kubernetes dashboard,kubernetesdashboard汉化版

• 学习K8s，整理记忆
• 博文内容涉及
• K8s面板工具dashboard和Kuboard.
• dashboard以及Kuboard部署Demo
• 部分地方使用了Ansible，只用了shell，copy模块
• 部分内容参考 dashboard K8s官方文档：https://Kubernetes.io/zh/docs/tasks/access-application-cluster/web-ui-dashboard/kuboard官网： http://press.demo.kuboard.cn/overview/share-coder.html

很多时候我们放弃，以为不过是一段感情，到了最后，才知道，原来那是一生。——匪我思存《佳期如梦》

无论是dashboard还是Kuboard，为了在页面上显示系统资源的使用情况，需要部署K8s核心指标监控工具Metrics Server,所以我们先来安装metric-server

集群版本

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl get nodes NAME STATUS ROLES AGE VERSION vms81.liruilongs.github.io Ready control-plane,master 68d v1.22.2 vms82.liruilongs.github.io Ready <none> 68d v1.22.2 vms83.liruilongs.github.io Ready <none> 68d v1.22.2 ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$ 安装 metric-server

相关镜像资源文件下载

curl -Ls https://api.github.com/repos/kubernetes-sigs/metrics-server/tarball/v0.3.6 -o metrics-server-v0.3.6.tar.gz

docker pull mirrorgooglecontainers/metrics-server-amd64:v0.3.6

两种方式任选其一，我们这里已经下载了镜像，所以直接导入，使用ansible所以机器执行

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$ansible all -m copy -a "src=./metrics-img.tar dest=/root/metrics-img.tar" ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$ansible all -m shell -a "docker load -i /root/metrics-img.tar" 192.168.26.83 | CHANGED | rc=0 >> Loaded image: k8s.gcr.io/metrics-server-amd64:v0.3.6 192.168.26.81 | CHANGED | rc=0 >> Loaded image: k8s.gcr.io/metrics-server-amd64:v0.3.6 192.168.26.82 | CHANGED | rc=0 >> Loaded image: k8s.gcr.io/metrics-server-amd64:v0.3.6 ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$

修改metrics-server-deployment.yaml，创建资源

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$mv kubernetes-sigs-metrics-server-d1f4f6f/ metrics ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$cd metrics/ ┌──[root@vms81.liruilongs.github.io]-[~/ansible/metrics] └─$ls cmd deploy hack OWNERS README.md version code-of-conduct.md Gopkg.lock LICENSE OWNERS_ALIASES SECURITY_CONTACTS CONTRIBUTING.md Gopkg.toml Makefile pkg vendor ┌──[root@vms81.liruilongs.github.io]-[~/ansible/metrics] └─$cd deploy/1.8 / ┌──[root@vms81.liruilongs.github.io]-[~/ansible/metrics/deploy/1.8 ] └─$ls aggregated-metrics-reader.yaml metrics-apiservice.yaml resource-reader.yaml auth-delegator.yaml metrics-server-deployment.yaml auth-reader.yaml metrics-server-service.yaml ┌──[root@vms81.liruilongs.github.io]-[~/ansible/metrics/deploy/1.8 ] └─$vim metrics-server-deployment.yaml

修改资源文件，获取镜像方式

31 - name: metrics-server 32 image: k8s.gcr.io/metrics-server-amd64:v0.3.6 33 #imagePullPolicy: Always 34 imagePullPolicy: IfNotPresent 35 command: 36 - /metrics-server 37 - --metric-resolution=30s 38 - --kubelet-insecure-tls 39 - --kubelet-preferred-address-types=InternalIP 40 volumeMounts:

部署 metrics-server

┌──[root@vms81.liruilongs.github.io]-[~/ansible/metrics/deploy/1.8 ] └─$kubectl apply -f .

确认是否成功安装kube-system空间

┌──[root@vms81.liruilongs.github.io]-[~/ansible/metrics/deploy/1.8 ] └─$kubectl get pods -n kube-system NAME READY STATUS RESTARTS AGE calico-kube-controllers-78d6f96c7b-79xx4 1/1 Running 2 3h15m calico-node-ntm7v 1/1 Running 1 12h calico-node-skzjp 1/1 Running 4 12h calico-node-v7pj5 1/1 Running 1 12h coredns-545d6fc579-9h2z4 1/1 Running 2 3h15m coredns-545d6fc579-xgn8x 1/1 Running 2 3h16m etcd-vms81.liruilongs.github.io 1/1 Running 1 13h kube-apiserver-vms81.liruilongs.github.io 1/1 Running 2 13h kube-controller-manager-vms81.liruilongs.github.io 1/1 Running 4 13h kube-proxy-rbhgf 1/1 Running 1 13h kube-proxy-vm2sf 1/1 Running 1 13h kube-proxy-zzbh9 1/1 Running 1 13h kube-scheduler-vms81.liruilongs.github.io 1/1 Running 5 13h metrics-server-bcfb98c76-gttkh 1/1 Running 0 70m

简单测试

┌──[root@vms81.liruilongs.github.io]-[~/ansible/metrics/deploy/1.8 ] └─$kubectl top nodes W1007 14:23:06.102605 102831 top_node.go:119] Using json format to get metrics. Next release will switch to protocol-buffers, switch early by passing --use-protocol-buffers flag NAME CPU(cores) CPU% MEMORY(bytes) MEMORY% vms81.liruilongs.github.io 555m 27% 2025Mi 52% vms82.liruilongs.github.io 204m 10% 595Mi 15% vms83.liruilongs.github.io 214m 10% 553Mi 14% ┌──[root@vms81.liruilongs.github.io]-[~/ansible/metrics/deploy/1.8 ] └─$ 二、dashboard安装简单介绍

kubernetes-dashboard是 Kubernetes的Web UI网页管理工具，可提供部署应用、资源对象管理、容器日志查询、系统监控等常用的集群管理功能。为了在页面上显示系统资源的使用情况，需要部署K8s核心指标监控工具Metrics Server

