容器集群k8s从入门到精通之DashBoard(第十章)

第十章 DashBoard

​ 之前在kubernetes中完成的所有操作都是通过命令行工具kubectl完成的。其实,为了提供更丰富的用户体验,kubernetes还开发了一个基于web的用户界面(Dashboard)。用户可以使用Dashboard部署容器化的应用,还可以监控应用的状态,执行故障排查以及管理kubernetes中各种资源。

部署Dashboard

  1. 下载yaml,并运行Dashboard
# 下载yaml
[root@master ~]# wget  https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml

# 修改kubernetes-dashboard的Service类型
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  type: NodePort  # 新增
  ports:
    - port: 443
      targetPort: 8443
      nodePort: 30009  # 新增
  selector:
    k8s-app: kubernetes-dashboard

# 部署
[root@master ~]# kubectl create -f recommended.yaml

# 查看namespace下的kubernetes-dashboard下的资源
[root@master ~]# kubectl get pod,svc -n kubernetes-dashboard
NAME                                            READY   STATUS    RESTARTS   AGE
pod/dashboard-metrics-scraper-c79c65bb7-zwfvw   1/1     Running   0          111s
pod/kubernetes-dashboard-56484d4c5-z95z5        1/1     Running   0          111s

NAME                               TYPE       CLUSTER-IP      EXTERNAL-IP  PORT(S)         AGE
service/dashboard-metrics-scraper  ClusterIP  10.96.89.218    <none>       8000/TCP        111s
service/kubernetes-dashboard       NodePort   10.104.178.171  <none>       443:30009/TCP   111s

2)创建访问账户,获取token

# 创建账号
[root@master-1 ~]# kubectl create serviceaccount dashboard-admin -n kubernetes-dashboard

# 授权
[root@master-1 ~]# kubectl create clusterrolebinding dashboard-admin-rb --clusterrole=cluster-admin --serviceaccount=kubernetes-dashboard:dashboard-admin

# 获取账号token
[root@master ~]#  kubectl get secrets -n kubernetes-dashboard | grep dashboard-admin
dashboard-admin-token-xbqhh        kubernetes.io/service-account-token   3      2m35s

[root@master ~]# kubectl describe secrets dashboard-admin-token-xbqhh -n kubernetes-dashboard
Name:         dashboard-admin-token-xbqhh
Namespace:    kubernetes-dashboard
Labels:       <none>
Annotations:  kubernetes.io/service-account.name: dashboard-admin
              kubernetes.io/service-account.uid: 95d84d80-be7a-4d10-a2e0-68f90222d039

Type:  kubernetes.io/service-account-token

Data
====
namespace:  20 bytes
token:      eyJhbGciOiJSUzI1NiIsImtpZCI6ImJrYkF4bW5XcDhWcmNGUGJtek5NODFuSXl1aWptMmU2M3o4LTY5a2FKS2cifQ.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.NAl7e8ZfWWdDoPxkqzJzTB46sK9E8iuJYnUI9vnBaY3Jts7T1g1msjsBnbxzQSYgAG--cV0WYxjndzJY_UWCwaGPrQrt_GunxmOK9AUnzURqm55GR2RXIZtjsWVP2EBatsDgHRmuUbQvTFOvdJB4x3nXcYLN2opAaMqg3rnU2rr-A8zCrIuX_eca12wIp_QiuP3SF-tzpdLpsyRfegTJZl6YnSGyaVkC9id-cxZRb307qdCfXPfCHR_2rt5FVfxARgg_C0e3eFHaaYQO7CitxsnIoIXpOFNAR8aUrmopJyODQIPqBWUehb7FhlU1DCduHnIIXVC_UICZ-MKYewBDLw
ca.crt:     1025 bytes

3)通过浏览器访问Dashboard的UI

在登录页面上输入上面的token

容器集群k8s从入门到精通之DashBoard(第十章)

出现下面的页面代表成功

容器集群k8s从入门到精通之DashBoard(第十章)

使用DashBoard

本章节以Deployment为例演示DashBoard的使用

查看

选择指定的命名空间dev,然后点击Deployments,查看dev空间下的所有deployment

容器集群k8s从入门到精通之DashBoard(第十章)

扩缩容

Deployment上点击规模,然后指定目标副本数量,点击确定

容器集群k8s从入门到精通之DashBoard(第十章)

编辑

Deployment上点击编辑,然后修改yaml文件,点击确定

容器集群k8s从入门到精通之DashBoard(第十章)

查看Pod

点击Pods, 查看pods列表

容器集群k8s从入门到精通之DashBoard(第十章)

操作Pod

选中某个Pod,可以对其执行日志(logs)、进入执行(exec)、编辑、删除操作

容器集群k8s从入门到精通之DashBoard(第十章)

Dashboard提供了kubectl的绝大部分功能,这里不再一一演示

目录

容器集群k8s从入门到精通之kubernates介绍(第一章)
容器集群k8s从入门到精通之集群环境搭建(第二章)
容器集群k8s从入门到精通之资源管理(第三章)
容器集群k8s从入门到精通之实战入门(第四章)
容器集群k8s从入门到精通之 Pod详解(第五章)
容器集群k8s从入门到精通之Pod控制器详解(第六章)
容器集群k8s从入门到精通之Service详解(第七章)
容器集群k8s从入门到精通之数据存储(第八章)
容器集群k8s从入门到精通之安全认证(第九章)
容器集群k8s从入门到精通之DashBoard(第十章)

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