08-27-周三_17-09-29
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Kubernetes/DashBoard.md
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Kubernetes/DashBoard.md
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# DashBoard
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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。
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## 部署Dashboard
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1) 下载yaml，并运行Dashboard
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```shell
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# 下载yaml
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[root@k8s-master01 ~]# wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yaml
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# 修改kubernetes-dashboard的Service类型
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kind: Service
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apiVersion: v1
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metadata:
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labels:
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k8s-app: kubernetes-dashboard
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name: kubernetes-dashboard
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namespace: kubernetes-dashboard
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spec:
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type: NodePort # 新增
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ports:
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- port: 443
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targetPort: 8443
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nodePort: 30009 # 新增
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selector:
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k8s-app: kubernetes-dashboard
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# 部署
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[root@k8s-master01 ~]# kubectl create -f recommended.yaml
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# 查看namespace下的kubernetes-dashboard下的资源
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[root@k8s-master01 ~]# kubectl get pod,svc -n kubernetes-dashboard
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NAME READY STATUS RESTARTS AGE
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pod/dashboard-metrics-scraper-c79c65bb7-zwfvw 1/1 Running 0 111s
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pod/kubernetes-dashboard-56484d4c5-z95z5 1/1 Running 0 111s
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NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
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service/dashboard-metrics-scraper ClusterIP 10.96.89.218 <none> 8000/TCP 111s
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service/kubernetes-dashboard NodePort 10.104.178.171 <none> 443:30009/TCP 111s
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```
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2）创建访问账户，获取token
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```shell
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# 创建账号
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[root@k8s-master01-1 ~]# kubectl create serviceaccount dashboard-admin -n kubernetes-dashboard
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# 授权
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[root@k8s-master01-1 ~]# kubectl create clusterrolebinding dashboard-admin-rb --clusterrole=cluster-admin --serviceaccount=kubernetes-dashboard:dashboard-admin
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# 获取账号token
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[root@k8s-master01 ~]# kubectl get secrets -n kubernetes-dashboard | grep dashboard-admin
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dashboard-admin-token-xbqhh kubernetes.io/service-account-token 3 2m35s
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[root@k8s-master01 ~]# kubectl describe secrets dashboard-admin-token-xbqhh -n kubernetes-dashboard
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Name: dashboard-admin-token-xbqhh
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Namespace: kubernetes-dashboard
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Labels: <none>
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Annotations: kubernetes.io/service-account.name: dashboard-admin
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kubernetes.io/service-account.uid: 95d84d80-be7a-4d10-a2e0-68f90222d039
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Type: kubernetes.io/service-account-token
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Data
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====
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namespace: 20 bytes
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token: eyJhbGciOiJSUzI1NiIsImtpZCI6ImJrYkF4bW5XcDhWcmNGUGJtek5NODFuSXl1aWptMmU2M3o4LTY5a2FKS2cifQ.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.NAl7e8ZfWWdDoPxkqzJzTB46sK9E8iuJYnUI9vnBaY3Jts7T1g1msjsBnbxzQSYgAG--cV0WYxjndzJY_UWCwaGPrQrt_GunxmOK9AUnzURqm55GR2RXIZtjsWVP2EBatsDgHRmuUbQvTFOvdJB4x3nXcYLN2opAaMqg3rnU2rr-A8zCrIuX_eca12wIp_QiuP3SF-tzpdLpsyRfegTJZl6YnSGyaVkC9id-cxZRb307qdCfXPfCHR_2rt5FVfxARgg_C0e3eFHaaYQO7CitxsnIoIXpOFNAR8aUrmopJyODQIPqBWUehb7FhlU1DCduHnIIXVC_UICZ-MKYewBDLw
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ca.crt: 1025 bytes
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```
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3）通过浏览器访问Dashboard的UI
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在登录页面上输入上面的token
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出现下面的页面代表成功
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## 使用DashBoard
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本章节以Deployment为例演示DashBoard的使用
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**查看**
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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
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**扩缩容**
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在`Deployment`上点击`规模`，然后指定`目标副本数量`，点击确定
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**编辑**
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在`Deployment`上点击`编辑`，然后修改`yaml文件`，点击确定
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**查看Pod**
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点击`Pods`, 查看pods列表
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**操作Pod**
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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
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> Dashboard提供了kubectl的绝大部分功能，这里不再一一演示
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# kuboard
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## 特点介绍
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相较于 Kubernetes Dashboard 等其他 Kubernetes 管理界面，Kuboard 的优势更加明显，官方网站：https://kuboard.cn/
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## 安装教程
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https://kuboard.cn/v4/install/quickstart.html
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安装好后链接上集群，最终界面如下
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