Github主页： https://github.com/kubernetes/dashboard

资源文件(需要科学上网)：https://raw.githubusercontent.com/kubernetes/dashboard/v2.5.0/aio/deploy/recommended.yaml

这里如果可以科学上网的小伙伴可以用这个，如果不行的话，用我的那个，yaml文件太大了，我放到了文末。

环境准备，工作节点push相关的镜像,这里因为有些镜像push不下来，所以替换为可以访问的镜像仓库来处理。

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$cat recommended.yaml | grep -i image #image: kubernetesui/dashboard:v2.0.0-beta8 image: registry.cn-hangzhou.aliyuncs.com/kube-iamges/dashboard:v2.0.0-beta8 #imagePullPolicy: Always imagePullPolicy: IfNotPresent #image: kubernetesui/metrics-scraper:v1.0.1 image: registry.cn-hangzhou.aliyuncs.com/kube-iamges/metrics-scraper:v1.0.1 imagePullPolicy: IfNotPresent ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$ansible node -m shell -a "docker pull registry.cn-hangzhou.aliyuncs.com/kube-iamges/dashboard:v2.0.0-beta8" ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$ansible node -m shell -a "docker pull registry.cn-hangzhou.aliyuncs.com/kube-iamges/metrics-scraper:v1.0.1"

安装 dashboard

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl apply -f recommended.yaml namespace/kubernetes-dashboard created serviceaccount/kubernetes-dashboard created service/kubernetes-dashboard created secret/kubernetes-dashboard-certs created secret/kubernetes-dashboard-csrf created secret/kubernetes-dashboard-key-holder created configmap/kubernetes-dashboard-settings created role.rbac.authorization.k8s.io/kubernetes-dashboard created clusterrole.rbac.authorization.k8s.io/kubernetes-dashboard created rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard created deployment.apps/kubernetes-dashboard created service/dashboard-metrics-scraper created deployment.apps/dashboard-metrics-scraper created ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$

安装完成，查看相关的资源是否准备好.

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl get pods -n kubernetes-dashboard NAME READY STATUS RESTARTS AGE dashboard-metrics-scraper-669c88c9d9-c6jc7 1/1 Running 0 119s kubernetes-dashboard-5d66bcd8fd-87hlx 1/1 Running 0 2m

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl get SVC -n kubernetes-dashboard NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE dashboard-metrics-scraper ClusterIP 10.103.114.121 <none> 8000/TCP 2m11s kubernetes-dashboard ClusterIP 10.98.100.249 <none> 443/TCP 2m12s

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl get sa -n kubernetes-dashboard NAME SECRETS AGE default 1 2m21s kubernetes-dashboard 1 2m21s

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl get deploy -n kubernetes-dashboard NAME READY UP-TO-DATE AVAILABLE AGE dashboard-metrics-scraper 1/1 1 1 2m50s kubernetes-dashboard 1/1 1 1 2m51s ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$

修改SVC类型为NodePort,允许机器外部提供访问能力

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl edit svc kubernetes-dashboard -n kubernetes-dashboard service/kubernetes-dashboard edited ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$

查看修改是否正确

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl get svc -n kubernetes-dashboard NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE dashboard-metrics-scraper ClusterIP 10.103.114.121 <none> 8000/TCP 6m33s kubernetes-dashboard NodePort 10.98.100.249 <none> 443:32329/TCP 6m34s ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$

这里切换了一下命名空间，不是必要操作

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl config set-context $(kubectl config current-context) --namespace=kubernetes-dashboard Context "kubernetes-admin@kubernetes" modified. ┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$

创建sa，为其绑定一个类似root的K8s角色，提供访问能力。更多可以参考：https://github.com/kubernetes/dashboard/blob/master/docs/user/access-control/creating-sample-user.md

资源文件

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$cat dashboard-adminuser.yaml apiVersion: v1 kind: ServiceAccount metadata: name: admin-user namespace: kubernetes-dashboard --- 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

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl apply -f dashboard-adminuser.yaml serviceaccount/admin-user created clusterrolebinding.rbac.authorization.k8s.io/admin-user unchanged

获取sa的token，通过token的方式登录部署好的dashboard

┌──[root@vms81.liruilongs.github.io]-[~/ansible] └─$kubectl -n kubernetes-dashboard get secret $(kubectl -n kubernetes-dashboard get sa/admin-user -o jsonpath="{.secrets[0].name}") -o go-template="{{.data.token | base64decode}}" eyJhbGciOiJSUzI1NiIsImtpZCI6ImF2MmJVZ3d6M21JRC1BZUwwaHlDdzZHSGNyaVJON1BkUHF6MlhPV2NfX00ifQ.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.epjeFx7jvYG6v0zf0RuMjpY7RisrzBxrNdYdfszCwXS2_AauHM9a6dLUSx1oLUimiUdbCZvX0tElC99u8f5YQS4xGL-8gNSIUpe3JvWjgTlYB-6I5BqRxKrckqkHrs0juzw0K2d4HdDwUe79AyS7pJwqrD4LTQKzAfOmpWbwzHbPI4WKJ7FKyYGcW76HOdTYTdXVb_Rr0ucdOIRQdEwbFceT9atiImqQhb1Kv9ByoFDxSx2YP6PXPo8zGMUwmXXtlimzv0IdghcPOrwe6gk96LoD3pV-Q2kGL3OPhnxVusfOJh-bdRznSGorvtXc_IGJh8gwhF1zluRmQ4tECCu1sw 访问测试