一键建立zookeeper集群

使用yaml文件的好处，通过service name来进行pod间的服务发现，

集群配置dns.

[root@k8s-master ~]# cat zookeeper-cluster.yaml
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: zookeeper-
spec:
  replicas:
  template:
    metadata:
      labels:
        name: zookeeper-
    spec:
      containers:
        - name: zookeeper-
          image: docker.io/zookeeper:3.4.
          imagePullPolicy: IfNotPresent
          env:
          - name: ZOO_MY_ID
            value: ""
          - name: ZOO_SERVERS
            value: "server.1=0.0.0.0:2888:3888 server.2=zookeeper-2:2888:3888 server.3=zookeeper-3:2888:3888"
          ports:
          - containerPort: 

---

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: zookeeper-
spec:
  replicas:
  template:
    metadata:
      labels:
        name: zookeeper-
    spec:
      containers:
        - name: zookeeper-
          image: docker.io/zookeeper:3.4.
          imagePullPolicy: IfNotPresent
          env:
          - name: ZOO_MY_ID
            value: ""
          - name: ZOO_SERVERS
            value: "server.1=zookeeper-1:2888:3888 server.2=0.0.0.0:2888:3888 server.3=zookeeper-3:2888:3888"
          ports:
          - containerPort: 

---

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: zookeeper-
spec:
  replicas:
  template:
    metadata:
      labels:
        name: zookeeper-
    spec:
      containers:
        - name: zookeeper-
          image: docker.io/zookeeper:3.4.
          imagePullPolicy: IfNotPresent
          env:
          env:
          - name: ZOO_MY_ID
            value: ""
          - name: ZOO_SERVERS
            value: "server.1=zookeeper-1:2888:3888 server.2=zookeeper-2:2888:3888 server.3=0.0.0.0:2888:3888"
          ports:
          - containerPort:
---

apiVersion: v1
kind: Service
metadata:
  name: zookeeper-
  labels:
    name: zookeeper-
spec:
  ports:
    - name: client
      port:
      protocol: TCP
    - name: followers
      port:
      protocol: TCP
    - name: election
      port:
      protocol: TCP
  selector:
    name: zookeeper-

---

apiVersion: v1
kind: Service
metadata:
  name: zookeeper-
  labels:
    name: zookeeper-
spec:
  ports:
    - name: client
      port:
      protocol: TCP
    - name: followers
      port:
      protocol: TCP
    - name: election
      port:
      protocol: TCP
  selector:
    name: zookeeper-

---

apiVersion: v1
kind: Service
metadata:
  name: zookeeper-
  labels:
    name: zookeeper-
spec:
  ports:
    - name: client
      port:
      protocol: TCP
    - name: followers
      port:
      protocol: TCP
    - name: election
      port:
      protocol: TCP
  selector:
    name: zookeeper-