add private registry e2e test (k3s-io#7653)

add private registry e2e test

Signed-off-by: Ian Cardoso <osodracnai@gmail.com>
Co-authored-by: Derek Nola <derek.nola@suse.com>

tests/e2e/README.md

@@ -49,6 +49,14 @@ Install the necessary vagrant plugins with the following command:
 ```bash
 vagrant plugin install vagrant-libvirt vagrant-scp vagrant-k3s vagrant-reload
 ```
+### Kubectl
+
+For linux
+```bash
+   curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
+   sudo install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl
+```
+If it does not work, or you are on a different system, check the [official tutorial](https://kubernetes.io/docs/tasks/tools/install-kubectl-linux/)
 
 ## Running
 

tests/e2e/multiclustercidr/multiclustercidr_test.go

@@ -143,7 +143,7 @@ var _ = Describe("Verify MultiClusterCIDR Configuration", Ordered, func() {
 		Expect(err).NotTo(HaveOccurred())
 		for _, pod := range pods {
 			if pod.Node == "agent-0" {
-				Expect(pod.NodeIP).Should(Or(ContainSubstring("10.10.10"), ContainSubstring("10.248.")), pod.Name)
+				Expect(pod.IP).Should(Or(ContainSubstring("10.10.10"), ContainSubstring("10.248.")), pod.Name)
 			}
 		}
 	})
@@ -260,7 +260,7 @@ var _ = Describe("Verify MultiClusterCIDR Configuration", Ordered, func() {
 		Expect(err).NotTo(HaveOccurred())
 		for _, pod := range pods {
 			if pod.Node == "agent-0" {
-				Expect(pod.NodeIP).Should(Or(ContainSubstring("fd11:decf:c0ff"), ContainSubstring("2001:cafe:248")), pod.Name)
+				Expect(pod.IP).Should(Or(ContainSubstring("fd11:decf:c0ff"), ContainSubstring("2001:cafe:248")), pod.Name)
 			}
 		}
 	})

