K8S多master部署三：部署DashBoard-UI界面

前情提要

如下全部操做均在单master群集已完成部署的状况下进行。

全部服务器均保证防火墙常闭，核心功能selinux关闭。

服务器角色分配

角色	地址	安装组件
master	192.168.142.220	kube-apiserver kube-controller-manager kube-scheduler etcd
master02	192.168.142.120	kube-apiserver kube-controller-manager kube-scheduler
node1	192.168.142.136	kubelet kube-proxy docker flannel etcd
node2	192.168.142.132	kubelet kube-proxy docker flannel etcd
nginx1	192.168.142.130	nginx keepalived
nginx2	192.168.142.140	nginx keepalived
VIP	192.168.142.20	虚拟地址

---

Master端创建DashBoard

创建dashboard工做目录

#在master上进行操做
[root@master ~]# cd /k8s/

#将须要上传的页面文件到此文件夹下
[root@master k8s]# mkdir dashboard

“dashboard-rbac” 受权许可链接APIserver

“dashboard-secret” 进行加密配置

“dashboard-configmap” dashboard配置文件

“dashboard-controller” 应用配置

“dashboard-service” 用于发布应用

上面四个YAML文件从GITHUB上进行下载，地址：https://github.com/kubernetes/kubernetes/tree/master/cluster/addons/dashboard

生成相关的POD

#顺序不能变！！！切记！！切记！！
[root@master dashboard]# kubectl create -f dashboard-rbac.yaml

[root@master dashboard]# kubectl create -f dashboard-secret.yaml

[root@master dashboard]# kubectl create -f dashboard-configmap.yaml

[root@master dashboard]# kubectl create -f dashboard-controller.yaml

[root@master dashboard]# kubectl create -f dashboard-service.yaml

将POD划入指定命名空间

[root@master dashboard]# kubectl get pods -n kube-system
NAME                                    READY   STATUS    RESTARTS   AGE
kubernetes-dashboard-65f974f565-d2wgw   1/1     Running   2          90s

#查看详细信息
[root@master dashboard]# kubectl get pods,svc -n kube-system
NAME                                        READY   STATUS             RESTARTS   AGE
pod/kubernetes-dashboard-65f974f565-d2wgw   1/1     Running            2          116s

NAME                           TYPE       CLUSTER-IP   EXTERNAL-IP   PORT(S)         AGE
service/kubernetes-dashboard   NodePort   10.0.0.109   <none>        443:30001/TCP   112s

此时，在浏览器访问某个node节点的30001端口便可

---

致使这个问题的根部缘由就是缺乏证书，某些浏览器会阻止不安全的访问

编写执行脚本进行证书自签

[root@master01 dashboard]# bash dashboard.sh /root/k8s/apiserver/
##脚本手工进行编写
#!/bin/bash
#DashBoard用证书
#
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

从新应用新的自签证书，并应用

#从新应用自签的证书
[root@master01 dashboard]# vim dashboard-controller.yaml
        args:
          # PLATFORM-SPECIFIC ARGS HERE
          - --auto-generate-certificates
          - --tls-key-file=dashboard-key.pem
          - --tls-cert-file=dashboard.pem    ##添加最后两行

#进行从新部署
[root@master01 dashboard]# kubectl apply -f dashboard-controller.yaml

---

生成进入的令牌

#生成令牌
[root@master01 dashboard]# kubectl create -f k8s-admin.yaml

#将令牌进行保存
[root@master01 dashboard]# kubectl get secret -n kube-system
NAME                               TYPE                                  DATA   AGE
dashboard-admin-token-klr2w        kubernetes.io/service-account-token   3      74s
default-token-68xvt                kubernetes.io/service-account-token   3      54m
kubernetes-dashboard-certs         Opaque                                10     11m
kubernetes-dashboard-key-holder    Opaque                                2      23m
kubernetes-dashboard-token-drsc7   kubernetes.io/service-account-token   3      23m

#查看保存的令牌
[root@master01 dashboard]# kubectl describe secret dashboard-admin-token-klr2w -n kube-system
##复制token便可

把复制的token进行粘贴便可进入WEB页面

以上，就是整个K8S所有节点部署的配置过程~~~