Dashboard 是基于网页的 Kubernetes 用户界面。 你可以使用 Dashboard 将容器应用部署到 Kubernetes 集群中,也可以对容器应用排错,还能管理集群资源。 你可以使用 Dashboard 获取运行在集群中的应用的概览信息,也可以创建或者修改 Kubernetes 资源 (如 Deployment,Job,DaemonSet 等等)。 例如,你可以对 Deployment 实现弹性伸缩、发起滚动升级、重启 Pod 或者使用向导创建新的应用。
https://kubernetes.io/zh/docs/tasks/access-application-cluster/web-ui-dashboard/
可以通过以下命令部署:
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.5.0/aio/deploy/recommended.yaml
检验是否安装成功
$ kubectl get pods -A -o wide
kubernetes-dashboard dashboard-metrics-scraper-7bfdf779ff-cmxzt 1/1 Running 1 (4m14s ago) 3d4h 10.0.0.43 k8snode1 <none> <none>
kubernetes-dashboard kubernetes-dashboard-6cdd697d84-z6q5l 1/1 Running 1 (4m11s ago) 3d4h 10.0.1.20 k8snode2 <none> <none>
参考文档: https://github.com/kubernetes/dashboard/blob/master/docs/user/accessing-dashboard/README.md
你可以使用 kubectl 命令行工具来启用 Dashboard 访问,命令如下:
$ kubectl proxy
Starting to serve on 127.0.0.1:8001
kubectl 会使得 Dashboard 可以通过 http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/https:kubernetes-dashboard:/proxy/
访问
更多参数参考:kubectl proxy -h
请注意:UI只能在master这个机器上访问
通过以下命令开启转发:
$ kubectl port-forward -n kubernetes-dashboard service/kubernetes-dashboard 8080:443 --address=0.0.0.0
Forwarding from 0.0.0.0:8080 -> 8443
打开浏览器输入以下地址访问:https://192.168.56.3:8080
UI界面能访问了,但是没有token,还不能登录。
在master机器上创建dashboard.yml,并输入以下内容:
# Creating a Service Account
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin-user
namespace: kubernetes-dashboard
---
# Creating a ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
name: admin-user
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: admin-user
namespace: kubernetes-dashboard
运行:
$ kubectl apply -f dashboard.yml
serviceaccount/admin-user created
clusterrolebinding.rbac.authorization.k8s.io/admin-user created
生成token:
$ kubectl -n kubernetes-dashboard create token admin-user
eyJhbGciOiJSUzI1NiIsImtpZCI6ImF6RVB3WWNSZ001RTdacUFtWTBRdVBhRVVRLXZEdHg4cV9kblhFcldYSmcifQ.eyJhdWQiOlsiaHR0cHM6Ly9rdWJlcm5ldGVzLmRlZmF1bHQuc3ZjLmNsdXN0ZXIubG9jYWwiXSwiZXhwIjoxNjU0MzMyNTIxLCJpYXQiOjE2NTQzMjg5MjEsImlzcyI6Imh0dHBzOi8va3ViZXJuZXRlcy5kZWZhdWx0LnN2Yy5jbHVzdGVyLmxvY2FsIiwia3ViZXJuZXRlcy5pbyI6eyJuYW1lc3BhY2UiOiJrdWJlcm5ldGVzLWRhc2hib2FyZCIsInNlcnZpY2VhY2NvdW50Ijp7Im5hbWUiOiJhZG1pbi11c2VyIiwidWlkIjoiMDM3YTIwODYtMjZiYy00MDIyLWE5ZDAtNTVhNDJlYWI0MDBiIn19LCJuYmYiOjE2NTQzMjg5MjEsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDprdWJlcm5ldGVzLWRhc2hib2FyZDphZG1pbi11c2VyIn0.lBjrs8-ZavRr_pIXw8PMb6__kYuybAHUzZ8JdIFBckeWUmkuj0M9qjPr9EJHdfDpbJ2g2wAdMwka5KR0eEzPVQbD168V0z1HDfmAZPETMpjgPCURhxZCCMvK2ceg5xdxyfTDYnMAmJh3rstRlxCkmazi_Dc09VLA5LBPiU59zOPzalKHfC_l-7XXVXoJ3t6XKexj4QZZ5mvPfWgdzEJwfFLQvSymnEYJPI0o4973srvsOi7C3dNmFeL581YZNS3jfzIeyY0Efivpa-AxKisnRc9T2M6K6Ab8F_OyU0Q-1IHa9ZBqh2_4sQAhby_cAHQgarwKJ-Zaji82QtSLm89W_Q
然后重新开启端口转发,打开浏览器访问:https://192.168.56.3:8080
并输入上面生成的Token
成功登录后:
大门已为你开启,探索就交给你了!
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