Add an e2e test for flannel-backend=none

Signed-off-by: Manuel Buil <[email protected]>

tests/e2e/flannelbackendnone/Vagrantfile

@@ -0,0 +1,69 @@
+ENV['VAGRANT_NO_PARALLEL'] = 'no'
+NODE_ROLES = (ENV['E2E_NODE_ROLES'] ||
+  ["server-0"])
+NODE_BOXES = (ENV['E2E_NODE_BOXES'] ||
+  ['generic/ubuntu2004'])
+GITHUB_BRANCH = (ENV['E2E_GITHUB_BRANCH'] || "master")
+RELEASE_VERSION = (ENV['E2E_RELEASE_VERSION'] || "")
+GOCOVER = (ENV['E2E_GOCOVER'] || "")
+NODE_CPUS = (ENV['E2E_NODE_CPUS'] || 2).to_i
+NODE_MEMORY = (ENV['E2E_NODE_MEMORY'] || 2048).to_i
+NETWORK4_PREFIX = "10.10.10"
+PUBLIC_NETWORK4_PREFIX = "10.100.100"
+install_type = ""
+
+def provision(vm, role, role_num, node_num)
+  vm.box = NODE_BOXES[node_num]
+  vm.hostname = role
+  node_ip4 = "#{NETWORK4_PREFIX}.#{100+node_num}"
+  node_ip4_public = "#{PUBLIC_NETWORK4_PREFIX}.#{100+node_num}"
+  vm.network "private_network", :ip => node_ip4, :netmask => "255.255.255.0"
+  vm.network "private_network", :ip => node_ip4_public, :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)
+  addCoverageDir(vm, role, GOCOVER)
+  install_type = getInstallType(vm, RELEASE_VERSION, GITHUB_BRANCH)
+
+  if role.include?("server") && role_num == 0
+    vm.provision :k3s, run: 'once' do |k3s|
+      k3s.config_mode = '0644' # side-step https://github.com/k3s-io/k3s/issues/4321
+      k3s.args = "server "
+      k3s.config = <<~YAML
+        node-external-ip: #{node_ip4_public}
+        node-ip: #{node_ip4}
+        token: vagrant
+        flannel-backend: none
+      YAML
+      k3s.env = ["K3S_KUBECONFIG_MODE=0644", install_type]
+    end
+  end
+end
+
+Vagrant.configure("2") do |config|
+  config.vagrant.plugins = ["vagrant-k3s", "vagrant-reload", "vagrant-libvirt"]
+  config.vm.provider "libvirt" 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/flannelbackendnone/flannelbackendnone_test.go

@@ -0,0 +1,97 @@
+// This test verifies that server reaches the phase where it waits for a CNI plugin
+// when flannel-backend=none
+
+package flannelbackendnone
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"testing"
+
+	"github.com/k3s-io/k3s/tests/e2e"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	"github.com/sirupsen/logrus"
+)
+
+// Valid nodeOS: generic/ubuntu2004, 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", 0, "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")
+
+func Test_E2EFlannelBackendNone(t *testing.T) {
+	flag.Parse()
+	RegisterFailHandler(Fail)
+	suiteConfig, reporterConfig := GinkgoConfiguration()
+	RunSpecs(t, "Flannel backend none config Suite", suiteConfig, reporterConfig)
+
+}
+
+var (
+	kubeConfigFile  string
+	serverNodeNames []string
+	agentNodeNames  []string
+)
+
+var _ = ReportAfterEach(e2e.GenReport)
+
+var _ = Describe("Verify Flannel Backend None config", Ordered, 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 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("NotReady"))
+			}
+		}, "60s", "5s").Should(Succeed())
+		_, err := e2e.ParseNodes(kubeConfigFile, true)
+		Expect(err).NotTo(HaveOccurred())
+	})
+
+	It("Checks Pod Status", func() {
+		Eventually(func(g Gomega) {
+			pods, err := e2e.ParsePods(kubeConfigFile, false)
+			g.Expect(err).NotTo(HaveOccurred())
+			for _, pod := range pods {
+				g.Expect(pod.Status).Should(Equal("Pending"), pod.Name)
+				}
+		}, "60s", "5s").Should(Succeed())
+		_, err := e2e.ParsePods(kubeConfigFile, true)
+		Expect(err).NotTo(HaveOccurred())
+	})
+})
+
+var failed bool
+var _ = AfterEach(func() {
+	failed = failed || CurrentSpecReport().Failed()
+})
+
+var _ = AfterSuite(func() {
+	if failed && !*ci {
+		fmt.Println("FAILED!")
+	} else {
+		Expect(e2e.GetCoverageReport(append(serverNodeNames, agentNodeNames...))).To(Succeed())
+		Expect(e2e.DestroyCluster()).To(Succeed())
+		Expect(os.Remove(kubeConfigFile)).To(Succeed())
+	}
+})