k8s 优秀的web管理界面

2024-07-17 15:46| 来源: 网络整理| 查看: 265

Web 界面 (Dashboard)

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。

Dashboard 同时展示了 Kubernetes 集群中的资源状态信息和所有报错信息。

部署 Dashboard UI

查看当前集群node

代码语言：javascript复制[root@master01 k8s-dashboard]# kubectl get node NAME STATUS ROLES AGE VERSION 172.19.64.35 Ready node 2d16h v1.18.0 172.19.64.36 Ready node 2d16h v1.18.0 172.19.64.37 Ready node 2d16h v1.18.0 172.19.64.38 Ready node 2d16h v1.18.0 172.19.64.39 Ready node 2d16h v1.18.0 172.19.64.40 Ready,SchedulingDisabled master 2d16h v1.18.0 172.19.64.41 Ready,SchedulingDisabled master 2d16h v1.18.0 [root@master01 k8s-dashboard]#

因为我的集群是1.18.10版本，所以dashboard选择2.0.3版。

代码语言：javascript复制wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.4/aio/deploy/recommended.yaml修改dashboard的yaml文件

修改service部分，默认service是ClusterIP类型，这里改称NodePort类型，是集群外部能否访问

代码语言：javascript复制kind: Service apiVersion: v1 metadata: labels: k8s-app: kubernetes-dashboard name: kubernetes-dashboard namespace: kubernetes-dashboard spec: type: NodePort ports: - port: 443 targetPort: 8443 nodePort: 30012 selector: k8s-app: kubernetes-dashboard

执行yaml文件

代码语言：javascript复制[root@master01 k8s-dashboard]# kubectl apply -f recommended.yaml namespace/kubernetes-dashboard created serviceaccount/kubernetes-dashboard created service/kubernetes-dashboard created secret/kubernetes-dashboard-certs created secret/kubernetes-dashboard-csrf created secret/kubernetes-dashboard-key-holder created configmap/kubernetes-dashboard-settings created role.rbac.authorization.k8s.io/kubernetes-dashboard created clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created deployment.apps/kubernetes-dashboard created service/dashboard-metrics-scraper created deployment.apps/dashboard-metrics-scraper created [root@master01 k8s-dashboard]#

查看服务状态

代码语言：javascript复制[root@master01 k8s-dashboard]# kubectl get all -n kubernetes-dashboard NAME READY STATUS RESTARTS AGE pod/dashboard-metrics-scraper-6b4884c9d5-tdw2m 1/1 Running 0 39s pod/kubernetes-dashboard-7d8574ffd9-rbfwm 1/1 Running 0 39s NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE service/dashboard-metrics-scraper ClusterIP 10.0.0.110 8000/TCP 39s service/kubernetes-dashboard NodePort 10.0.0.17 443:30012/TCP 39s NAME READY UP-TO-DATE AVAILABLE AGE deployment.apps/dashboard-metrics-scraper 1/1 1 1 39s deployment.apps/kubernetes-dashboard 1/1 1 1 39s NAME DESIRED CURRENT READY AGE replicaset.apps/dashboard-metrics-scraper-6b4884c9d5 1 1 1 39s replicaset.apps/kubernetes-dashboard-7d8574ffd9 1 1 1 39s [root@master01 k8s-dashboard]#

可以看到pod 服务已经是running状态

访问集群IP:30012端口可以访问web管理界面

点击高级，继续访问。

创建登录用户信息

代码语言：javascript复制apiVersion: v1 kind: ServiceAccount metadata: name: admin namespace: kubernetes-dashboard --- apiVersion: rbac.authorization.k8s.io/v1 kind: ClusterRoleBinding metadata: name: admin roleRef: apiGroup: rbac.authorization.k8s.io kind: ClusterRole name: cluster-admin subjects: - kind: ServiceAccount name: admin namespace: kubernetes-dashboard

执行到集群

代码语言：javascript复制kubectl apply -f admin.yaml

查看kubernetes-dashboard下面的secret

代码语言：javascript复制[root@master01 k8s-dashboard]# kubectl get secret -n kubernetes-dashboard NAME TYPE DATA AGE default-token-7c4nd kubernetes.io/service-account-token 3 8m28s kubernetes-dashboard-certs Opaque 0 8m28s kubernetes-dashboard-csrf Opaque 1 8m28s kubernetes-dashboard-key-holder Opaque 2 8m28s kubernetes-dashboard-token-wdtbk kubernetes.io/service-account-token 3 8m28s

查看登录token

代码语言：javascript复制[root@master01 k8s-dashboard]# kubectl describe secret kubernetes-dashboard-token-wdtbk -n kubernetes-dashboard Name: kubernetes-dashboard-token-wdtbk Namespace: kubernetes-dashboard Labels: Annotations: kubernetes.io/service-account.name: kubernetes-dashboard kubernetes.io/service-account.uid: 1f51d545-91a8-4b27-9f22-e15791dff4eb Type: kubernetes.io/service-account-token Data ==== ca.crt: 1363 bytes namespace: 20 bytes token: eyJhbGciOiJSUzI1NiIsImtpZCI6IjVkdnktMnVLRTU2UGN2SlRBWXEyM0hrSXRZdS0ya20yNkNGeGloWENwTzQifQ.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.GnhMhTC76Ty4YMnkE8L5L9pQgn2DTa3bJQSTkLOV8sCo9RlGjnGPgCcyrXVMfMQb4O0Qc7TAhcwxqmICI_uHXzLX6JNc0Vvmw6_lzbkUlxRg_qdX8Zlol7wYlxb01cex4SL4JCyxbPbZ1ChXP75fsKl3nxIGWntdie8fpH_DuHH4XjosOTnkx-GBhYoarXvcRtu_kzwKJw2dCULNhOycyFsC9ufQV1tcF89yWCw2XcNzRqGWPUDbhEJ4NtsHA_UbZ6FGTyHQ7RfLWnIDN63u-uH8v2y-oX19gd0IrK6rDyYchpx4Wp4uqdmcHEgHH0eQN-ImDMyqVj2xHSkzYcMHMA [root@master01 k8s-dashboard]#

登陆dashboard

查看集群pod信息

查看集群service

查看集群node节点信息

查看集群Deployments

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