Kubernetes addons 之 Dashboard部署

Dashboard是Kubernetes集群的基于Web的通用UI。 它允许用户管理在群集中运行的应用程序并对其进行故障排除，以及管理群集本身。

dashboard-ui.png

安装步骤

• 解压源码包
• 修改配置文件
• 创建dashboard容器
• 创建Service Account，Dashboard Role & Role Binding
• 测试访问

解压源码包

我们解压了kubernetes-server-linux-amd64.tar.gz之后，进入kubernetes

[root@k8s ~]# cd kubernetes
[root@k8s kubernetes]# ls
addons  kubernetes-src.tar.gz  LICENSES  server
[root@k8s kubernetes]# tar zxf kubernetes-src.tar.gz 
[root@k8s kubernetes]# ls
addons             cluster             hack                   Makefile.generated_files  SECURITY_CONTACTS  translations
api                cmd                 kubernetes-src.tar.gz  OWNERS                    server             vendor
build              code-of-conduct.md  LICENSE                OWNERS_ALIASES            staging            WORKSPACE
BUILD.bazel        CONTRIBUTING.md     LICENSES               pkg                       SUPPORT.md
CHANGELOG-1.13.md  docs                logo                   plugin                    test
CHANGELOG.md       Godeps              Makefile               README.md                 third_party
[root@k8s kubernetes]# cd cluster/addons/dashboard/
[root@k8s dashboard]# ls
dashboard-configmap.yaml   dashboard-rbac.yaml    dashboard-service.yaml  OWNERS
dashboard-controller.yaml  dashboard-secret.yaml  MAINTAINERS.md          README.md

修改配置文件

1. 需要修改的文件是dashboard-controller.yaml，将其中的镜像替换成国内的镜像：
   k8s.gcr.io/kubernetes-dashboard-amd64 替换成 registry.cn-hangzhou.aliyuncs.com/kuberneters/kubernetes-dashboard-amd64
   阿里云的镜像地址为

https://cr.console.aliyun.com/cn-hangzhou/instances/images
替换完成后如图所示

dashboard-controller.yaml

2. 修改文件dashboard-service.yaml 的外部访问方式修改为NodePort，增加type: NodePort
   和nodePort: 30001
   如图所示：

   
   
   

   dashboard-service.yaml

创建dashboard容器

创建对应的对象

[root@k8s dashboard]# kubectl create -f dashboard-configmap.yaml 
configmap/kubernetes-dashboard-settings created
[root@k8s 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@k8s dashboard]# kubectl create -f  dashboard-secret.yaml
secret/kubernetes-dashboard-certs created
secret/kubernetes-dashboard-key-holder created
[root@k8s dashboard]# kubectl create -f dashboard-controller.yaml
serviceaccount/kubernetes-dashboard created
deployment.apps/kubernetes-dashboard created
[root@k8s dashboard]# kubectl get pods -n kube-system
NAME                                    READY   STATUS    RESTARTS   AGE
kubernetes-dashboard-5fbc6b767b-mqps8   1/1     Running   0          13s
[root@k8s dashboard]# vim dashboard-service.yaml 
[root@k8s dashboard]# kubectl create -f dashboard-service.yaml
service/kubernetes-dashboard created
[root@k8s dashboard]# kubectl get pods,svc -n kube-system
NAME                                        READY   STATUS    RESTARTS   AGE
pod/kubernetes-dashboard-5fbc6b767b-mqps8   1/1     Running   0          2m49s

NAME                           TYPE       CLUSTER-IP   EXTERNAL-IP   PORT(S)         AGE
service/kubernetes-dashboard   NodePort   10.0.0.223           443:30001/TCP   32s

创建Service Account，Dashboard Role & Role Binding

创建admin-dashboard.yaml文件

[root@k8s dashboard]# cat admin-dashboard.yaml 
# ------------------- Dashboard Service Account ------------------- #

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

---
# ------------------- Dashboard Role & Role Binding ------------------- #
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: kubernetes-dashboard-admin
  namespace: kube-system
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: cluster-admin
subjects:
- kind: ServiceAccount
  name: dashboard-admin
  namespace: kube-system

[root@k8s dashboard]# 

创建Service Account，Dashboard Role & Role Binding

[root@k8s dashboard]# kubectl create -f admin-dashboard.yaml 
serviceaccount/dashboard-admin created
clusterrolebinding.rbac.authorization.k8s.io/kubernetes-dashboard-admin created

测试访问

访问地址：https://NodeIP:30001
注意:需要使用火狐浏览器，Google Chrome不可以

登录页面

我们选择令牌选项
获取令牌方式如下：

[root@k8s dashboard]# kubectl get secret -n kube-system
NAME                               TYPE                                  DATA   AGE
dashboard-admin-token-ms29g        kubernetes.io/service-account-token   3      3m3s
default-token-9tsft                kubernetes.io/service-account-token   3      2d23h
kubernetes-dashboard-certs         Opaque                                0      14m
kubernetes-dashboard-key-holder    Opaque                                2      14m
kubernetes-dashboard-token-5kx9h   kubernetes.io/service-account-token   3      11m
[root@k8s dashboard]# kubectl describe secret dashboard-admin-token-ms29g -n kube-system
Name:         dashboard-admin-token-ms29g
Namespace:    kube-system
Labels:       
Annotations:  kubernetes.io/service-account.name: dashboard-admin
              kubernetes.io/service-account.uid: 6e7b454c-8374-11e9-b261-000c29f3daa6

Type:  kubernetes.io/service-account-token

Data
====
namespace:  11 bytes
token:      eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.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.Aqq5tiKJTSkPHkCwfQEyTmDpbny05BzopgZzLrmCpJSsW3atbxo0XP1Bo8g8Ja8qL8VUQMJDDp14R-UN0jEd2PEAQo56REJHHx55Lg3M4uIFL9bSshUlZWYjk3Rfpyk0-siuNBD8fO15kaEFBYnMHAbYYGmsdG0ysCmAk51VWhoEuuUn7xWoSDICU41rQw5549o9Ipi52dvynrbWbRKFhan_vMpR-bMBhzIC6fsl9p0eyy5hXg5BJBIbGGVxJqLVH-xHGp8TFHR0iUBHj3vOGihevuhKTo9R4oGY3xpACeZp8JO0a5gNtZrQC-mfMlqvlkEgZswfmb-1XeCFDtTPCA
ca.crt:     1359 bytes

• 首先查询secret，寻找dashboard-admin-token-xxxx命名的secret

• 使用describe查询令牌，token的那一长串即使令牌。复制到登陆页面的令牌输入框，点击登录即可进入主页面

  
  
  

  首页

至此，Dashboard部署完成。