安装Kubernetes-Dashboard插件

关于如何搭建基于docker的Kubernetes环境，请看笔者另一片博客：

http://blog.csdn.net/jinzili777/article/details/73498476

插件说明

完成使用Kubeadm搭建Kubernetes(docker)之后，Kubernetes实际已经搭建成功～但是频繁操作命令行界面是会崩溃的好吗！！所以在Kubernetes 1.2版本后新增了Kube Dashboard，我们就可以在浏览器愉快的通过点 点 点操作啦。

功能说明

create：上传json或者yaml的方式新建resource，同kubectl create -f

delete：删除副本(Replication Controllers)

modify：修改副本数(replicas)

query：查询相关信息，同kubectl get

通过web-ui+上述功能，我们就能基本脱离命令行界面了！

安装步骤

此时已经完成kubernetes的搭建。

我们将dashboard以静态Pod的方式运行在Master Node上。

cd /etc/kubernetes/manifests

此目录是已有的静态Pod的yaml文件，我们创建kubernetes-dashboard.yaml文件

# Copyright 2015 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0 #
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Configuration to deploy release version of the Dashboard UI compatible with
# Kubernetes 1.6 (RBAC enabled).
#
# Example usage: kubectl create -f <this_file>

apiVersion: v1
kind: ServiceAccount
metadata:
labels:
app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
---
apiVersion: rbac.authorization.k8s.io/v1beta1
kind: ClusterRoleBinding
metadata:
name: kubernetes-dashboard
labels:
app: kubernetes-dashboard
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: kubernetes-dashboard
namespace: kube-system
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
labels:
app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
spec:
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
app: kubernetes-dashboard
template:
metadata:
labels:
app: kubernetes-dashboard
spec:
containers:
- name: kubernetes-dashboard
image: registry.cn-beijing.aliyuncs.com/bbt_k8s/kubernetes-dashboard-amd64:v1.6.0
imagePullPolicy: Always
ports:
- containerPort: 9090
protocol: TCP
args:
# Uncomment the following line to manually specify Kubernetes API server Host
# If not specified, Dashboard will attempt to auto discover the API server and connect
# to it. Uncomment only if the default does not work.
# - --apiserver-host=http://my-address:port
livenessProbe:
httpGet:
path: /
port: 9090
initialDelaySeconds: 30
timeoutSeconds: 30
serviceAccountName: kubernetes-dashboard
# Comment the following tolerations if Dashboard must not be deployed on master
tolerations:
- key: node-role.kubernetes.io/master
effect: NoSchedule
---
kind: Service
apiVersion: v1
metadata:
labels:
app: kubernetes-dashboard
name: kubernetes-dashboard
namespace: kube-system
spec:
type: NodePort
ports:
- port: 80
targetPort: 9090
selector:
app: kubernetes-dashboard

创建文件kubernetes-dashboard-rbac.yaml文件

kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: dashboard-admin
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: cluster-admin
subjects:
- kind: ServiceAccount
name: default
namespace: kube-system

创建dashboard、dashboard-rbac resource

kubectl create -f kubernetes-dashboard-rbac.yml
kubectl create -f kubernetes-dashboard.yaml

创建成功结果如下所示

[root@kube-master manifests]# kubectl create -f dashboard-rbac.yaml
clusterrolebinding "dashboard-admin" created
[root@kube-master manifests]# kubectl create -f dashboard.yaml
serviceaccount "kubernetes-dashboard" created
clusterrolebinding "kubernetes-dashboard" created
deployment "kubernetes-dashboard" created
service "kubernetes-dashboard" created

查询dashboard运行的端口

kubectl describe --namespace kube-system service kubernetes-dashboard

[root@kube-master manifests]# kubectl describe --namespace kube-system service kubernetes-dashboardName:           kubernetes-dashboard
Namespace:      kube-system
Labels:         app=kubernetes-dashboard
Annotations:        <none>
Selector:       app=kubernetes-dashboard
Type:           NodePort
IP:         10.110.236.54
Port:           <unset> 80/TCP
NodePort:       <unset> 30989/TCP
Endpoints:      10.244.0.16:9090
Session Affinity:   None
Events:         <none>

NodePort就是我们要访问的端口啦！快快打开浏览器输入{master-ip}:{node-port}吧！