5.kubernetes的GUI資源管理插件-儀表盤

目錄

• 1.准備dashboard鏡像
• 2.創建資源配置清單
• 3.應用資源配置清單
• 4.查看創建的資源
• 5.解析域名
• 6.瀏覽器訪問
• 7.令牌命令行獲取方式

1.准備dashboard鏡像

[root@hdss7-200 harbor]# docker pull k8scn/kubernetes-dashboard-amd64:v1.8.3
[root@hdss7-200 harbor]# docker images|grep dashboard
[root@hdss7-200 harbor]# docker tag fcac9aa03fd6  harbor.od.com/public/dashboard:v1.8.3
[root@hdss7-200 harbor]# docker push harbor.od.com/public/dashboard:v1.8.3

2.創建資源配置清單

在hdss7-200.host.com上

[root@hdss7-200 harbor]# mkdir -p /data/k8s-yaml/dashboard && cd /data/k8s-yaml/dashboard

rbac.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
    addonmanager.kubernetes.io/mode: Reconcile
  name: kubernetes-dashboard-admin
  namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard-admin
  namespace: kube-system
  labels:
    k8s-app: kubernetes-dashboard
    addonmanager.kubernetes.io/mode: Reconcile
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: kubernetes-dashboard-admin
  namespace: kube-system

dp.yaml

  apiVersion: apps/v1
kind: Deployment
metadata:
  name: kubernetes-dashboard
  namespace: kube-system
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  selector:
    matchLabels:
      k8s-app: kubernetes-dashboard
  template:
    metadata:
      labels:
        k8s-app: kubernetes-dashboard
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
      priorityClassName: system-cluster-critical
      containers:
      - name: kubernetes-dashboard
        image: harbor.od.com/public/dashboard:v1.8.3
        resources:
          limits:
            cpu: 100m
            memory: 300Mi
          requests:
            cpu: 50m
            memory: 100Mi
        ports:
        - containerPort: 8443
          protocol: TCP
        args:
          # PLATFORM-SPECIFIC ARGS HERE
          - --auto-generate-certificates
        volumeMounts:
        - name: tmp-volume
          mountPath: /tmp
        livenessProbe:
          httpGet:
            scheme: HTTPS
            path: /
            port: 8443
          initialDelaySeconds: 30
          timeoutSeconds: 30
      volumes:
      - name: tmp-volume
        emptyDir: {}
      serviceAccountName: kubernetes-dashboard-admin
      tolerations:
      - key: "CriticalAddonsOnly"
        operator: "Exists"

svc.yaml

   apiVersion: v1
kind: Service
metadata:
  name: kubernetes-dashboard
  namespace: kube-system
  labels:
    k8s-app: kubernetes-dashboard
    kubernetes.io/cluster-service: "true"
    addonmanager.kubernetes.io/mode: Reconcile
spec:
  selector:
    k8s-app: kubernetes-dashboard
  ports:
  - port: 443
    targetPort: 8443

ingress.yaml

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: kubernetes-dashboard
  namespace: kube-system
  annotations:
    kubernetes.io/ingress.class: traefik
spec:
  rules:
  - host: dashboard.od.com
    http:
      paths:
      - backend:
          serviceName: kubernetes-dashboard
          servicePort: 443 

3.應用資源配置清單

[root@hdss7-21 containers]# kubectl apply -f http://k8s-yaml.od.com/dashboard/rbac.yaml
[root@hdss7-21 containers]# kubectl apply -f http://k8s-yaml.od.com/dashboard/dp.yaml
[root@hdss7-21 containers]# kubectl apply -f http://k8s-yaml.od.com/dashboard/svc.yaml
[root@hdss7-21 containers]# kubectl apply -f http://k8s-yaml.od.com/dashboard/ingress.yaml

4.查看創建的資源

[root@hdss7-21 containers]# kubectl get pods -n kube-system
[root@hdss7-21 containers]# kubectl get svc -n kube-system
[root@hdss7-21 containers]# kubectl get ingress -n kube-system

5.解析域名

[root@hdss7-11 conf.d]# vi /var/named/od.com.zone
$ORIGIN od.com.
$TTL 600        ; 10 minutes
@               IN SOA  dns.od.com. dnsadmin.od.com. (
                                2020042602 ; serial            //前滾一個序列號
                                10800      ; refresh (3 hours)
                                900        ; retry (15 minutes)
                                604800     ; expire (1 week)
                                86400      ; minimum (1 day)
                                )
                                NS   dns.od.com.
$TTL 60 ; 1 minute
dns                A    10.4.7.11
harbor             A    10.4.7.200
k8s-yaml           A    10.4.7.200
traefik            A    10.4.7.10
dashboard          A    10.4.7.10

[root@hdss7-11 conf.d]# systemctl restart named

6.瀏覽器訪問

http://dashboard.od.com/

7.令牌命令行獲取方式

 kubectl get secret -n kube-system
 kubectl describe secret kubernetes-dashboard-admin-token-xxxxx -n kube-system