tests/e2e/privateregistry/Vagrantfile

@@ -0,0 +1,131 @@
+ENV['VAGRANT_NO_PARALLEL'] = 'no'
+NODE_ROLES = (ENV['E2E_NODE_ROLES'] ||
+  ["server-0", "server-1", "server-2", "agent-0", "agent-1"])
+NODE_BOXES = (ENV['E2E_NODE_BOXES'] ||
+  ['generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004', 'generic/ubuntu2004'])
+GITHUB_BRANCH = (ENV['E2E_GITHUB_BRANCH'] || "master")
+RELEASE_VERSION = (ENV['E2E_RELEASE_VERSION'] || "")
+EXTERNAL_DB = (ENV['E2E_EXTERNAL_DB'] || "etcd")
+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
+  node_ip = "#{NETWORK_PREFIX}.#{100+node_num}"
+  vm.network "private_network", ip: node_ip, netmask: "255.255.255.0"
+
+  scripts_location = Dir.exists?("./scripts") ? "./scripts" : "../scripts"
+  vagrant_defaults = File.exists?("./vagrantdefaults.rb") ? "./vagrantdefaults.rb" : "../vagrantdefaults.rb"
+  load vagrant_defaults
+
+  defaultOSConfigure(vm)
+  install_type = getInstallType(vm, RELEASE_VERSION, GITHUB_BRANCH)
+
+  vm.provision "shell", inline: "ping -c 2 k3s.io"
+
+  # The formatting on this is a little weird, but it allows inserting variables
+  # and still using the heredoc formatting with escapped quotes
+  writePrivateRegistry = <<~'SCRIPT'.chomp % {net: NETWORK_PREFIX}
+  mkdir -p /etc/rancher/k3s/
+  echo "mirrors:
+    my-registry.local:
+      endpoint:
+        - \"http://%{net}.100:5000\"" > /etc/rancher/k3s/registries.yaml
+  SCRIPT
+
+  setInsecureRegistryPolicy = <<~'SCRIPT'.chomp % {net: NETWORK_PREFIX}
+  mkdir -p /etc/docker/
+  echo "{ \"insecure-registries\" : [\"%{net}.100:5000\"] }" > /etc/docker/daemon.json
+  SCRIPT
+
+  if role.include?("server") && role_num == 0
+    vm.provision "insecure-registry", type: "shell", inline: setInsecureRegistryPolicy
+    vm.provision "private-registry", type: "shell", inline: writePrivateRegistry
+    dockerInstall(vm)
+
+    vm.provision 'k3s-primary-server', type: 'k3s', run: 'once' do |k3s|
+      k3s.args = "server "
+      k3s.config = <<~YAML
+        token: vagrant
+        node-external-ip: #{NETWORK_PREFIX}.100
+        flannel-iface: eth1
+        cluster-init: true
+      YAML
+      k3s.env = %W[K3S_KUBECONFIG_MODE=0644 #{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 "shell", inline: writePrivateRegistry
+
+    vm.provision 'k3s-secondary-server', type: 'k3s', run: 'once' do |k3s|
+      k3s.args = "server"
+      k3s.config = <<~YAML
+        server: "https://#{NETWORK_PREFIX}.100:6443"
+        token: vagrant
+        node-external-ip: #{node_ip}
+        flannel-iface: eth1
+      YAML
+      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 role.include?("agent")
+    vm.provision "shell", inline: writePrivateRegistry
+
+    vm.provision 'k3s-agent', type: 'k3s', run: 'once' do |k3s|
+      k3s.args = "agent"
+      k3s.config = <<~YAML
+        server: "https://#{NETWORK_PREFIX}.100:6443"
+        token: vagrant
+        node-external-ip: #{node_ip}
+        flannel-iface: eth1
+      YAML
+      k3s.env = %W[K3S_KUBECONFIG_MODE=0644 #{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'
+    if !EXTERNAL_DB.empty?
+      vm.provision "shell", inline: "docker start #{EXTERNAL_DB}"
+    end
+  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/privateregistry/privateregistry_test.go

