kubernetes之安裝集群圖形化界面Dadhboard

目錄

• 安裝集群圖形化界面(Dashboard )
• 1、安裝圖形化界面
• 2、部署nginx服務

安裝集群圖形化界面(Dashboard )

Dashboard 是 基 於 網 頁 的 Kubernetes 用 戶 界 面 。 您 可 以 使 用 Dashboard 將 容 器 應 用 部 署 到Kubernetes 集群中，也可以對容器應用排錯，還能管理集群本身及其附屬資源。您可以使用 Dashboard 獲取運行在集群中的應用的概覽信息，也可以創建或者修改 Kubernetes 資源（如Deployment，Job，DaemonSet等等）。

1、安裝圖形化界面

可以對 Deployment 實現彈性伸縮、發起滾動升級、重啟 Pod 或者使用向導創建新的應用。

# 1、下載資源清單並生成
方式一：giitubx下載
[root@k8s-m-01 ~]#  wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.4/aio/deploy/recommended.yaml

方式二：自己網站下載並生成
[root@k8s-m-01 ~]#  wget  http://www.mmin.xyz:81/package/k8s/recommended.yaml
[root@k8s-m-01 ~]# kubectl apply -f recommended.yaml 

方式三：一步生成並安裝
[root@k8s-m-01 ~]# kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.3.1/aio/deploy/recommended.yaml  

# 2、查看端口
[root@k8s-m-01 ~]# kubectl get svc -n kubernetes-dashboard
NAME                        TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)    AGE
dashboard-metrics-scraper   ClusterIP   10.109.218.188   <none>        8000/TCP   20s
kubernetes-dashboard        ClusterIP   10.97.27.199     <none>        443/TCP    20s

# 3、開一個端口，用於訪問
[root@k8s-m-01 ~]# kubectl edit svc -n kubernetes-dashboard kubernetes-dashboard
type: ClusterIP   =>  type: NodePort  #修改成NodePort

# 4、重新查看端口
[root@k8s-m-01 ~]# kubectl get svc -n kubernetes-dashboard
NAME                        TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)         AGE
dashboard-metrics-scraper   ClusterIP   10.96.44.119   <none>        8000/TCP        12m
kubernetes-dashboard        NodePort    10.96.42.127   <none>        443:40927/TCP   12m

# 5、創建token配置文件
[root@k8s-m-01 ~]# vim token.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
  name: admin-user
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: admin-user
  annotations:
    rbac.authorization.kubernetes.io/autoupdate: "true"
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: admin-user
  namespace: kube-system

# 6、部署token到集群
[root@k8s-m-01 ~]# kubectl apply -f token.yaml 
serviceaccount/admin-user created
clusterrolebinding.rbac.authorization.k8s.io/admin-user created

# 7、獲取token
[root@k8s-m-01 ~]#  kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}') | grep token: | awk '{print $2}'
eyJhbGciOiJSUzI1NiIsImtpZCI6Ik1NeTJxSDZmaFc1a00zWVRXTHdQSlZlQnNjWUdQMW1zMjg5OTBZQ1JxNVEifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLWpxMm56Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiIyN2Q4MjIzYi1jYmY1LTQ5ZTUtYjAxMS1hZTAzMzM2MzVhYzQiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.Q4gC_Kr_Ltl_zG0xkhSri7FQrXxdA5Zjb4ELd7-bVbc_9kAe292w0VM_fVJky5FtldsY0XOp6zbiDVCPkmJi9NXT-P09WvPc9g-ISbbQB_QRIWrEWF544TmRSTZJW5rvafhbfONtqZ_3vWtMkCiDsf7EAwDWLLqA5T46bAn-fncehiV0pf0x_X16t72Qqa-aizHBrVcMsXQU0wnYC7jt373pnhnFHYdcJXx_LgHaC1LgCzx5BfkuphiYOaj_dVB6tAlRkQo3QkFP9GIBW3LcVfhOQBmMQl8KeHvBW4QC67PQRv55IUaUDJ_lRC2QKbeJzaUto-ER4YxFwr4tncBwZQ

