k8s部署---UI界面部署（六）

kubernetes平臺中UI頁面的作用

• k8s的webUI管理界面可以更好更直觀更便捷的讓我們去管理我們的k8s集羣。

實驗部署

實驗環境

• lb01：192.168.80.19 （負載均衡服務器）
• lb01：192.168.80.20 （負載均衡服務器）
• Master01:192.168.80.12
• Master01:192.168.80.11
• Node01:192.168.80.13
• Node02:192.168.80.14
• 本篇文章接着上篇多節點部署與負載均衡部署繼續部署，實驗環境不變。

web頁面部署

• 部署web頁面需要我們到GitHub網站下載yaml文件，我這邊已經下載好了，大家可以直接下載用即可
• 官方文件下載 提取碼：tj0d

• GitHub下載地址
  

• 在master01服務器操作

  [root@master01 ~]# mkdir abc        //創建掛載目錄
  [root@master01 ~]# mount.cifs //192.168.80.2/Shares/K8S/k8s03 /root/abc/  //將準備好的yaml文件掛載到abc目錄
  Password for root@//192.168.80.2/Shares/K8S/k8s03:
  [root@master01 ~]# cd abc/
  [root@master01 abc]# ls
  dashboard-configmap.yaml   dashboard-rbac.yaml    dashboard-service.yaml
  dashboard-controller.yaml  dashboard-secret.yaml  k8s-admin.yaml
  [root@master01 abc]# cd /root/k8s/
  [root@master01 k8s]# mkdir dashboard       //創建工作目錄
  [root@master01 dashboard]# cp /root/abc/*.yaml /root/k8s/dashboard/    //將文件拷貝到工作目錄
  [root@master01 dashboard]# ls
  dashboard-configmap.yaml   dashboard-rbac.yaml    dashboard-service.yaml
  dashboard-controller.yaml  dashboard-secret.yaml  k8s-admin.yaml
  [root@master01 dashboard]# kubectl create -f dashboard-rbac.yaml
  role.rbac.authorization.k8s.io/kubernetes-dashboard-minimal created
  rolebinding.rbac.authorization.k8s.io/kubernetes-dashboard-minimal created
  [root@master01 dashboard]# kubectl create -f dashboard-secret.yaml
  secret/kubernetes-dashboard-certs created
  secret/kubernetes-dashboard-key-holder created
  [root@master01 dashboard]# kubectl create -f dashboard-configmap.yaml
  configmap/kubernetes-dashboard-settings created
  [root@master01 dashboard]# kubectl create -f dashboard-controller.yaml
  serviceaccount/kubernetes-dashboard created
  deployment.apps/kubernetes-dashboard created
  [root@master01 dashboard]# kubectl create -f dashboard-service.yaml
  service/kubernetes-dashboard created
  [root@master01 dashboard]# kubectl get pods -n kube-system    //完成後查看創建在指定的kube-system命名空間下
  NAME                                    READY   STATUS              RESTARTS   AGE
  kubernetes-dashboard-65f974f565-72cs2   0/1     ContainerCreating   0          3m42s
  [root@master01 dashboard]# kubectl get pods,svc -n kube-system  //查看如何訪問
  NAME                                        READY   STATUS    RESTARTS   AGE
  pod/kubernetes-dashboard-65f974f565-72cs2   1/1     Running   1          25m
  
  NAME                           TYPE       CLUSTER-IP   EXTERNAL-IP   PORT(S)         AGE
  service/kubernetes-dashboard   NodePort   10.0.0.89    <none>        443:30001/TCP   23m

• 在宿主機中直接訪問node節點IP地址即可
  • https://192.168.80.13:30001 //使用https訪問，注意訪問的端口
    
• 訪問頁面時就會報錯，出現無法訪問的問題，下面我們就來解決這個訪問問題

• 回到master01服務器操作

  [root@master01 dashboard]# vim dashboard-cert.sh    //創建證書文件
  cat > dashboard-csr.json <<EOF
  {
  "CN": "Dashboard",
  "hosts": [],
  "key": {
     "algo": "rsa",
     "size": 2048
  },
  "names": [
     {
         "C": "CN",
         "L": "BeiJing",
         "ST": "BeiJing"
     }
  ]
  }
  EOF
  
