//go:build !windows // +build !windows /* Copyright 2017 The Kubernetes Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ package etcd import ( "fmt" "os" "path" "path/filepath" "reflect" "sort" "testing" "github.com/google/go-cmp/cmp" "github.com/lithammer/dedent" v1 "k8s.io/api/core/v1" kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm" kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants" etcdutil "k8s.io/kubernetes/cmd/kubeadm/app/util/etcd" staticpodutil "k8s.io/kubernetes/cmd/kubeadm/app/util/staticpod" testutil "k8s.io/kubernetes/cmd/kubeadm/test" ) func TestGetEtcdPodSpec(t *testing.T) { // Creates a ClusterConfiguration cfg := &kubeadmapi.ClusterConfiguration{ KubernetesVersion: "v1.7.0", Etcd: kubeadmapi.Etcd{ Local: &kubeadmapi.LocalEtcd{ DataDir: "/var/lib/etcd", ExtraEnvs: []kubeadmapi.EnvVar{ { EnvVar: v1.EnvVar{Name: "Foo", Value: "Bar"}, }, }, }, }, } endpoint := &kubeadmapi.APIEndpoint{} // Executes GetEtcdPodSpec spec := GetEtcdPodSpec(cfg, endpoint, "", []etcdutil.Member{}) // Assert each specs refers to the right pod if spec.Spec.Containers[0].Name != kubeadmconstants.Etcd { t.Errorf("getKubeConfigSpecs spec for etcd contains pod %s, expects %s", spec.Spec.Containers[0].Name, kubeadmconstants.Etcd) } env := []v1.EnvVar{{Name: "Foo", Value: "Bar"}} if !reflect.DeepEqual(spec.Spec.Containers[0].Env, env) { t.Errorf("expected env: %v, got: %v", env, spec.Spec.Containers[0].Env) } } func TestCreateLocalEtcdStaticPodManifestFile(t *testing.T) { // Create temp folder for the test case tmpdir := testutil.SetupTempDir(t) defer os.RemoveAll(tmpdir) var tests = []struct { cfg *kubeadmapi.ClusterConfiguration expectedError bool expectedManifest string }{ { cfg: &kubeadmapi.ClusterConfiguration{ KubernetesVersion: "v1.7.0", Etcd: kubeadmapi.Etcd{ Local: &kubeadmapi.LocalEtcd{ DataDir: tmpdir + "/etcd", }, }, }, expectedError: false, expectedManifest: fmt.Sprintf(`apiVersion: v1 kind: Pod metadata: annotations: kubeadm.kubernetes.io/etcd.advertise-client-urls: https://:2379 creationTimestamp: null labels: component: etcd tier: control-plane name: etcd namespace: kube-system spec: containers: - command: - etcd - --advertise-client-urls=https://:2379 - --cert-file=etcd/server.crt - --client-cert-auth=true - --data-dir=%s/etcd - --experimental-initial-corrupt-check=true - --experimental-watch-progress-notify-interval=5s - --initial-advertise-peer-urls=https://:2380 - --initial-cluster==https://:2380 - --key-file=etcd/server.key - --listen-client-urls=https://127.0.0.1:2379,https://:2379 - --listen-metrics-urls=http://127.0.0.1:2381 - --listen-peer-urls=https://:2380 - --name= - --peer-cert-file=etcd/peer.crt - --peer-client-cert-auth=true - --peer-key-file=etcd/peer.key - --peer-trusted-ca-file=etcd/ca.crt - --snapshot-count=10000 - --trusted-ca-file=etcd/ca.crt image: /etcd:%s imagePullPolicy: IfNotPresent livenessProbe: failureThreshold: 8 httpGet: host: 127.0.0.1 path: /health?exclude=NOSPACE&serializable=true port: 2381 scheme: HTTP initialDelaySeconds: 10 periodSeconds: 10 timeoutSeconds: 15 name: etcd resources: requests: cpu: 100m memory: 100Mi startupProbe: failureThreshold: 24 httpGet: host: 127.0.0.1 path: /health?serializable=false port: 2381 scheme: HTTP initialDelaySeconds: 10 periodSeconds: 10 timeoutSeconds: 15 volumeMounts: - mountPath: %s/etcd name: etcd-data - mountPath: /etcd name: etcd-certs hostNetwork: