Kubernetes V1.16.2部署Dashboard V2.0(beta5)

在Master上部署Dashboard

集群安裝部署請看安裝Kubernetes V1.16.2

kubectl get pods -A  -o wide

下載並修改Dashboard安裝腳本（在Master上執行）

參照官網安裝說明在master上執行：

wget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0-beta5/aio/deploy/recommended.yaml

修改recommended.yaml文件內容(vi recommended.yaml)：

---
#增加直接訪問端口
kind: Service
apiVersion: v1
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: kubernetes-dashboard
  namespace: kubernetes-dashboard
spec:
  type: NodePort #增加
  ports:
    - port: 443
      targetPort: 8443
      nodePort: 30008 #增加
  selector:
    k8s-app: kubernetes-dashboard

---
#因為自動生成的證書很多瀏覽器無法使用，所以我們自己創建，注釋掉kubernetes-dashboard-certs對象聲明
#apiVersion: v1
#kind: Secret
#metadata:
#  labels:
#    k8s-app: kubernetes-dashboard
#  name: kubernetes-dashboard-certs
#  namespace: kubernetes-dashboard
#type: Opaque

---

創建證書

mkdir dashboard-certs

cd dashboard-certs/

#創建命名空間
kubectl create namespace kubernetes-dashboard

# 創建key文件
openssl genrsa -out dashboard.key 2048

#證書請求
openssl req -days 36000 -new -out dashboard.csr -key dashboard.key -subj '/CN=dashboard-cert'

#自簽證書
openssl x509 -req -in dashboard.csr -signkey dashboard.key -out dashboard.crt

#創建kubernetes-dashboard-certs對象
kubectl create secret generic kubernetes-dashboard-certs --from-file=dashboard.key --from-file=dashboard.crt -n kubernetes-dashboard

安裝Dashboard

#安裝
kubectl create -f  ~/recommended.yaml

#檢查結果
kubectl get pods -A  -o wide

kubectl get service -n kubernetes-dashboard  -o wide

創建dashboard管理員

創建賬號：

vi dashboard-admin.yaml

apiVersion: v1
kind: ServiceAccount
metadata:
  labels:
    k8s-app: kubernetes-dashboard
  name: dashboard-admin
  namespace: kubernetes-dashboard

#保存退出后執行
kubectl create -f dashboard-admin.yaml

為用戶分配權限：

vi dashboard-admin-bind-cluster-role.yaml

apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: dashboard-admin-bind-cluster-role
  labels:
    k8s-app: kubernetes-dashboard
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: dashboard-admin
  namespace: kubernetes-dashboard

#保存退出后執行
kubectl create -f dashboard-admin-bind-cluster-role.yaml

查看並復制用戶Token：

kubectl -n kubernetes-dashboard describe secret $(kubectl -n kubernetes-dashboard get secret | grep dashboard-admin | awk '{print $1}')

訪問：https://192.168.0.7:30008，谷歌瀏覽器不行，但其他瀏覽器可以，比如Safari，選擇Token登錄，輸入剛才復制的密鑰：

登錄成功后：

登錄成功后命名空間選擇kube-system,並查看Pods:

因為沒有安裝metrics-server所以Pods的CPU、內存情況是看不到的。

安裝metrics-server

Ps：heapster已經被metrics-server取代

在Node1上下載鏡像文件：

docker pull bluersw/metrics-server-amd64:v0.3.6
docker tag bluersw/metrics-server-amd64:v0.3.6 k8s.gcr.io/metrics-server-amd64:v0.3.6  

在Master上執行安裝：
在Kubernetes Metrics Server下載K8S對象聲明文件：1.8+

cd ~

mkdir metrics-server

cd metrics-server

wget https://raw.githubusercontent.com/kubernetes-incubator/metrics-server/master/deploy/1.8%2B/aggregated-metrics-reader.yaml

wget https://raw.githubusercontent.com/kubernetes-incubator/metrics-server/master/deploy/1.8%2B/auth-delegator.yaml

wget https://raw.githubusercontent.com/kubernetes-incubator/metrics-server/master/deploy/1.8%2B/auth-reader.yaml

wget https://raw.githubusercontent.com/kubernetes-incubator/metrics-server/master/deploy/1.8%2B/metrics-apiservice.yaml

wget https://raw.githubusercontent.com/kubernetes-incubator/metrics-server/master/deploy/1.8%2B/metrics-server-deployment.yaml

wget https://raw.githubusercontent.com/kubernetes-incubator/metrics-server/master/deploy/1.8%2B/metrics-server-service.yaml

wget https://raw.githubusercontent.com/kubernetes-incubator/metrics-server/master/deploy/1.8%2B/resource-reader.yaml

修改安裝腳本：

vi metrics-server-deployment.yaml

spec:
  selector:
    matchLabels:
      k8s-app: metrics-server
  template:
    metadata:
      name: metrics-server
      labels:
        k8s-app: metrics-server
    spec:
      serviceAccountName: metrics-server
      volumes:
      # mount in tmp so we can safely use from-scratch images and/or read-only containers
      - name: tmp-dir
        emptyDir: {}
      containers:
      - name: metrics-server
        image: k8s.gcr.io/metrics-server-amd64:v0.3.6
        imagePullPolicy: IfNotPresent #修改
        command: #增加
        - /metrics-server
        - --kubelet-preferred-address-types=InternalIP
        - --kubelet-insecure-tls
        volumeMounts:
        - name: tmp-dir
          mountPath: /tmp

執行安裝腳本並產看結果：

#安裝
kubectl create -f ~/metrics-server

#1-2分鍾后查看結果
kubectl top nodes

再回到dashboard界面可以看到CPU和內存使用情況了：

源碼

Github倉庫:https://github.com/sunweisheng/Kubernetes