Kubernets搭建Kubernetes-dashboard

  接上篇文章,在已经部署好Kubernetes的基础上部署kubernetes-dashboard,它是官方提供的用户管理Kubernets集群可视化工具;部署dashboard其实和在kubernets部署其他的应用一样,创建dashboard所需的Replication Controller、Service服务即可;
  注意Kubernets的Overlay Network要正常工作,每个节点都已经启动Flannel,并且docker启动时配置了Flannel提供的子网,或使用其他方式保证Container之间的连通,否则dashboard将无法正常工作;

Namespace

  使用默认的Namespace也是可以得,因为dashboard算是属于系统应用所以这里使用Namespace把dashboard与其他App进行隔离,建议线上正式的Kubernetes环境都要使用Namespace;
  创建kube-namespace.yaml文件,内容如下:

apiVersion: v1  
kind: Namespace  
metadata:  
name: kube-system

Replication Controller

  Replication Controller用于保证pod期望状态与当前状态一致,还可对pod数量弹性伸缩,这里主要是保证dashboard的正常运行;
  创建kube-dashboard-rc.yaml文件:内容如下:

apiVersion: v1
kind: ReplicationController
metadata:
# Keep the name in sync with image version and
# gce/coreos/kube-manifests/addons/dashboard counterparts
name: kubernetes-dashboard-latest
namespace: kube-system
labels:
  k8s-app: kubernetes-dashboard
version: latest
kubernetes.io/cluster-service: "true"
spec:
  replicas: 1
selector:
  k8s-app: kubernetes-dashboard
template:
  metadata:
    labels:
      k8s-app: kubernetes-dashboard
      version: latest
      kubernetes.io/cluster-service: "true"
  spec:
    containers:
    - name: kubernetes-dashboard
      image: 192.168.2.144:5000/kkubernetes-dashboard-amd64
      resources:
        # keep request = limit to keep this container in guaranteed class
        limits:
          cpu: 100m
          memory: 50Mi
        requests:
          cpu: 100m
          memory: 50Mi
      ports:
      - containerPort: 9090
      args:
       -  --apiserver-host=http://192.168.2.143:8080
      livenessProbe:
        httpGet:
          path: /
          port: 9090
        initialDelaySeconds: 30
        timeoutSeconds: 30  

  由于kubernetes-dashboard-amd64如要被墙,这里下了index.alauda.cn/googlecontainer/kubernetes-dashboard-amd64放在本地私有仓库,使用了本地私有长裤镜像库kubernetes-dashboard-amd64;还要注意别忘了配置apiserver-host否则dashboard将无法连接到kubernets集群;

Service

  service用于配置dashboard的label selector;
  创建kube-dashboard-svc.yaml文件,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:
  selector:
    k8s-app: kubernetes-dashboard
  ports:
  - port: 80
    targetPort: 9090  

kubernates中创建dashboard应用

  1、创建namespace

kubectl -s 192.168.2.143:8080 create -f namespace.yaml  

  2、创建replication Controller

kubectl -s 192.168.2.143:8080 create -f kube-dashboard-rc.yaml

  3、创建service

kubectl -s 192.168.2.143:8080 create -f kube-dashboard-svc.yaml  

  查看dashboard启动情况

图片

  Kubernetes dashboard访问地址:http://192.168.2.143:8080/ui,注意这里的地址是master节点的地址;

图片

参考资料:
http://kubernetes.io/docs/user-guide/

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