true priority: 2000001000 priorityClassName: system-node-critical securityContext: seccompProfile: type: RuntimeDefault volumes: - hostPath: path: /etcd type: DirectoryOrCreate name: etcd-certs - hostPath: path: %s/etcd type: DirectoryOrCreate name: etcd-data status: {} `, tmpdir, kubeadmconstants.DefaultEtcdVersion, tmpdir, tmpdir), }, { cfg: &kubeadmapi.ClusterConfiguration{ KubernetesVersion: "v1.7.0", Etcd: kubeadmapi.Etcd{ External: &kubeadmapi.ExternalEtcd{ Endpoints: []string{ "https://etcd-instance:2379", }, CAFile: "/etc/kubernetes/pki/etcd/ca.crt", CertFile: "/etc/kubernetes/pki/etcd/apiserver-etcd-client.crt", KeyFile: "/etc/kubernetes/pki/etcd/apiserver-etcd-client.key", }, }, }, expectedError: true, }, } for _, test := range tests { // Execute createStaticPodFunction manifestPath := filepath.Join(tmpdir, kubeadmconstants.ManifestsSubDirName) err := CreateLocalEtcdStaticPodManifestFile(manifestPath, "", "", test.cfg, &kubeadmapi.APIEndpoint{}, false /* IsDryRun */) if !test.expectedError { if err != nil { t.Errorf("CreateLocalEtcdStaticPodManifestFile failed when not expected: %v", err) } // Assert expected files are there testutil.AssertFilesCount(t, manifestPath, 1) testutil.AssertFileExists(t, manifestPath, kubeadmconstants.Etcd+".yaml") manifestBytes, err := os.ReadFile(path.Join(manifestPath, kubeadmconstants.Etcd+".yaml")) if err != nil { t.Errorf("failed to load generated manifest file: %v", err) } if test.expectedManifest != string(manifestBytes) { t.Errorf( "File created by CreateLocalEtcdStaticPodManifestFile is not as expected. Diff: \n%s", cmp.Diff(string(manifestBytes), test.expectedManifest), ) } } else { testutil.AssertError(t, err, "etcd static pod manifest cannot be generated for cluster using external etcd") } } } func TestCreateLocalEtcdStaticPodManifestFileWithPatches(t *testing.T) { // Create temp folder for the test case tmpdir := testutil.SetupTempDir(t) defer os.RemoveAll(tmpdir) // Creates a Cluster Configuration cfg := &kubeadmapi.ClusterConfiguration{ KubernetesVersion: "v1.7.0", Etcd: kubeadmapi.Etcd{ Local: &kubeadmapi.LocalEtcd{ DataDir: tmpdir + "/etcd", }, }, } patchesPath := filepath.Join(tmpdir, "patch-files") err := os.MkdirAll(patchesPath, 0777) if err != nil { t.Fatalf("Couldn't create %s", patchesPath) } patchString := dedent.Dedent(` metadata: annotations: patched: "true" `) err = os.WriteFile(filepath.Join(patchesPath, kubeadmconstants.Etcd+".yaml"), []byte(patchString), 0644) if err != nil { t.Fatalf("WriteFile returned unexpected error: %v", err) } manifestPath := filepath.Join(tmpdir, kubeadmconstants.ManifestsSubDirName) err = CreateLocalEtcdStaticPodManifestFile(manifestPath, patchesPath, "", cfg, &kubeadmapi.APIEndpoint{}, false /* IsDryRun */) if err != nil { t.Errorf("Error executing createStaticPodFunction: %v", err) return } pod, err := staticpodutil.ReadStaticPodFromDisk(filepath.Join(manifestPath, kubeadmconstants.Etcd+".yaml")) if err != nil { t.Errorf("Error executing ReadStaticPodFromDisk: %v", err) return } if pod.Spec.DNSPolicy != "" { t.Errorf("DNSPolicy should be empty but: %v", pod.Spec.DNSPolicy) } if _, ok := pod.ObjectMeta.Annotations["patched"]; !ok { t.Errorf("Patches were not applied to %s", kubeadmconstants.Etcd) } } func TestGetEtcdCommand(t *testing.T) { var tests = []struct { name string advertiseAddress string nodeName string extraArgs []kubeadmapi.Arg