• 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

      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;

    参考资料:
    http://kubernetes.io/docs/user-guide/
    文章首发地址:Solinx
    http://www.solinx.co/archives/632

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  • 原文地址:https://www.cnblogs.com/softlin/p/5675890.html
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