  K8S_CA=$1
  cfssl gencert -ca=$K8S_CA/ca.pem -ca-key=$K8S_CA/ca-key.pem -config=$K8S_CA/ca-config.json -profile=kubernetes dashboard-csr.json | cfssljson -bare dashboard
  kubectl delete secret kubernetes-dashboard-certs -n kube-system
  kubectl create secret generic kubernetes-dashboard-certs --from-file=./ -n kube-system
  :wq
  [root@master01 dashboard]# bash dashboard-cert.sh /root/k8s/k8s-cert/    //執行腳本
  2020/02/12 11:51:38 [INFO] generate received request
  2020/02/12 11:51:38 [INFO] received CSR
  2020/02/12 11:51:38 [INFO] generating key: rsa-2048
  2020/02/12 11:51:39 [INFO] encoded CSR
  2020/02/12 11:51:39 [INFO] signed certificate with serial number 681019580324880598304565567389099666263132072953
  2020/02/12 11:51:39 [WARNING] This certificate lacks a "hosts" field. This makes it unsuitable for
  websites. For more information see the Baseline Requirements for the Issuance and Management
  of Publicly-Trusted Certificates, v.1.1.6, from the CA/Browser Forum (https://cabforum.org);
  specifically, section 10.2.3 ("Information Requirements").
  secret "kubernetes-dashboard-certs" deleted
  secret/kubernetes-dashboard-certs created
  [root@master01 dashboard]# vim dashboard-controller.yaml     //編輯yaml文件
  ...
  protocol: TCP
      args:
        # PLATFORM-SPECIFIC ARGS HERE
        - --auto-generate-certificates
        - --tls-key-file=dashboard-key.pem
        - --tls-cert-file=dashboard.pem
      volumeMounts:
      - name: kubernetes-dashboard-certs
  ...
  :wq
  [root@master01 dashboard]# kubectl apply -f dashboard-controller.yaml    //重新部署應用
  Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
  serviceaccount/kubernetes-dashboard configured
  Warning: kubectl apply should be used on resource created by either kubectl create --save-config or kubectl apply
  deployment.apps/kubernetes-dashboard configured

• 重新部署應用後再次訪問網頁
  

• 回到master01節點服務器操作生成令牌

  [root@master01 dashboard]# kubectl create -f k8s-admin.yaml   //指定文件方式創建令牌
  serviceaccount/dashboard-admin created
  clusterrolebinding.rbac.authorization.k8s.io/dashboard-admin created
  [root@master01 dashboard]# kubectl get secret -n kube-system    //保存令牌
  NAME                               TYPE                                  DATA   AGE
  dashboard-admin-token-2slr4        kubernetes.io/service-account-token   3      44s
  default-token-g6klk                kubernetes.io/service-account-token   3      26h
  kubernetes-dashboard-certs         Opaque                                11     124m
  kubernetes-dashboard-key-holder    Opaque                                2      160m
  kubernetes-dashboard-token-42q89   kubernetes.io/service-account-token   3      159m
  [root@master01 dashboard]# kubectl describe secret dashboard-admin-token-2slr4 -n kube-system         //查看剛保存的dashboard-admin-token-2slr4令牌文件，
  Name:         dashboard-admin-token-2slr4
  Namespace:    kube-system
  Labels:       <none>
  Annotations:  kubernetes.io/service-account.name: dashboard-admin
            kubernetes.io/service-account.uid: 3f7a81ec-4d5c-11ea-8ed9-000c297d4201
  
  Type:  kubernetes.io/service-account-token
  
  Data
  ====
  ca.crt:     1359 bytes
  namespace:  11 bytes
  token:      eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.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.db1SgMq37OagIsRiPMgR-zWpneHpzTVGun3Di4VYdVY1XBmmD_DraAGElLal6fm7t5nMVwIqOI3SH2w_0B8iZbHYJUwowMjW6GSSg_W4SP0E4Dfec29MhyIX8NMRRIWqJKRsf9vTj5F5Drjs1PSBAYLOWPibNVp81KzyzvIdHVW_o8x7apYz_uU7GxvvYasEtY5xjJIbzs9BjHfWE2vEPDm04B6Gs9x_dHw89o2izYQwisKpaiqepWyMP6uHj6gZk9ksvzg7bz_t5NpEczJmoZNNjXhkjLyZ8k2Y_3Zl0N5T55i5SPXIae46wt-G-Q7ezuYWJjL5EP-wR7gEuE7IyA

• 複製令牌文件在瀏覽器中粘貼
  

  成功搭建webUI界面