Kubernetes系列:Kubernetes Dashboard
15.1.Dashboard
作为Kube认得Web用户界面,用户可以通过Dashboard在Kubernetes集群中部署容器化的应用,对应用进行问题处理和管理,并对集群本身进行管理。通过Dashboard,用户可以查看集群中应用的运行情况,同时也能够基于Dashboard创建或修改部署、任务、服务等Kubernetes的资源。通过部署向导,用户能够对部署进行扩容缩容,进行滚动更新。重启Pod或部署新应用,也能够查看Kubernetes资源的状态。
dashboard-secret.yaml
apiVersion: v1 kind: Secret metadata: labels: k8s-app: kubernetes-dashboard # Allows editing resource and makes sure it is created first. addonmanager.kubernetes.io/mode: EnsureExists name: kubernetes-dashboard-certs namespace: kube-system type: Opaque --- apiVersion: v1 kind: Secret metadata: labels: k8s-app: kubernetes-dashboard # Allows editing resource and makes sure it is created first. addonmanager.kubernetes.io/mode: EnsureExists name: kubernetes-dashboard-key-holder namespace: kube-system type: Opaque
dashboard-configmap.yaml
apiVersion: v1 kind: ConfigMap metadata: labels: k8s-app: kubernetes-dashboard # Allows editing resource and makes sure it is created first. addonmanager.kubernetes.io/mode: EnsureExists name: kubernetes-dashboard-settings namespace: kube-system
dashboard-service.yaml
apiVersion: v1 kind: Service metadata: name: kubernetes-dashboard namespace: kube-system labels: k8s-app: kubernetes-dashboard kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile spec: selector: k8s-app: kubernetes-dashboard type: NodePort ports: - port: 443 targetPort: 8443
dashboard-rbac.yaml
kind: Role apiVersion: rbac.authorization.k8s.io/v1 metadata: labels: k8s-app: kubernetes-dashboard addonmanager.kubernetes.io/mode: Reconcile name: kubernetes-dashboard-minimal namespace: kube-system rules: # Allow Dashboard to get, update and delete Dashboard exclusive secrets. - apiGroups: [""] resources: ["secrets"] resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs"] verbs: ["get", "update", "delete"] # Allow Dashboard to get and update ‘kubernetes-dashboard-settings‘ config map. - apiGroups: [""] resources: ["configmaps"] resourceNames: ["kubernetes-dashboard-settings"] verbs: ["get", "update"] # Allow Dashboard to get metrics from heapster. - apiGroups: [""] resources: ["services"] resourceNames: ["heapster"] verbs: ["proxy"] - apiGroups: [""] resources: ["services/proxy"] resourceNames: ["heapster", "http:heapster:", "https:heapster:"] verbs: ["get"] --- apiVersion: rbac.authorization.k8s.io/v1 kind: RoleBinding metadata: name: kubernetes-dashboard-minimal namespace: kube-system labels: k8s-app: kubernetes-dashboard addonmanager.kubernetes.io/mode: Reconcile roleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: kubernetes-dashboard-minimal subjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kube-system --- apiVersion: rbac.authorization.k8s.io/v1beta1 kind: ClusterRoleBinding metadata: name: kubernetes-dashboard-crb roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: admin subjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kube-system
dashboard-controller.yaml
apiVersion: v1 kind: ServiceAccount metadata: labels: k8s-app: kubernetes-dashboard addonmanager.kubernetes.io/mode: Reconcile name: kubernetes-dashboard namespace: kube-system --- apiVersion: apps/v1 kind: Deployment metadata: name: kubernetes-dashboard namespace: kube-system labels: k8s-app: kubernetes-dashboard kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile spec: selector: matchLabels: k8s-app: kubernetes-dashboard template: metadata: labels: k8s-app: kubernetes-dashboard annotations: scheduler.alpha.kubernetes.io/critical-pod: ‘‘ seccomp.security.alpha.kubernetes.io/pod: ‘docker/default‘ spec: priorityClassName: system-cluster-critical containers: - name: kubernetes-dashboard #image: k8s.gcr.io/kubernetes-dashboard-amd64:v1.8.3 image: dockeryanxiao/kubernetes-dashboard-amd64 resources: limits: cpu: 100m memory: 300Mi requests: cpu: 50m memory: 100Mi ports: - containerPort: 8443 protocol: TCP args: # PLATFORM-SPECIFIC ARGS HERE - --auto-generate-certificates volumeMounts: - name: kubernetes-dashboard-certs mountPath: /certs - name: tmp-volume mountPath: /tmp livenessProbe: httpGet: scheme: HTTPS path: / port: 8443 initialDelaySeconds: 30 timeoutSeconds: 30 volumes: - name: kubernetes-dashboard-certs secret: secretName: kubernetes-dashboard-certs - name: tmp-volume emptyDir: {} serviceAccountName: kubernetes-dashboard tolerations: - key: "CriticalAddonsOnly" operator: "Exists"
提交资源后查看svc对外提供服务的端口访问:https://node:svc-port。查看访问token后使用token登录:
kubectl describe secret $(kubectl get secret -n kube-system |grep dashboard-token | awk ‘{print $1}‘) -n kube-system
15.2.heapster
heapster-serviceaccount.yaml
apiVersion: v1 kind: ServiceAccount metadata: name: heapster namespace: kube-system --- kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1beta1 metadata: name: heapster roleRef: kind: ClusterRole name: cluster-admin apiGroup: rbac.authorization.k8s.io subjects: - kind: ServiceAccount name: heapster namespace: kube-system
heapster-service.yaml
apiVersion: v1 kind: Service metadata: name: heapster namespace: kube-system spec: selector: k8s-app: heapster ports: - port: 80 targetPort: 8082
heapster.yaml
apiVersion: extensions/v1beta1 kind: Deployment metadata: name: heapster namespace: kube-system spec: replicas: 1 template: metadata: labels: task: monitoring k8s-app: heapster spec: serviceAccountName: heapster containers: - name: heapster image: registry.cn-hangzhou.aliyuncs.com/google-containers/heapster-amd64:v1.5.1 imagePullPolicy: IfNotPresent command: - /heapster #- --source=kubernetes:kubernetes:https://kubernetes.default?useServiceAccount=true&kubeletHttps=true&kubeletPort=10250&insecure=true #- --source=kubernetes:https://kubernetes.default #- --sink=influxdb:http://monitoring-influxdb:8086 #- --source=kubernetes:https://kuberntes.default:443?useServiceAccount=true&kubeletHttps=true&kubeletPort=10250&insecure=true - --source=kubernetes:kubernetes:https://kuberntes.default?useServiceAccount=true&kubeletHttps=true&kubeletPort=10250&insecure=true - --metric-resolution=10s
安装后dashboard界面会显示更多功能:
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