# 8、驗證集群是否成功
[root@k8s-m-01 kubernetes]# kubectl run test01 -it --rm --image=busybox:1.28.3
If you don't see a command prompt, try pressing enter.
/ # nslookup kubernetes
Address 1: 10.96.0.2 kube-dns.kube-system.svc.cluster.local

Name:      kubernetes
Address 1: 10.96.0.1 kubernetes.default.svc.cluster.local
/ 
# 9、通過token訪問
https://192.168.15.51：32464  # 第4步查看端口

2、部署nginx服務

# 1、部署服務
[root@k8s-m-01 ~]# kubectl create deployment nginx --image=nginx
deployment.apps/nginx created
[root@k8s-m-01 ~]# kubectl expose deployment nginx --port=80 --type=NodePort
service/nginx exposed

# 2、查看部署的服務
[root@k8s-m-01 ~]# kubectl get svc
NAME         TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
kubernetes   ClusterIP   10.96.0.1      <none>        443/TCP        2d21h
nginx        NodePort    10.109.78.82   <none>        80:31463/TCP   5s

# 3、使用token登錄
[root@k8s-m-01 ~]# kubectl -n kube-system describe secret $(kubectl -n kube-system get secret | grep admin-user | awk '{print $1}') | grep token: | awk '{print $2}'
eyJhbGciOiJSUzI1NiIsImtpZCI6IjFGREpGUDZnbmkyeUJVSmplMm9TUEdVRmdKMGwxOWpFWEo0eE4wU1dmTzgifQ.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJrdWJlLXN5c3RlbSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VjcmV0Lm5hbWUiOiJhZG1pbi11c2VyLXRva2VuLWJ4cXRzIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZXJ2aWNlLWFjY291bnQubmFtZSI6ImFkbWluLXVzZXIiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlcnZpY2UtYWNjb3VudC51aWQiOiJlNTMxMjc0Mi1mZTlkLTRjMWQtOTI4YS04MGM4MWQwZjMyNGQiLCJzdWIiOiJzeXN0ZW06c2VydmljZWFjY291bnQ6a3ViZS1zeXN0ZW06YWRtaW4tdXNlciJ9.Cq9Z1pe4GErpTfHIe80tNo-M1hGLrn8T5tQzXCUosdwX55Tzu_ySAB8roHAXmWqOP4343w5ZQRJc6moH3gZ2tpDCDlssXGSEafX3N4UodBphr9XgsQvb_Ev1uhr5pVJmomwE3JRzGORt28SHdlm1PlAeTo0Bg9M9fNYXHzA8YGyCNN-fb--3wEb_gVqP1Go2HsReYHUZsmvxxxEuXXnDGK_U6mPOT8_hw-zEx-svGYoh5l4LKILG42FqUKFJo2qwj7hGl2RrPYELonx4OtL0vmbLyyxExC76g9d7sdXdzHLx7lZXXsgEBbgG54HC11SAHd0I7OL6PQfUFjQEDOzvXQ

# 4、查看kubernetes部署的服務
[root@k8s-m-01 ~]# kubectl get svc
NAME         TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
kubernetes   ClusterIP   10.96.0.1      <none>        443/TCP        2d21h
nginx        NodePort    10.109.78.82   <none>        80:31463/TCP   4m19s  # nginx服務

[root@k8s-m-01 ~]# kubectl get svc -n kubernetes-dashboard 
NAME                        TYPE        CLUSTER-IP    EXTERNAL-IP   PORT(S)         AGE
dashboard-metrics-scraper   ClusterIP   10.96.46.62   <none>        8000/TCP        11h
kubernetes-dashboard        NodePort    10.103.2.97   <none>        443:30327/TCP   11h  #網絡插件