Add docker e2e test

tests/e2e/docker/Vagrantfile

+ENV['VAGRANT_NO_PARALLEL'] = 'no'
+NODE_ROLES = (ENV['NODE_ROLES'] ||
+  ["server-0", "agent-0"])
+NODE_BOXES = (ENV['NODE_BOXES'] ||
+  ['generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004'])
+GITHUB_BRANCH = (ENV['GITHUB_BRANCH'] || "master")
+RELEASE_VERSION = (ENV['RELEASE_VERSION'] || "")
+NODE_CPUS = (ENV['NODE_CPUS'] || 2).to_i
+NODE_MEMORY = (ENV['NODE_MEMORY'] || 1024).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)
+  dockerInstall(vm)
+  install_type = getInstallType(vm, RELEASE_VERSION, GITHUB_BRANCH)
+  
+  vm.provision "shell", inline: "ping -c 2 k3s.io"
+  
+  if role.include?("server")
+    vm.provision 'k3s-install', type: 'k3s', run: 'once' do |k3s|
+      k3s.args = %W[server --node-external-ip=#{NETWORK_PREFIX}.100 --flannel-iface=eth1 --docker]
+      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 --docker]
+      k3s.env = %W[K3S_KUBECONFIG_MODE=0644 K3S_TOKEN=vagrant #{install_type}]
+    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/docker/docker_test.go

+package docker
+
+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, dweomer/microos.amd64
+var nodeOS = flag.String("nodeOS", "generic/ubuntu2004", "VM operating system")
+var serverCount = flag.Int("serverCount", 1, "number of server nodes")
+var agentCount = flag.Int("agentCount", 1, "number of agent nodes")
+
+// Environment Variables Info:
+// E2E_RELEASE_VERSION=v1.23.1+k3s2 or nil for latest commit from master
+
+func Test_E2EClusterValidation(t *testing.T) {
+	RegisterFailHandler(Fail)
+	flag.Parse()
+	RunSpecs(t, "Create Cluster Test Suite")
+}
+
+var (
+	kubeConfigFile  string
+	serverNodeNames []string
+	agentNodeNames  []string
+)
+
+var _ = Describe("Verify CRI-Dockerd", func() {
+	Context("Cluster :", 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())
+			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"))
+				}
+			}, "420s", "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)
+					}
+				}
+			}, "420s", "5s").Should(Succeed())
+			_, _ = e2e.ParsePods(kubeConfigFile, true)
+		})
+	})
+})
+
+var failed = false
+var _ = AfterEach(func() {
+	failed = failed || CurrentSpecReport().Failed()
+})
+
+var _ = AfterSuite(func() {
+	if failed {
+		fmt.Println("FAILED!")
+	} else {
+		Expect(e2e.DestroyCluster()).To(Succeed())
+		Expect(os.Remove(kubeConfigFile)).To(Succeed())
+	}
+})

tests/e2e/vagrantdefaults.rb

@@ -25,4 +25,24 @@ def getInstallType(vm, release_version, branch)
     vm.provision "Get latest commit", type: "shell", path: scripts_location +"/latest_commit.sh", args: [branch, "/tmp/k3s_commits"]
     return "INSTALL_K3S_COMMIT=$(head\ -n\ 1\ /tmp/k3s_commits)"
   end
-end
+end
\ No newline at end of file
+
+def dockerInstall(vm)
+  vm.provider "libvirt" do |v|
+    v.memory = NODE_MEMORY + 1024
+  end
+  vm.provider "virtualbox" do |v|
+    v.memory = NODE_MEMORY + 1024
+  end
+  if vm.box.to_s.include?("ubuntu")
+    vm.provision "shell", inline: "apt install -y docker.io"
+  end
+  if vm.box.to_s.include?("Leap")
+    vm.provision "shell", inline: "zypper install -y docker apparmor-parser"
+  end
+  if vm.box.to_s.include?("microos")
+    vm.provision "shell", inline: "transactional-update pkg install -y docker apparmor-parser"
+    vm.provision 'docker-reload', type: 'reload', run: 'once'
+    vm.provision "shell", inline: "systemctl enable --now docker"
+  end
+end

tests/e2e/validatecluster/Vagrantfile

@@ -131,27 +131,6 @@ def getDBType(role, role_num, vm)
   return ""
 end
 
-def dockerInstall(vm)
-  vm.provider "libvirt" do |v|
-    v.memory = NODE_MEMORY + 1024
-  end
-  vm.provider "virtualbox" do |v|
-    v.memory = NODE_MEMORY + 1024
-  end
-  if vm.box.to_s.include?("ubuntu")
-    vm.provision "shell", inline: "apt install -y docker.io"
-  end
-  if vm.box.to_s.include?("Leap")
-    vm.provision "shell", inline: "zypper install -y docker apparmor-parser"
-  end
-  if vm.box.to_s.include?("microos")
-    vm.provision "shell", inline: "transactional-update pkg install -y docker apparmor-parser"
-    vm.provision 'docker-reload', type: 'reload', run: 'once'
-    vm.provision "shell", inline: "systemctl enable --now docker"
-  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