Kubernetes Dashboard v2.0.0 尝鲜
16lz
2021-03-12
原文地址：http://www.mydlq.club/article/28/
目录[-]
一、简介
二、兼容性
三、部署 Kubernetes Dashboard
1、Dashboard RBAC
2、创建 ConfigMap、Secret
3、kubernetes-dashboard
4、创建 kubernetes-metrics-scraper
5、创建访问的 ServiceAccount
四、登录新版本 Dashboard 查看
系统环境：
Kubernetes 版本：1.15.3
- kubernetes-dashboard 版本：v2.0.0-beta4
一、简介
Kubernetes Dashboard 是 Kubernetes 集群的基于 Web 的通用 UI。它允许用户管理在群集中运行的应用程序并对其进行故障排除，以及管理群集本身。这个项目在 Github 已经有半年多不更新了，最近推出了 v2.0.0-beta4 版本，这里在 Kubernetes 中部署一下，尝试看看新版本咋样。
二、兼容性
✕ 不支持的版本范围。
✓ 完全支持的版本范围。
- ? 由于Kubernetes API版本之间的重大更改，某些功能可能无法在仪表板中正常运行。
三、部署 Kubernetes Dashboard
注意：如果“kube-system”命名空间已经存在 Kubernetes-Dashboard 相关资源，请换成别的 Namespace。
完整部署文件 Github 地址：https://github.com/my-dlq/blog-example/tree/master/kubernetes-dashboard2.0.0-beta4-deploy
1、Dashboard RBAC
创建 Dashboard RBAC 部署文件
k8s-dashboard-rbac.yaml
apiVersion: v1kind: ServiceAccountmetadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kube-system---apiVersion: rbac.authorization.k8s.io/v1kind: Rolemetadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kube-systemrules: # Allow Dashboard to get, update and delete Dashboard exclusive secrets. - apiGroups: [""] resources: ["secrets"] resourceNames: ["kubernetes-dashboard-key-holder", "kubernetes-dashboard-certs", "kubernetes-dashboard-csrf"] 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. - apiGroups: [""] resources: ["services"] resourceNames: ["heapster", "dashboard-metrics-scraper"] verbs: ["proxy"] - apiGroups: [""] resources: ["services/proxy"] resourceNames: ["heapster", "http:heapster:", "https:heapster:", "dashboard-metrics-scraper", "http:dashboard-metrics-scraper"] verbs: ["get"]---apiVersion: rbac.authorization.k8s.io/v1kind: ClusterRolemetadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboardrules: # Allow Metrics Scraper to get metrics from the Metrics server - apiGroups: ["metrics.k8s.io"] resources: ["pods", "nodes"] verbs: ["get", "list", "watch"]---apiVersion: rbac.authorization.k8s.io/v1kind: RoleBindingmetadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kube-systemroleRef: apiGroup: rbac.authorization.k8s.io kind: Role name: kubernetes-dashboardsubjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kube-system---apiVersion: rbac.authorization.k8s.io/v1kind: ClusterRoleBindingmetadata: name: kubernetes-dashboard namespace: kube-systemroleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: kubernetes-dashboardsubjects: - kind: ServiceAccount name: kubernetes-dashboard namespace: kube-system部署 Dashboard RBAC
$ kubectl apply -f k8s-dashboard-rbac.yaml2、创建 ConfigMap、Secret
创建 Dashboard Config & Secret 部署文件
k8s-dashboard-configmap-secret.yaml
apiVersion: v1kind: Secretmetadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-certs namespace: kube-systemtype: Opaque---apiVersion: v1kind: Secretmetadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-csrf namespace: kube-systemtype: Opaquedata: csrf: ""---apiVersion: v1kind: Secretmetadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-key-holder namespace: kube-systemtype: Opaque---kind: ConfigMapapiVersion: v1metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard-settings namespace: kube-system部署 Dashboard Config & Secret
$ kubectl apply -f k8s-dashboard-configmap-secret.yaml3、kubernetes-dashboard
创建 Dashboard Deploy 部署文件
k8s-dashboard-deploy.yaml
