k8s部署—UI界面部署（六）

kubernetes平台中UI页面的作用

• k8s的webUI管理界面可以更好更直观更便捷的让我们去管理我们的k8s集群。

实验部署

实验环境

• lb01：192.168.80.19 （负载均衡服务器）
• lb01：192.168.80.20 （负载均衡服务器）
• 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节点部署与负载均衡部署继续部署，实验环境不变。

web页面部署

• 部署web页面需要我们到GitHub网站下载yaml文件，我这边已经下载好了，大家可以直接下载用即可
• 官方文件下载 提取码：tj0d

• GitHub下载地址
  

• 在master01服务器操作

  [root@master01 ~]# mkdir abc        //创建挂载目录
  [root@master01 ~]# mount.cifs //192.168.80.2/Shares/K8S/k8s03 /root/abc/  //将准备好的yaml文件挂载到abc目录
  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       //创建工作目录
  [root@master01 dashboard]# cp /root/abc/*.yaml /root/k8s/dashboard/    //将文件拷贝到工作目录
  [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    //完成后查看创建在指定的kube-system命名空间下
  NAME                                    READY   STATUS              RESTARTS   AGE
  kubernetes-dashboard-65f974f565-72cs2   0/1     ContainerCreating   0          3m42s
  [root@master01 dashboard]# kubectl get pods,svc -n kube-system  //查看如何访问
  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

• 在宿主机中直接访问node节点IP地址即可
  • https://192.168.80.13:30001 //使用https访问，注意访问的端口
    
• 访问页面时就会报错，出现无法访问的问题，下面我们就来解决这个访问问题

• 回到master01服务器操作

  [root@master01 dashboard]# vim dashboard-cert.sh    //创建证书文件
  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/    //执行脚本
  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     //编辑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    //重新部署应用
  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

• 重新部署应用后再次访问网页
  

• 回到master01节点服务器操作生成令牌

  [root@master01 dashboard]# kubectl create -f k8s-admin.yaml   //指定文件方式创建令牌
  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         //查看刚保存的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

• 复制令牌文件在浏览器中粘贴
  
  

  成功搭建webUI界面