/* 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 selfhosting import ( "bytes" "fmt" "io/ioutil" "os" "testing" "github.com/ghodss/yaml" kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm" ) const ( testAPIServerPod = ` apiVersion: v1 kind: Pod metadata: annotations: scheduler.alpha.kubernetes.io/critical-pod: "" creationTimestamp: null labels: component: kube-apiserver tier: control-plane name: kube-apiserver namespace: kube-system spec: containers: - command: - kube-apiserver - --client-ca-file=/etc/kubernetes/pki/ca.crt - --tls-private-key-file=/etc/kubernetes/pki/apiserver.key - --allow-privileged=true - --service-cluster-ip-range=10.96.0.0/12 - --service-account-key-file=/etc/kubernetes/pki/sa.pub - --tls-cert-file=/etc/kubernetes/pki/apiserver.crt - --kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt - --secure-port=6443 - --insecure-port=0 - --admission-control=Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota - --requestheader-extra-headers-prefix=X-Remote-Extra- - --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt - --experimental-bootstrap-token-auth=true - --requestheader-group-headers=X-Remote-Group - --requestheader-allowed-names=front-proxy-client - --kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key - --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt - --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname - --requestheader-username-headers=X-Remote-User - --authorization-mode=Node,RBAC - --advertise-address=192.168.200.101 - --etcd-servers=http://127.0.0.1:2379 image: gcr.io/google_containers/kube-apiserver-amd64:v1.7.0 livenessProbe: failureThreshold: 8 httpGet: host: 127.0.0.1 path: /healthz port: 6443 scheme: HTTPS initialDelaySeconds: 15 timeoutSeconds: 15 name: kube-apiserver resources: requests: cpu: 250m volumeMounts: - mountPath: /etc/kubernetes name: k8s readOnly: true - mountPath: /etc/ssl/certs name: certs - mountPath: /etc/pki name: pki hostNetwork: true volumes: - name: k8s projected: sources: - secret: items: - key: tls.crt path: ca.crt - key: tls.key path: ca.key name: ca - secret: items: - key: tls.crt path: apiserver.crt - key: tls.key path: apiserver.key name: apiserver - secret: items: - key: tls.crt path: apiserver-kubelet-client.crt - key: tls.key path: apiserver-kubelet-client.key name: apiserver-kubelet-client - secret: items: - key: tls.crt path: sa.pub - key: tls.key path: sa.key name: sa - secret: items: - key: tls.crt path: front-proxy-ca.crt name: front-proxy-ca - secret: items: - key: tls.crt path: front-proxy-client.crt - key: tls.key path: front-proxy-client.key name: front-proxy-client - hostPath: path: /etc/ssl/certs name: certs - hostPath: path: /etc/pki name: pki status: {} ` testAPIServerDaemonSet = `metadata: creationTimestamp: null labels: k8s-app: self-hosted-kube-apiserver name: self-hosted-kube-apiserver namespace: kube-system spec: template: metadata: creationTimestamp: null labels: k8s-app: self-hosted-kube-apiserver spec: containers: - command: - kube-apiserver - --client-ca-file=/etc/kubernetes/pki/ca.crt - --tls-private-key-file=/etc/kubernetes/pki/apiserver.key - --allow-privileged=true - --service-cluster-ip-range=10.96.0.0/12 - --service-account-key-file=/etc/kubernetes/pki/sa.pub - --tls-cert-file=/etc/kubernetes/pki/apiserver.crt - --kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt - --secure-port=6443 - --insecure-port=0 - --admission-control=Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota - --requestheader-extra-headers-prefix=X-Remote-Extra- - --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt - --experimental-bootstrap-token-auth=true - --requestheader-group-headers=X-Remote-Group - --requestheader-allowed-names=front-proxy-client - --kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key - --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt - --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key - --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname - --requestheader-username-headers=X-Remote-User - --authorization-mode=Node,RBAC - --advertise-address=192.168.200.101 - --etcd-servers=http://127.0.0.1:2379 image: gcr.io/google_containers/kube-apiserver-amd64:v1.7.0 livenessProbe: failureThreshold: 8 httpGet: host: 127.0.0.1 path: /healthz port: 6443 scheme: HTTPS initialDelaySeconds: 15 timeoutSeconds: 15 