Add e2e tests for CA cert rotation

tests/e2e/rotateca/Vagrantfile

+ENV['VAGRANT_NO_PARALLEL'] = 'no'
+NODE_ROLES = (ENV['E2E_NODE_ROLES'] ||
+  ["server-0", "server-1", "server-2", "agent-1"])
+NODE_BOXES = (ENV['E2E_NODE_BOXES'] ||
+  ['generic/ubuntu2204', 'generic/ubuntu2204', 'generic/ubuntu2204', 'generic/ubuntu2204'])
+GITHUB_BRANCH = (ENV['E2E_GITHUB_BRANCH'] || "master")
+RELEASE_VERSION = (ENV['E2E_RELEASE_VERSION'] || "")
+NODE_CPUS = (ENV['E2E_NODE_CPUS'] || 2).to_i
+NODE_MEMORY = (ENV['E2E_NODE_MEMORY'] || 2048).to_i
+# Virtualbox >= 6.1.28 require `/etc/vbox/network.conf` for expanded private networks 
+NETWORK_PREFIX = "10.10.10"
+install_type = ""
+
+def provision(vm, role, role_num, node_num)
+  vm.box = NODE_BOXES[node_num]
+  vm.hostname = role
+  # An expanded netmask is required to allow VM<-->VM communication, virtualbox defaults to /32
+  vm.network "private_network", ip: "#{NETWORK_PREFIX}.#{100+node_num}", netmask: "255.255.255.0"
+
+  vagrant_defaults = '../vagrantdefaults.rb'
+  load vagrant_defaults if File.exists?(vagrant_defaults)
+  
+  defaultOSConfigure(vm)
+  install_type = getInstallType(vm, RELEASE_VERSION, GITHUB_BRANCH)
+  
+  vm.provision "shell", inline: "ping -c 2 k3s.io"
+  
+  if role.include?("server") && role_num == 0
+    vm.provision 'custom-ca', type: 'shell', run: 'once' do |script|
+      script.path = '../../../contrib/util/certs.sh'
+      script.env = {'PRODUCT' => 'vagrant-e2e-test', 'DATA_DIR' => '/var/lib/rancher/k3s'}
+    end
+    vm.provision 'k3s-install', type: 'k3s', run: 'once' do |k3s|
+      k3s.args = %W[server --cluster-init --node-external-ip=#{NETWORK_PREFIX}.100 --flannel-iface=eth1]
+      k3s.env = %W[K3S_KUBECONFIG_MODE=0644 K3S_TOKEN=vagrant #{install_type}]
+      k3s.config_mode = '0644' # side-step https://github.com/k3s-io/k3s/issues/4321
+    end
+  elsif role.include?("server") && role_num != 0
+    vm.provision 'k3s-install', type: 'k3s', run: 'once' do |k3s|
+      k3s.args = %W[server --server https://#{NETWORK_PREFIX}.100:6443 --flannel-iface=eth1]
+      k3s.env = %W[K3S_KUBECONFIG_MODE=0644 K3S_TOKEN=vagrant #{install_type}]
+      k3s.config_mode = '0644' # side-step https://github.com/k3s-io/k3s/issues/4321
+    end
+  elsif role.include?("agent")
+    vm.provision 'k3s-install', type: 'k3s', run: 'once' do |k3s|
+      k3s.args = %W[agent --server https://#{NETWORK_PREFIX}.100:6443 --flannel-iface=eth1]
+      k3s.env = %W[K3S_KUBECONFIG_MODE=0644 K3S_TOKEN=vagrant #{install_type}]
+      k3s.config_mode = '0644' # side-step https://github.com/k3s-io/k3s/issues/4321
+    end
+  end
+  if vm.box.to_s.include?("microos")
+    vm.provision 'k3s-reload', type: 'reload', run: 'once'
+  end
+end
+
+Vagrant.configure("2") do |config|
+  config.vagrant.plugins = ["vagrant-k3s", "vagrant-reload"]
+  # Default provider is libvirt, virtualbox is only provided as a backup
+  config.vm.provider "libvirt" do |v|
+    v.cpus = NODE_CPUS
+    v.memory = NODE_MEMORY
+  end
+  config.vm.provider "virtualbox" do |v|
+    v.cpus = NODE_CPUS
+    v.memory = NODE_MEMORY
+  end
+  
+  if NODE_ROLES.kind_of?(String)
+    NODE_ROLES = NODE_ROLES.split(" ", -1)
+  end
+  if NODE_BOXES.kind_of?(String)
+    NODE_BOXES = NODE_BOXES.split(" ", -1)
+  end
+
+  # Must iterate on the index, vagrant does not understand iterating 
+  # over the node roles themselves
+  NODE_ROLES.length.times do |i|
+    name = NODE_ROLES[i]
+    role_num = name.split("-", -1).pop.to_i
+    config.vm.define name do |node|
+      provision(node.vm, name, role_num, i)
+    end
+  end
+end

