学习kubernetes——部署dashboard
一、安装dashboard
首先参考官方文档:https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/
官方的安装命令如下:
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0-beta8/aio/deploy/recommended.yaml
当有多个节点时,安装到非主节点时,会出现一些问题。dashboard使用https去连接apiServer,由于证书问题会导致dial tcp 10.96.0.1:443: i/o timeout。
把recommended.yaml下载下来,修改一些配置:
kind: Deployment apiVersion: apps/v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard spec: replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: k8s-app: kubernetes-dashboard template: metadata: labels: k8s-app: kubernetes-dashboard spec:
# 增加nodeName,指定安装到主节点。kubernetes-node1为主节点名称 nodeName: kubernetes-node1 containers: - name: kubernetes-dashboard image: kubernetesui/dashboard:v2.0.0-beta8 imagePullPolicy: Always ports: - containerPort: 8443 protocol: TCP args: - --auto-generate-certificates - --namespace=kubernetes-dashboard # Uncomment the following line to manually specify Kubernetes API server Host # If not specified, Dashboard will attempt to auto discover the API server and connect # to it. Uncomment only if the default does not work. # - --apiserver-host=http://my-address:port
注释下面的一些配置
volumes: - name: kubernetes-dashboard-certs secret: secretName: kubernetes-dashboard-certs - name: tmp-volume emptyDir: {} serviceAccountName: kubernetes-dashboard nodeSelector: "beta.kubernetes.io/os": linux # Comment the following tolerations if Dashboard must not be deployed on master #tolerations: # - key: node-role.kubernetes.io/master # effect: NoSchedule
serviceAccountName: kubernetes-dashboard nodeSelector: "beta.kubernetes.io/os": linux # Comment the following tolerations if Dashboard must not be deployed on master #tolerations: # - key: node-role.kubernetes.io/master # effect: NoSchedule volumes:
然后执行
kubectl apply -f recommended.yaml
会自动下载对应的镜像,如果镜像下载失败,可以去其他地方下载,然后打tag的方式,来安装
执行
kubectl get pods -n kubernetes-dashboard
下面的状态为Running表示安装成功了。
NAME READY STATUS RESTARTS AGE dashboard-metrics-scraper-745bd6bb57-gf4vn 1/1 Running 0 15m kubernetes-dashboard-7c8ff6ddc5-v8fck 1/1 Running 1 4h3m
二、创建账号
官方地址:https://github.com/kubernetes/dashboard/blob/master/docs/user/access-control/creating-sample-user.md
创建dashboard-adminuser.yaml,内容如下:
apiVersion: v1 kind: ServiceAccount metadata: name: admin-user namespace: kubernetes-dashboard
创建dashboard-adminuser-role-binding.yaml,内容如下:
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
然后分别执行:
kubectl apply -f dashboard-adminuser.yaml
kubectl apply -f dashboard-adminuser-role-binding.yaml
三、访问
创建token
kubectl -n kubernetes-dashboard describe secret $(kubectl -n kubernetes-dashboard get secret | grep admin-user | awk '{print $1}')
结果如下:
Name: admin-user-token-v57nw Namespace: kubernetes-dashboard Labels: <none> Annotations: kubernetes.io/service-account.name: admin-user kubernetes.io/service-account.uid: 0303243c-4040-4a58-8a47-849ee9ba79c1 Type: kubernetes.io/service-account-token Data ==== ca.crt: 1066 bytes namespace: 20 bytes token: eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.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.Z2JrQlitASVwWbc-s6deLRFVk5DWD3P_vjUFXsqVSY10pbjFLG4njoZwh8p3tLxnX_VBsr7_6bwxhWSYChp9hwxznemD5x5HLtjb16kI9Z7yFWLtohzkTwuFbqmQaMoget_nYcQBUC5fDmBHRfFvNKePh_vSSb2h_aYXa8GV5AcfPQpY7r461itme1EXHQJqv-SN-zUnguDguCTjD80pFZ_CmnSE1z9QdMHPB8hoB4V68gtswR1VLa6mSYdgPwCHauuOobojALSaMc3RH7MmFUumAgguhqAkX3Omqd3rJbYOMRuMjhANqd08piDC3aIabINX6gP5-Tuuw2svnV6NYQ
由于证书问题,我们使用代理的方式来访问
在主节点执行:
kubectl proxy --address='0.0.0.0'
结果如下:
Starting to serve on [::]:8001
由于在虚拟机中,浏览器没法直接访问,添加端口映射:
选择token,输入上面生成的token进行访问