apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: zoo
  namespace: kafka
spec:
  serviceName: "zoo"
  replicas: 5
  template:
    metadata:
      labels:
        app: zookeeper
      annotations:
        pod.beta.kubernetes.io/init-containers: '[
            {
                "name": "install",
                "image": "alpine:3.4",
                "command": ["sh", "-c", "echo $(($(hostname | sed s/zoo-//) + 1)) > /data/myid" ],
                "volumeMounts": [
                    {
                        "name": "datadir",
                        "mountPath": "/data"
                    }
                ]
            }
        ]'
    spec:
      terminationGracePeriodSeconds: 10
      containers:
        - name: zookeeper
          image: zookeeper:3.4.9@sha256:50cfe2c77fe203ab528ffb808f1a8b505db73b1f85aedbc52e4fdde69e2ebfe8
          env:
            - name: ZOO_SERVERS
              value: server.1=zoo-0.zoo:2888:3888:participant server.2=zoo-1.zoo:2888:3888:participant server.3=zoo-2.zoo:2888:3888:participant server.4=zoo-3.zoo:2888:3888:participant server.5=zoo-4.zoo:2888:3888:participant
          ports:
            - containerPort: 2181
              name: client
            - containerPort: 2888
              name: peer
            - containerPort: 3888
              name: leader-election
          volumeMounts:
            - name: datadir
              mountPath: /data
            # There's defaults in this folder, such as logging config
            #- name: conf
            #  mountPath: /conf
      volumes:
        #- name: conf
        #  emptyDir: {}
        - name: datadir
          emptyDir: {}