name: kube-apiserver resources: requests: cpu: 250m volumeMounts: - mountPath: /etc/kubernetes name: k8s readOnly: true - mountPath: /etc/ssl/certs name: certs - mountPath: /etc/pki name: pki dnsPolicy: ClusterFirstWithHostNet hostNetwork: true nodeSelector: node-role.kubernetes.io/master: "" tolerations: - effect: NoSchedule key: node-role.kubernetes.io/master volumes: - name: k8s projected: sources: - secret: items: - key: tls.crt path: ca.crt - key: tls.key path: ca.key name: ca - secret: items: - key: tls.crt path: apiserver.crt - key: tls.key path: apiserver.key name: apiserver - secret: items: - key: tls.crt path: apiserver-kubelet-client.crt - key: tls.key path: apiserver-kubelet-client.key name: apiserver-kubelet-client - secret: items: - key: tls.crt path: sa.pub - key: tls.key path: sa.key name: sa - secret: items: - key: tls.crt path: front-proxy-ca.crt name: front-proxy-ca - secret: items: - key: tls.crt path: front-proxy-client.crt - key: tls.key path: front-proxy-client.key name: front-proxy-client - hostPath: path: /etc/ssl/certs name: certs - hostPath: path: /etc/pki name: pki updateStrategy: {} status: currentNumberScheduled: 0 desiredNumberScheduled: 0 numberMisscheduled: 0 numberReady: 0 ` testControllerManagerPod = ` apiVersion: v1 kind: Pod metadata: annotations: scheduler.alpha.kubernetes.io/critical-pod: "" creationTimestamp: null labels: component: kube-controller-manager tier: control-plane name: kube-controller-manager namespace: kube-system spec: containers: - command: - kube-controller-manager - --service-account-private-key-file=/etc/kubernetes/pki/sa.key - --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt - --cluster-signing-key-file=/etc/kubernetes/pki/ca.key - --leader-elect=true - --kubeconfig=/etc/kubernetes/controller-manager.conf - --controllers=*,bootstrapsigner,tokencleaner - --root-ca-file=/etc/kubernetes/pki/ca.crt - --address=127.0.0.1 - --use-service-account-credentials=true image: gcr.io/google_containers/kube-controller-manager-amd64:v1.7.0 livenessProbe: failureThreshold: 8 httpGet: host: 127.0.0.1 path: /healthz port: 10252 scheme: HTTP initialDelaySeconds: 15 timeoutSeconds: 15 name: kube-controller-manager resources: requests: cpu: 200m volumeMounts: - mountPath: /etc/kubernetes name: k8s readOnly: true - mountPath: /etc/ssl/certs name: certs - mountPath: /etc/pki name: pki hostNetwork: true volumes: - name: k8s projected: sources: - secret: name: controller-manager.conf - secret: items: - key: tls.crt path: ca.crt - key: tls.key path: ca.key name: ca - secret: items: - key: tls.key path: sa.key name: sa - hostPath: path: /etc/ssl/certs name: certs - hostPath: path: /etc/pki name: pki status: {} ` testControllerManagerDaemonSet = `metadata: creationTimestamp: null labels: k8s-app: self-hosted-kube-controller-manager name: self-hosted-kube-controller-manager namespace: kube-system spec: template: metadata: creationTimestamp: null labels: k8s-app: self-hosted-kube-controller-manager spec: containers: - command: - kube-controller-manager - --service-account-private-key-file=/etc/kubernetes/pki/sa.key - --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt - --cluster-signing-key-file=/etc/kubernetes/pki/ca.key - --leader-elect=true - --kubeconfig=/etc/kubernetes/controller-manager.conf - --controllers=*,bootstrapsigner,tokencleaner - --root-ca-file=/etc/kubernetes/pki/ca.crt - --address=127.0.0.1 - --use-service-account-credentials=true image: gcr.io/google_containers/kube-controller-manager-amd64:v1.7.0 livenessProbe: failureThreshold: 8 httpGet: host: 127.0.0.1 path: /healthz port: 10252 scheme: HTTP initialDelaySeconds: 15 timeoutSeconds: 15 name: kube-controller-manager resources: requests: cpu: 200m volumeMounts: - mountPath: /etc/kubernetes name: k8s readOnly: true - mountPath: /etc/ssl/certs name: certs - mountPath: /etc/pki name: pki dnsPolicy: ClusterFirstWithHostNet hostNetwork: true nodeSelector: node-role.kubernetes.io/master: "" tolerations: - effect: NoSchedule key: node-role.kubernetes.io/master volumes: - name: k8s projected: sources: - secret: name: controller-manager.conf - secret: items: - key: tls.crt path: ca.crt - key: tls.key path: ca.key name: ca - secret: items: - key: tls.key path: sa.key name: sa - hostPath: path: /etc/ssl/certs name: certs - hostPath: path: /etc/pki name: pki