kubernetes stateful elasticsearch cluster

client.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: es-client
  labels:
    app: es-client  
spec:
  ports:  
  - port: 9200
    name: http
    targetPort: 9200
  selector:
    app: es-client
---        
apiVersion: v1
kind: ReplicationController
metadata:
  name: es-client
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: es-client
        annotations:
              pod.beta.kubernetes.io/init-containers: '[
                {
                "name": "sysctl",
                  "image": "busybox",
                  "imagePullPolicy": "IfNotPresent",
                  "command": ["sysctl", "-w", "vm.max_map_count=262144"],
                  "securityContext": {
                    "privileged": true
                  }
                }
              ]'
    spec:
      containers:
      - name: es-client
        image: elasticsearch:5.1.1
        env:
        - name: ES_JAVA_OPTS
          value: -Xms256m -Xmx256m
        args:
        - -Ecluster.name=k8s
        - -Enode.name=${HOSTNAME}
        - -Ediscovery.zen.ping.unicast.hosts=es-master.default.svc.cluster.local
        - -Enode.master=false
        - -Enode.data=false
        - -Enode.ingest=false
        ports:        
        - containerPort: 9300
          name: transport        
        - containerPort: 9200
          name: http
        volumeMounts:
        - mountPath: /usr/share/elasticsearch/data
          name: data-volume          
      volumes:
        - name: data-volume
          emptyDir: {}
       

data.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: es-data
  labels:
    app: es-data
spec:
  ports:  
  - port: 9300
    name: transport
  clusterIP: None
  selector:
    app: es-data
---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: es-data
spec:
  serviceName: "es-data"
  replicas: 1
  template:
    metadata:
      labels:
        app: es-data
      annotations:
        pod.beta.kubernetes.io/init-containers: '[
          {
          "name": "sysctl",
            "image": "busybox",
            "imagePullPolicy": "IfNotPresent",
            "command": ["sysctl", "-w", "vm.max_map_count=262144"],
            "securityContext": {
              "privileged": true
            }
          }
        ]'
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: es-data
        image: elasticsearch:5.1.1
        env:
        - name: ES_JAVA_OPTS
          value: -Xms256m -Xmx256m
        args:
        - -Ecluster.name=k8s
        - -Enode.name=${HOSTNAME}
        - -Ediscovery.zen.ping.unicast.hosts=es-master.default.svc.cluster.local
        - -Enode.master=false
        - -Enode.data=true
        - -Enode.ingest=false
        ports:        
        - containerPort: 9300
          name: transport
        - containerPort: 9200
          name: http
        volumeMounts:
        - mountPath: /usr/share/elasticsearch/data
          name: data-volume
  volumeClaimTemplates:
  - metadata:
      name: data-volume
      annotations:
        volume.alpha.kubernetes.io/storage-class: anything
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 2Gi

master.yaml

---
apiVersion: v1
kind: Service
metadata:
  name: es-master
  labels:
    app: es-master
spec:
  ports:  
  - port: 9300
    name: transport
  clusterIP: None
  selector:
    app: es-master

---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: es-master
spec:
  serviceName: "es-master"
  replicas: 3
  template:
    metadata:
      labels:
        app: es-master
      annotations:
          pod.beta.kubernetes.io/init-containers: '[
            {
            "name": "sysctl",
              "image": "busybox",
              "imagePullPolicy": "IfNotPresent",
              "command": ["sysctl", "-w", "vm.max_map_count=262144"],
              "securityContext": {
                "privileged": true
              }
            }
          ]'
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: es-master
        image: elasticsearch:5.1.1
        env:
        - name: ES_JAVA_OPTS
          value: -Xms256m -Xmx256m
        args:
        - -Ecluster.name=k8s
        - -Enode.name=${HOSTNAME}
        - -Ediscovery.zen.ping.unicast.hosts=es-master.default.svc.cluster.local
        - -Ediscovery.zen.minimum_master_nodes=2
        - -Enode.master=true
        - -Enode.data=false
        - -Enode.ingest=false        
        ports:        
        - containerPort: 9300
          name: transport
        - containerPort: 9200
          name: http
        volumeMounts:
        - mountPath: /usr/share/elasticsearch/data
          name: data-volume
  volumeClaimTemplates:
  - metadata:
      name: data-volume
      annotations:
        volume.alpha.kubernetes.io/storage-class: anything
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 2Gi