tests/e2e/rotateca/rotateca_test.go

+package secretsencryption
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/k3s-io/k3s/tests/e2e"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+// Valid nodeOS: generic/ubuntu2004, opensuse/Leap-15.3.x86_64
+var nodeOS = flag.String("nodeOS", "generic/ubuntu2204", "VM operating system")
+var serverCount = flag.Int("serverCount", 3, "number of server nodes")
+var agentCount = flag.Int("agentCount", 1, "number of agent nodes")
+var ci = flag.Bool("ci", false, "running on CI")
+
+// Environment Variables Info:
+// E2E_RELEASE_VERSION=v1.23.1+k3s2 or nil for latest commit from master
+
+func Test_E2ECustomCARotation(t *testing.T) {
+	RegisterFailHandler(Fail)
+	flag.Parse()
+	suiteConfig, reporterConfig := GinkgoConfiguration()
+	RunSpecs(t, "Secrets Encryption Test Suite", suiteConfig, reporterConfig)
+}
+
+var (
+	kubeConfigFile  string
+	agentNodeNames  []string
+	serverNodeNames []string
+)
+
+var _ = ReportAfterEach(e2e.GenReport)
+
+var _ = Describe("Verify Custom CA Rotation", Ordered, func() {
+	Context("Custom CA is rotated:", func() {
+		It("Starts up with no issues", func() {
+			var err error
+			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("Generates New CA Certificates", func() {
+			cmds := []string{
+				"sudo mkdir -p /opt/rancher/k3s/server",
+				"sudo cp -r /var/lib/rancher/k3s/server/tls /opt/rancher/k3s/server",
+				"curl -ksL https://raw.githubusercontent.com/brandond/k3s/custom-cert-gen/contrib/util/certs.sh | sudo DATA_DIR=/opt/rancher/k3s bash -s -",
+			}
+			for _, cmd := range cmds {
+				_, err := e2e.RunCmdOnNode(cmd, serverNodeNames[0])
+				Expect(err).NotTo(HaveOccurred())
+			}
+		})
+
+		It("Rotates CA Certificates", func() {
+			cmd := "sudo k3s certificate rotate-ca --path=/opt/rancher/k3s"
+			_, err := e2e.RunCmdOnNode(cmd, serverNodeNames[0])
+			Expect(err).NotTo(HaveOccurred())
+		})
+
+		It("Restarts K3s servers", func() {
+			Expect(e2e.RestartCluster(serverNodeNames)).To(Succeed())
+		})
+
+		It("Restarts K3s agents", func() {
+			Expect(e2e.RestartCluster(agentNodeNames)).To(Succeed())
+		})
+
+		It("Checks node and pod status", func() {
+			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"))
+				}
+			}, "420s", "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)
+					}
+				}
+			}, "420s", "5s").Should(Succeed())
+			_, _ = e2e.ParseNodes(kubeConfigFile, true)
+		})
+	})
+})
+
+var failed bool
+var _ = AfterEach(func() {
+	failed = failed || CurrentSpecReport().Failed()
+})
+
+var _ = AfterSuite(func() {
+	if failed && !*ci {
+		fmt.Println("FAILED!")
+	} else {
+		Expect(e2e.DestroyCluster()).To(Succeed())
+		Expect(os.Remove(kubeConfigFile)).To(Succeed())
+	}
+})

tests/e2e/secretsencryption/secretsencryption_test.go

@@ -40,7 +40,7 @@ var _ = Describe("Verify Secrets Encryption Rotation", Ordered, func() {
 		It("Starts up with no issues", func() {
 			var err error
 			serverNodeNames, _, err = e2e.CreateCluster(*nodeOS, *serverCount, 0)
-			Expect(err).NotTo(HaveOccurred(), e2e.GetVagrantLog)
+			Expect(err).NotTo(HaveOccurred(), e2e.GetVagrantLog(err))
 			fmt.Println("CLUSTER CONFIG")
 			fmt.Println("OS:", *nodeOS)
 			fmt.Println("Server Nodes:", serverNodeNames)