initialCluster []etcdutil.Member expected []string }{ { name: "Default args - with empty etcd initial cluster", advertiseAddress: "1.2.3.4", nodeName: "foo", expected: []string{ "etcd", "--name=foo", "--experimental-initial-corrupt-check=true", "--experimental-watch-progress-notify-interval=5s", fmt.Sprintf("--listen-client-urls=https://127.0.0.1:%d,https://1.2.3.4:%d", kubeadmconstants.EtcdListenClientPort, kubeadmconstants.EtcdListenClientPort), fmt.Sprintf("--listen-metrics-urls=http://127.0.0.1:%d", kubeadmconstants.EtcdMetricsPort), fmt.Sprintf("--advertise-client-urls=https://1.2.3.4:%d", kubeadmconstants.EtcdListenClientPort), fmt.Sprintf("--listen-peer-urls=https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort), fmt.Sprintf("--initial-advertise-peer-urls=https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort), "--data-dir=/var/lib/etcd", "--cert-file=" + filepath.FromSlash(kubeadmconstants.EtcdServerCertName), "--key-file=" + filepath.FromSlash(kubeadmconstants.EtcdServerKeyName), "--trusted-ca-file=" + filepath.FromSlash(kubeadmconstants.EtcdCACertName), "--client-cert-auth=true", "--peer-cert-file=" + filepath.FromSlash(kubeadmconstants.EtcdPeerCertName), "--peer-key-file=" + filepath.FromSlash(kubeadmconstants.EtcdPeerKeyName), "--peer-trusted-ca-file=" + filepath.FromSlash(kubeadmconstants.EtcdCACertName), "--snapshot-count=10000", "--peer-client-cert-auth=true", fmt.Sprintf("--initial-cluster=foo=https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort), }, }, { name: "Default args - With an existing etcd cluster", advertiseAddress: "1.2.3.4", nodeName: "foo", initialCluster: []etcdutil.Member{ {Name: "foo", PeerURL: fmt.Sprintf("https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort)}, // NB. the joining etcd instance should be part of the initialCluster list {Name: "bar", PeerURL: fmt.Sprintf("https://5.6.7.8:%d", kubeadmconstants.EtcdListenPeerPort)}, }, expected: []string{ "etcd", "--name=foo", "--experimental-initial-corrupt-check=true", "--experimental-watch-progress-notify-interval=5s", fmt.Sprintf("--listen-client-urls=https://127.0.0.1:%d,https://1.2.3.4:%d", kubeadmconstants.EtcdListenClientPort, kubeadmconstants.EtcdListenClientPort), fmt.Sprintf("--listen-metrics-urls=http://127.0.0.1:%d", kubeadmconstants.EtcdMetricsPort), fmt.Sprintf("--advertise-client-urls=https://1.2.3.4:%d", kubeadmconstants.EtcdListenClientPort), fmt.Sprintf("--listen-peer-urls=https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort), fmt.Sprintf("--initial-advertise-peer-urls=https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort), "--data-dir=/var/lib/etcd", "--cert-file=" + filepath.FromSlash(kubeadmconstants.EtcdServerCertName), "--key-file=" + filepath.FromSlash(kubeadmconstants.EtcdServerKeyName), "--trusted-ca-file=" + filepath.FromSlash(kubeadmconstants.EtcdCACertName), "--client-cert-auth=true", "--peer-cert-file=" + filepath.FromSlash(kubeadmconstants.EtcdPeerCertName), "--peer-key-file=" + filepath.FromSlash(kubeadmconstants.EtcdPeerKeyName), "--peer-trusted-ca-file=" + filepath.FromSlash(kubeadmconstants.EtcdCACertName), "--snapshot-count=10000", "--peer-client-cert-auth=true", "--initial-cluster-state=existing", fmt.Sprintf("--initial-cluster=foo=https://1.2.3.4:%d,bar=https://5.6.7.8:%d", kubeadmconstants.EtcdListenPeerPort, kubeadmconstants.EtcdListenPeerPort), }, }, { name: "Extra