kind: ServiceapiVersion: v1metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kube-systemspec: type: NodePort ports: - port: 443 targetPort: 8443 nodePort: 31001 selector: k8s-app: kubernetes-dashboard---kind: DeploymentapiVersion: apps/v1metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kube-systemspec: replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: k8s-app: kubernetes-dashboard template: metadata: labels: k8s-app: kubernetes-dashboard spec: containers: - name: kubernetes-dashboard image: kubernetesui/dashboard:v2.0.0-beta4 ports: - containerPort: 8443 protocol: TCP args: - --auto-generate-certificates - --namespace=kube-system #设置为当前namespace volumeMounts: - name: kubernetes-dashboard-certs mountPath: /certs - mountPath: /tmp name: tmp-volume 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: node-role.kubernetes.io/master effect: NoSchedule部署 Dashboard Deploy
$ kubectl apply -f k8s-dashboard-deploy.yaml4、创建 kubernetes-metrics-scraper
创建 Dashboard Metrics 部署文件
k8s-dashboard-metrics.yaml
kind: ServiceapiVersion: v1metadata: labels: k8s-app: kubernetes-metrics-scraper name: dashboard-metrics-scraper namespace: kube-systemspec: ports: - port: 8000 targetPort: 8000 selector: k8s-app: kubernetes-metrics-scraper---kind: DeploymentapiVersion: apps/v1metadata: labels: k8s-app: kubernetes-metrics-scraper name: kubernetes-metrics-scraper namespace: kube-systemspec: replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: k8s-app: kubernetes-metrics-scraper template: metadata: labels: k8s-app: kubernetes-metrics-scraper spec: containers: - name: kubernetes-metrics-scraper image: kubernetesui/metrics-scraper:v1.0.1 ports: - containerPort: 8000 protocol: TCP livenessProbe: httpGet: scheme: HTTP path: / port: 8000 initialDelaySeconds: 30 timeoutSeconds: 30 serviceAccountName: kubernetes-dashboard tolerations: - key: node-role.kubernetes.io/master effect: NoSchedule部署 Dashboard Metrics
$ kubectl apply -f k8s-dashboard-metrics.yaml5、创建访问的 ServiceAccount
创建一个绑定 admin 权限的 ServiceAccount，获取其 Token 用于访问看板。
创建 Dashboard ServiceAccount 部署文件
k8s-dashboard-token.yaml
kind: ClusterRoleBindingapiVersion: rbac.authorization.k8s.io/v1metadata: name: admin annotations: rbac.authorization.kubernetes.io/autoupdate: "true"roleRef: kind: ClusterRole name: cluster-admin apiGroup: rbac.authorization.k8s.iosubjects:- kind: ServiceAccount name: admin namespace: kube-system---apiVersion: v1kind: ServiceAccountmetadata: name: admin namespace: kube-system labels: kubernetes.io/cluster-service: "true" addonmanager.kubernetes.io/mode: Reconcile部署访问的 ServiceAccount
$ kubectl apply -f k8s-dashboard-token.yaml获取 Token
$ kubectl describe secret/$(kubectl get secret -n kube-system |grep admin|awk '{print $1}') -n kube-systemtoken：
eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi10b2tlbi1iNGo0aCIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50Lm5hbWUiOiJhZG1pbiIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50LnVpZCI6IjkwMTQzMWYxLTVmNGItMTFlOS05Mjg3LTAwMGMyOWQ5ODY5NyIsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDprdWJlLXN5c3RlbTphZG1pbiJ9.iwE1UdhB78FgXZJh4ByyOZVNh7M1l2CmOOevihOrY9tl_Z5sf3i_04CA33xA2LAMg7WNVYPjGB7vszBlkQyDGw0H5kJzIfL1YnR0JeLQkNk3v9TLyRqKJA2n8pxmJQIJP1xq0OPRGOfcA_n_c5qESs9QFHejVc5vABim8VBGX-pefKoJVXgu3r4w8gr1ORn4l5-LtHdQjSz3Dys7HwZo71fX2aLQR5bOPurkFKXqymcUoBYpWVsf-0cyN7hLRO-x-Z1i-uVpdM8ClpYSHv49eoDJePrcWpRp-Ryq6SNpGhiqCjjifEQAVHbr36QSAx8I1aamqLcpA0Da2qnunw52JA四、登录新版本 Dashboard 查看
本人的 Kubernetes 集群地址为”192.168.2.11”并且在 Service 中设置了 NodePort 端口为 31001 和类型为 NodePort 方式访问 Dashboard ，所以访问地址：https://192.168.2.11:31001 进入 Kubernetes Dashboard 页面，然后输入上一步中创建的 ServiceAccount 的 Token 进入 Dashboard，可以看到新的 Dashboard。
可以感受到的是，这个页面比以前访问速度更加快速（估计是加了缓存），增加了暗黑模式，和编译对象时候增加了 yaml 格式的查看，整体风格更加简洁，并且新增角色对象可以直接在页面进行编译了。
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