CentOS7搭建Kubernetes dashboard

注意：两个node节点都需要下载此镜像，master节点不用，因为dashboard的pod会被master调度到两台node之一去创建，不会在master本地创建。

二．具体操作
以下操作全部在master节点执行：
1．编辑dashboard-controller.yaml，创建dashboard的pod
注意修改红色字体的部分！
vim dashboard-controller.yaml，内容如下：

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
name: kubernetes-dashboard
namespace: kube-system
labels:
k8s-app: kubernetes-dashboard
kubernetes.io/cluster-service: "true"
spec:
selector:
matchLabels:
k8s-app: kubernetes-dashboard
template:
metadata:
labels:
k8s-app: kubernetes-dashboard
annotations:
scheduler.alpha.kubernetes.io/critical-pod: ''
scheduler.alpha.kubernetes.io/tolerations: '[{"key":"CriticalAddonsOnly", "operator":"Exists"}]'
spec:
containers:

• name: kubernetes-dashboard
  image: mritd/kubernetes-dashboard-amd64:v1.5.1
  imagePullPolicy: IfNotPresent
  resources:
  limits:
  cpu: 100m
  memory: 50Mi
  requests:
  cpu: 100m
  memory: 50Mi
  ports:

• --apiserver-host=http://10.0.2.90:8080
  livenessProbe:
  httpGet:
  path: /
  port: 9090
  initialDelaySeconds: 30
  timeoutSeconds: 30

• containerPort: 9090
  args:

红色字体解释：

1. mritd/kubernetes-dashboard-amd64:v1.5.1：dashboard的镜像，如果你的不是此镜像，请注意修改

2. --apiserver-host=http://10.0.2.90:8080，填写你master的apiserver地址，默认端口一般都是8080

===========================================================

OK，现在开始编辑dashboard-service.yaml，将dashboard的访问端口映射到两台node宿主机的端口，以便外部访问。
vim dashboard-service.yaml，内容如下：
apiVersion: v1
kind: Service
metadata:
name: kubernetes-dashboard
namespace: kube-system
labels:
k8s-app: kubernetes-dashboard
kubernetes.io/cluster-service: "true"
spec:
type: NodePort
selector:
k8s-app: kubernetes-dashboard
ports:

• port: 80
  targetPort: 9090
  nodePort: 30003

红色字体解释：
port是指service的端口
targetport是指pod的端口
nodePort是指宿主机即node的端口，k8s外部就通过这个端口访问dashboard

创建dashboard
kubectl create -f dashboard-controller.yaml
结果显示：deployment "kubernetes-dashboard" created

kubectl create -f dashboard-service.yaml
结果显示：service "kubernetes-dashboard" created

查看创建结果：
[root@k8s-master yaml]# kubectl get pods --namespace=kube-system -o wide
NAME READY STATUS RESTARTS AGE IP NODE
kubernetes-dashboard-56bc76b6bb-b6kfx 1/1 Running 0 32s 172.18.0.194 node1

[root@k8s-master yaml]# kubectl get svc --namespace=kube-system
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes-dashboard NodePort 172.18.0.196 <none> 80:30003/TCP 13s

OK，创建成功，接下来就可以通过浏览器访问node节点（两个node任选一个都可以）的30003端口体验kubernetes-dashboard：

CentOS7搭建Kubernetes dashboard

原文：http://blog.51cto.com/13557682/2122369