args", advertiseAddress: "1.2.3.4", nodeName: "bar", extraArgs: []kubeadmapi.Arg{ {Name: "listen-client-urls", Value: "https://10.0.1.10:2379"}, {Name: "advertise-client-urls", Value: "https://10.0.1.10:2379"}, }, expected: []string{ "etcd", "--name=bar", "--experimental-initial-corrupt-check=true", "--experimental-watch-progress-notify-interval=5s", "--listen-client-urls=https://10.0.1.10:2379", fmt.Sprintf("--listen-metrics-urls=http://127.0.0.1:%d", kubeadmconstants.EtcdMetricsPort), "--advertise-client-urls=https://10.0.1.10:2379", fmt.Sprintf("--listen-peer-urls=https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort), fmt.Sprintf("--initial-advertise-peer-urls=https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort), "--data-dir=/var/lib/etcd", "--cert-file=" + filepath.FromSlash(kubeadmconstants.EtcdServerCertName), "--key-file=" + filepath.FromSlash(kubeadmconstants.EtcdServerKeyName), "--trusted-ca-file=" + filepath.FromSlash(kubeadmconstants.EtcdCACertName), "--client-cert-auth=true", "--peer-cert-file=" + filepath.FromSlash(kubeadmconstants.EtcdPeerCertName), "--peer-key-file=" + filepath.FromSlash(kubeadmconstants.EtcdPeerKeyName), "--peer-trusted-ca-file=" + filepath.FromSlash(kubeadmconstants.EtcdCACertName), "--snapshot-count=10000", "--peer-client-cert-auth=true", fmt.Sprintf("--initial-cluster=bar=https://1.2.3.4:%d", kubeadmconstants.EtcdListenPeerPort), }, }, { name: "IPv6 advertise address", advertiseAddress: "2001:db8::3", nodeName: "foo", expected: []string{ "etcd", "--name=foo", "--experimental-initial-corrupt-check=true", "--experimental-watch-progress-notify-interval=5s", fmt.Sprintf("--listen-client-urls=https://[::1]:%d,https://[2001:db8::3]:%d", kubeadmconstants.EtcdListenClientPort, kubeadmconstants.EtcdListenClientPort), fmt.Sprintf("--listen-metrics-urls=http://[::1]:%d", kubeadmconstants.EtcdMetricsPort), fmt.Sprintf("--advertise-client-urls=https://[2001:db8::3]:%d", kubeadmconstants.EtcdListenClientPort), fmt.Sprintf("--listen-peer-urls=https://[2001:db8::3]:%d", kubeadmconstants.EtcdListenPeerPort), fmt.Sprintf("--initial-advertise-peer-urls=https://[2001:db8::3]:%d", kubeadmconstants.EtcdListenPeerPort), "--data-dir=/var/lib/etcd", "--cert-file=" + filepath.FromSlash(kubeadmconstants.EtcdServerCertName), "--key-file=" + filepath.FromSlash(kubeadmconstants.EtcdServerKeyName), "--trusted-ca-file=" + filepath.FromSlash(kubeadmconstants.EtcdCACertName), "--client-cert-auth=true", "--peer-cert-file=" + filepath.FromSlash(kubeadmconstants.EtcdPeerCertName), "--peer-key-file=" + filepath.FromSlash(kubeadmconstants.EtcdPeerKeyName), "--peer-trusted-ca-file=" + filepath.FromSlash(kubeadmconstants.EtcdCACertName), "--snapshot-count=10000", "--peer-client-cert-auth=true", fmt.Sprintf("--initial-cluster=foo=https://[2001:db8::3]:%d", kubeadmconstants.EtcdListenPeerPort), }, }, } for _, rt := range tests { t.Run(rt.name, func(t *testing.T) { endpoint := &kubeadmapi.APIEndpoint{ AdvertiseAddress: rt.advertiseAddress, } cfg := &kubeadmapi.ClusterConfiguration{ Etcd: kubeadmapi.Etcd{ Local: &kubeadmapi.LocalEtcd{ DataDir: "/var/lib/etcd", ExtraArgs: rt.extraArgs, }, }, } actual := getEtcdCommand(cfg, endpoint, rt.nodeName, rt.initialCluster) sort.Strings(actual) sort.Strings(rt.expected) if !reflect.DeepEqual(actual, rt.expected) { t.Errorf("failed getEtcdCommand:\nexpected:\n%v\nsaw:\n%v", rt.expected, actual) } }) } }