status).Should(Equal("Ready"))
}
fmt.Println("help")
}, "620s", "5s").Should(Succeed())
Eventually(func(g Gomega) {
pods, err := e2e.ParsePods(kubeConfigFile, false)
g.Expect(err).NotTo(HaveOccurred())
for _, pod := range pods {
if strings.Contains(pod.Name, "helm-install") {
g.Expect(pod.Status).Should(Equal("Completed"), pod.Name)
} else {
g.Expect(pod.Status).Should(Equal("Running"), pod.Name)
}
}
}, "620s", "5s").Should(Succeed())
})
It("Validates certificates", func() {
const grepCert = "sudo ls -lt /var/lib/rancher/k3s/server/ | grep tls"
var expectResult = []string{
"client-ca.crt", "client-ca.key", "client-ca.nochain.crt",
"client-supervisor.crt", "client-supervisor.key",
"dynamic-cert.json", "peer-ca.crt",
"peer-ca.key", "server-ca.crt",
"server-ca.key", "request-header-ca.crt",
"request-header-ca.key", "server-ca.crt",
"server-ca.key", "server-ca.nochain.crt",
"service.current.key", "service.key",
"apiserver-loopback-client__.crt", "apiserver-loopback-client__.key",
"",
}
var finalResult string
var finalErr error
for _, nodeName := range serverNodeNames {
grCert, errGrep := e2e.RunCmdOnNode(grepCert, nodeName)
Expect(errGrep).NotTo(HaveOccurred(), "Certificate could not be created successfully")
re := regexp.MustCompile("tls-[0-9]+")
tls := re.FindAllString(grCert, -1)[0]
final := fmt.Sprintf("sudo diff -sr /var/lib/rancher/k3s/server/tls/ /var/lib/rancher/k3s/server/%s/"+
"| grep -i identical | cut -f4 -d ' ' | xargs basename -a \n", tls)
finalResult, finalErr = e2e.RunCmdOnNode(final, nodeName)
Expect(finalErr).NotTo(HaveOccurred(), "Final Certification does not created successfully")
}
errRestartAgent := e2e.RestartCluster(agentNodeNames)
Expect(errRestartAgent).NotTo(HaveOccurred(), "Agent could not be restart successfully")
finalCert := strings.Replace(finalResult, "\n", ",", -1)
finalCertArray := strings.Split(finalCert, ",")
Expect((finalCertArray)).Should((Equal(expectResult)), "Final certification does not match the expected results")
})
})
})
var failed bool
var _ = AfterEach(func() {
failed = failed || CurrentSpecReport().Failed()
})
var _ = AfterSuite(func() {
if os.Getenv("E2E_GOCOVER") != "" {
Expect(e2e.GetCoverageReport(append(serverNodeNames, agentNodeNames...))).To(Succeed())
}
if failed && !*ci {
fmt.Println("FAILED!")
} else {
Expect(e2e.DestroyCluster()).To(Succeed())
Expect(os.Remove(kubeConfigFile)).To(Succeed())
}
})