updateStrategy: {} status: currentNumberScheduled: 0 desiredNumberScheduled: 0 numberMisscheduled: 0 numberReady: 0 ` testSchedulerPod = ` apiVersion: v1 kind: Pod metadata: annotations: scheduler.alpha.kubernetes.io/critical-pod: "" creationTimestamp: null labels: component: kube-scheduler tier: control-plane name: kube-scheduler namespace: kube-system spec: containers: - command: - kube-scheduler - --address=127.0.0.1 - --leader-elect=true - --kubeconfig=/etc/kubernetes/scheduler.conf image: gcr.io/google_containers/kube-scheduler-amd64:v1.7.0 livenessProbe: failureThreshold: 8 httpGet: host: 127.0.0.1 path: /healthz port: 10251 scheme: HTTP initialDelaySeconds: 15 timeoutSeconds: 15 name: kube-scheduler resources: requests: cpu: 100m volumeMounts: - mountPath: /etc/kubernetes name: k8s readOnly: true hostNetwork: true volumes: - name: k8s projected: sources: - secret: name: scheduler.conf status: {} ` testSchedulerDaemonSet = `metadata: creationTimestamp: null labels: k8s-app: self-hosted-kube-scheduler name: self-hosted-kube-scheduler namespace: kube-system spec: template: metadata: creationTimestamp: null labels: k8s-app: self-hosted-kube-scheduler spec: containers: - command: - kube-scheduler - --address=127.0.0.1 - --leader-elect=true - --kubeconfig=/etc/kubernetes/scheduler.conf image: gcr.io/google_containers/kube-scheduler-amd64:v1.7.0 livenessProbe: failureThreshold: 8 httpGet: host: 127.0.0.1 path: /healthz port: 10251 scheme: HTTP initialDelaySeconds: 15 timeoutSeconds: 15 name: kube-scheduler resources: requests: cpu: 100m volumeMounts: - mountPath: /etc/kubernetes name: k8s readOnly: true dnsPolicy: ClusterFirstWithHostNet hostNetwork: true nodeSelector: node-role.kubernetes.io/master: "" tolerations: - effect: NoSchedule key: node-role.kubernetes.io/master volumes: - name: k8s projected: sources: - secret: name: scheduler.conf updateStrategy: {} status: currentNumberScheduled: 0 desiredNumberScheduled: 0 numberMisscheduled: 0 numberReady: 0 ` ) func TestBuildDaemonSet(t *testing.T) { var tests = []struct { component string podBytes []byte dsBytes []byte }{ { component: kubeAPIServer, podBytes: []byte(testAPIServerPod), dsBytes: []byte(testAPIServerDaemonSet), }, { component: kubeControllerManager, podBytes: []byte(testControllerManagerPod), dsBytes: []byte(testControllerManagerDaemonSet), }, { component: kubeScheduler, podBytes: []byte(testSchedulerPod), dsBytes: []byte(testSchedulerDaemonSet), }, } for _, rt := range tests { tempFile, err := createTempFileWithContent(rt.podBytes) defer os.Remove(tempFile) podSpec, err := loadPodSpecFromFile(tempFile) if err != nil { t.Fatalf("couldn't load the specified Pod") } cfg := &kubeadmapi.MasterConfiguration{} ds := buildDaemonSet(cfg, rt.component, podSpec) dsBytes, err := yaml.Marshal(ds) if err != nil { t.Fatalf("failed to marshal daemonset to YAML: %v", err) } if !bytes.Equal(dsBytes, rt.dsBytes) { t.Errorf("failed TestBuildDaemonSet:\nexpected:\n%s\nsaw:\n%s", rt.dsBytes, dsBytes) } } } func TestLoadPodSpecFromFile(t *testing.T) { tests := []struct { content string expectError bool }{ { // Good YAML content: ` apiVersion: v1 kind: Pod metadata: name: testpod spec: containers: - image: gcr.io/google_containers/busybox `, expectError: false, }, { // Good JSON content: ` { "apiVersion": "v1", "kind": "Pod", "metadata": { "name": "testpod" }, "spec": { "containers": [ { "image": "gcr.io/google_containers/busybox" } ] } }`, expectError: false, }, { // Bad PodSpec content: ` apiVersion: v1 kind: Pod metadata: name: testpod spec: - image: gcr.io/google_containers/busybox `, expectError: true, }, } for _, rt := range tests { tempFile, err := createTempFileWithContent([]byte(rt.content)) defer os.Remove(tempFile) _, err = loadPodSpecFromFile(tempFile) if (err != nil) != rt.expectError { t.Errorf("failed TestLoadPodSpecFromFile:\nexpected error:\n%t\nsaw:\n%v", rt.expectError, err) } } } func createTempFileWithContent(content []byte) (string, error) { tempFile, err := ioutil.TempFile("", "") if err != nil { return "", fmt.Errorf("cannot create temporary file: %v", err) } if _, err = tempFile.Write([]byte(content)); err != nil { return "", fmt.Errorf("cannot save temporary file: %v", err) } if err = tempFile.Close(); err != nil { return "", fmt.Errorf("cannot close temporary file: %v", err) } return tempFile.Name(), nil }