@@ -0,0 +1,162 @@
+package validatecluster
+
+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, 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", 1, "number of server nodes")
+var agentCount = flag.Int("agentCount", 1, "number of agent nodes")
+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_E2EPrivateRegistry(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 :", 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("Create new private registry", func() {
+			registry, err := e2e.RunCmdOnNode("sudo docker run -d -p 5000:5000 --restart=always --name registry registry:2 ", serverNodeNames[0])
+			fmt.Println(registry)
+			Expect(err).NotTo(HaveOccurred())
+
+		})
+		It("ensures registry is working", func() {
+			a, err := e2e.RunCmdOnNode("sudo docker ps -a | grep registry\n", serverNodeNames[0])
+			fmt.Println(a)
+			Expect(err).NotTo(HaveOccurred())
+
+		})
+		It("Should pull and image from dockerhub and send it to private registry", func() {
+			cmd := "sudo docker pull nginx"
+			_, err := e2e.RunCmdOnNode(cmd, serverNodeNames[0])
+			Expect(err).NotTo(HaveOccurred(), "failed: "+cmd)
+
+			nodeIP, err := e2e.FetchNodeExternalIP(serverNodeNames[0])
+			Expect(err).NotTo(HaveOccurred())
+
+			cmd = "sudo docker tag nginx " + nodeIP + ":5000/my-webpage"
+			_, err = e2e.RunCmdOnNode(cmd, serverNodeNames[0])
+			Expect(err).NotTo(HaveOccurred(), "failed: "+cmd)
+
+			cmd = "sudo docker push " + nodeIP + ":5000/my-webpage"
+			_, err = e2e.RunCmdOnNode(cmd, serverNodeNames[0])
+			Expect(err).NotTo(HaveOccurred(), "failed: "+cmd)
+
+			cmd = "sudo docker image remove nginx " + nodeIP + ":5000/my-webpage"
+			_, err = e2e.RunCmdOnNode(cmd, serverNodeNames[0])
+			Expect(err).NotTo(HaveOccurred(), "failed: "+cmd)
+		})
+		It("Should create and validate deployment with private registry on", func() {
+			res, err := e2e.RunCmdOnNode("sudo kubectl create deployment my-webpage --image=my-registry.local/my-webpage", serverNodeNames[0])
+			fmt.Println(res)
+			Expect(err).NotTo(HaveOccurred())
+
+			var pod e2e.Pod
+			Eventually(func(g Gomega) {
+				pods, err := e2e.ParsePods(kubeConfigFile, false)
+				for _, p := range pods {
+					if strings.Contains(p.Name, "my-webpage") {
+						pod = p
+					}
+				}
+				g.Expect(err).NotTo(HaveOccurred())
+				g.Expect(pod.Status).Should(Equal("Running"))
+				g.Expect(pod.Node).Should(Equal(agentNodeNames[0]))
+			}, "60s", "5s").Should(Succeed())
+
+			cmd := "curl " + pod.IP
+			Expect(e2e.RunCmdOnNode(cmd, serverNodeNames[0])).To(ContainSubstring("Welcome to nginx!"))
+		})
+
+	})
+})
+
+var failed bool
+var _ = AfterEach(func() {
+	failed = failed || CurrentSpecReport().Failed()
+})
+
+var _ = AfterSuite(func() {
+
+	if failed && !*ci {
+		fmt.Println("FAILED!")
+	} else {
+		r1, err := e2e.RunCmdOnNode("sudo docker rm -f registry", serverNodeNames[0])
+		Expect(err).NotTo(HaveOccurred(), r1)
+		r2, err := e2e.RunCmdOnNode("sudo kubectl delete deployment my-webpage", serverNodeNames[0])
+		Expect(err).NotTo(HaveOccurred(), r2)
+		Expect(err).NotTo(HaveOccurred())
+		Expect(e2e.DestroyCluster()).To(Succeed())
+		Expect(os.Remove(kubeConfigFile)).To(Succeed())
+	}
+})

tests/e2e/testutils.go

@@ -35,7 +35,7 @@ type Pod struct {
 	Ready     string
 	Status    string
 	Restarts  string
-	NodeIP    string
+	IP        string
 	Node      string
 }
 
@@ -381,16 +381,10 @@ func ParseNodes(kubeConfig string, print bool) ([]Node, error) {
 	return nodes, nil
 }
 
-func ParsePods(kubeConfig string, print bool) ([]Pod, error) {
+func formatPods(input string) ([]Pod, error) {
 	pods := make([]Pod, 0, 10)
-	podList := ""
-
-	cmd := "kubectl get pods -o wide --no-headers -A --kubeconfig=" + kubeConfig
-	res, _ := RunCommand(cmd)
-	res = strings.TrimSpace(res)
-	podList = res
-
-	split := strings.Split(res, "\n")
+	input = strings.TrimSpace(input)
+	split := strings.Split(input, "\n")
 	for _, rec := range split {
 		fields := strings.Fields(string(rec))
 		if len(fields) < 8 {
@@ -402,11 +396,25 @@ func ParsePods(kubeConfig string, print bool) ([]Pod, error) {
 			Ready:     fields[2],
 			Status:    fields[3],
 			Restarts:  fields[4],
-			NodeIP:    fields[6],
+			IP:        fields[6],
 			Node:      fields[7],
 		}
 		pods = append(pods, pod)
 	}
+	return pods, nil
+}
+
+func ParsePods(kubeConfig string, print bool) ([]Pod, error) {
+	podList := ""
+
+	cmd := "kubectl get pods -o wide --no-headers -A"
+	res, _ := RunCommand(cmd)
+	podList = strings.TrimSpace(res)
+
+	pods, err := formatPods(res)
+	if err != nil {
+		return nil, err
+	}
 	if print {
 		fmt.Println(podList)
 	}