图形化界面概述

dashboard是商业智能仪表盘（business intelligence dashboard，BI dashboard）的简称，它是一般商业智
能都拥有的实现数据可视化的模块，是向企业展示度量信息和关键业务指标（KPI）现状的数据虚拟化工具 .
dashboard在一个简单屏幕上联合并整理数字、公制和绩效记分卡。它们调整适应特定角色并展示为单一视角或部门指定的度量。
dashboard关键的特征是从多种数据源获取实时数据，并且是定制化的交互式界面。
dashboard以丰富的，可交互的可视化界面为数据提供更好的使用体验.

K8s也有相对直观的图形话界面，官网已经把五个yaml文件合成了一个，但是这里我们还是使用旧款的五个文件进行的模拟实验

来吧！展示！！

根据上一次昨晚的多节点K8s接着部署

在master上进行操作

上传上面的全部文件

[root@localhost ~]# cd k8s/
[root@localhost k8s]# mkdir dashboard
[root@localhost k8s]# cd dashboard/
[root@localhost dashboard]# kubectl get nodes
NAME       STATUS   ROLES    AGE   VERSION
20.0.0.4   Ready    <none>   8d    v1.12.3
20.0.0.5   Ready    <none>   8d    v1.12.3
[root@localhost dashboard]# rz -E
rz waiting to receive.
[root@localhost dashboard]# ls
dashboard-configmap.yaml   dashboard-rbac.yaml    dashboard-service.yaml
dashboard-controller.yaml  dashboard-secret.yaml  k8s-admin.yaml

根据我提供的顺序，安装yaml文件

[root@localhost 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@localhost dashboard]# kubectl create -f dashboard-secret.yaml 
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-key-holder created
[root@localhost dashboard]# kubectl create -f dashboard-configmap.yaml 
configmap/kubernetes-dashboard-settings created
[root@localhost dashboard]# kubectl create -f dashboard-controller.yaml 
serviceaccount/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
[root@localhost dashboard]# kubectl create -f dashboard-service.yaml 
service/kubernetes-dashboard created

查看命名空间

完成后查看创建在指定的kube-system命名空间下的pods

[root@localhost dashboard]# kubectl get pods,service -n kube-system
NAME                                        READY   STATUS              RESTARTS   AGE
pod/kubernetes-dashboard-65f974f565-wtvtr   0/1     ContainerCreating   0          100s
	##要等到创建成功才可以继续下一步，现在时创建中
NAME                           TYPE       CLUSTER-IP   EXTERNAL-IP   PORT(S)         AGE
service/kubernetes-dashboard   NodePort   10.0.0.238   <none>        443:30001/TCP   95s

状态成为running之后，查看pods在那个节点上

这边看到是在我 20.0.0.5的节点上，对外端口暴露为30001

[root@localhost dashboard]# kubectl get pods,service -n kube-system -o wi
de
NAME                                        READY   STATUS    RESTARTS   AGE     IP            NODE       NOMINATED NODE
pod/kubernetes-dashboard-65f974f565-wtvtr   1/1     Running   0          4m15s   172.17.54.2   20.0.0.5   <none>

NAME                           TYPE       CLUSTER-IP   EXTERNAL-IP   PORT(S)         AGE     SELECTOR
service/kubernetes-dashboard   NodePort   10.0.0.238   <none>        443:30001/TCP   4m10s   k8s-app=kubernetes-dashboard

打开页面查看

推荐使用火狐浏览器，可以跳过验证

生成登录令牌

[root@localhost dashboard]# kubectl create -f k8s-admin.yaml 
serviceaccount/dashboard-admin created
clusterrolebinding.rbac.authorization.k8s.io/dashboard-admin created
[root@localhost dashboard]# kubectl get secret -n kube-system
NAME                               TYPE                                  DATA   AGE
dashboard-admin-token-tl2bq        kubernetes.io/service-account-token   3      45s		##复制这个名字
default-token-6rblg                kubernetes.io/service-account-token   3      8d
kubernetes-dashboard-certs         Opaque                                0      15m
kubernetes-dashboard-key-holder    Opaque                                2      15m
kubernetes-dashboard-token-jvqfp   kubernetes.io/service-account-token   3      15m

查看证书详细信息
[root@localhost dashboard]# kubectl describe secret dashboard-admin-token-tl2bq -n kube-system
Name:         dashboard-admin-token-tl2bq
Namespace:    kube-system
Labels:       <none>
Annotations:  kubernetes.io/service-account.name: dashboard-admin
              kubernetes.io/service-account.uid: 97478dda-0957-11eb-ad59-000c29aff78f

Type:  kubernetes.io/service-account-token

Data
====
ca.crt:     1359 bytes
namespace:  11 bytes
token:      eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.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.KLzQdBQOb1ETbdpLTN9sbDOALknhOTurzBcB8FlbpmjC2Ef1H3Wbic9mOlqxFyOUwly6GT-YKNElGAqAAxiWpuh8Lbsn1pobBPCNdYQYpgCuTBxM4Al7BIG4uDOw1WZNXeEBtxze0k-LBxMnWcwB7WxNpETicoEewqN8KLZOQSM9LUMxM6Cy-tDi7NhTPBx57BpiEMrXA5IttBhXJmzEmmCUKIqgVxK3r5kcOff5FOLSslYVeML1K3dsijr-sW0pExKITSoqhLja2CWt_g_AP9jzt2pq4rgI51w7MDApceXsA1Fm6MKq6aWyDgESQYCmfuWBGE8ED4KFWRGJoodj0w

登录

实验结束

成功看到图形界面

微软Edge或者谷歌浏览器登录方法

某些浏览器打开会报不安全，并且也不允许接受风险，像是下图这样，那我们就要手动添加证书

[root@localhost dashboard]# vim dashboard-cert.sh
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

[root@localhost dashboard]# vim dashboard-controller.yaml 	##这里声明两个证书文件
        args:
          # PLATFORM-SPECIFIC ARGS HERE
          - --auto-generate-certificates
          - --tls-key-file=dashboard-key.pem	##这行和下面的
          - --tls-cert-file=dashboard.pem

[root@localhost dashboard]# bash dashboard-cert.sh /root/k8s/k8s-cert/
[root@localhost dashboard]# kubectl apply -f dashboard-controller.yaml 
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

再次查看就OK了