elasticsearch.yaml

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: elasticsearch
spec:
  replicas: 3
  selector:
    matchLabels:
      app: elasticsearch
  template:
    metadata:
      labels:
        app: elasticsearch
    spec:
      containers:
      - name: elasticsearch
        image: docker.elastic.co/elasticsearch/elasticsearch:7.12.0
        ports:
        - containerPort: 9200
          name: rest
        - containerPort: 9300
          name: inter-node
        volumeMounts:
        - name: data
          mountPath: /usr/share/elasticsearch/data
        env:
        - name: cluster.name
          value: my-cluster
        - name: node.name
          valueFrom:
            fieldRef:
              fieldPath: metadata.name
        - name: discovery.seed_hosts
          value: "elasticsearch-0.elasticsearch.default.svc.cluster.local,elasticsearch-1.elasticsearch.default.svc.cluster.local,elasticsearch-2.elasticsearch.default.svc.cluster.local"
        - name: cluster.initial_master_nodes
          value: "elasticsearch-0,elasticsearch-1,elasticsearch-2"
      initContainers:
      - name: fix-permissions
        image: busybox
        command: ["sh", "-c", "chown -R 1000:1000 /usr/share/elasticsearch/data"]
        volumeMounts:
        - name: data
          mountPath: /usr/share/elasticsearch/data
      volumes:
      - name: data
        emptyDir: {}
---
apiVersion: v1
kind: Service
metadata:
  name: elasticsearch
spec:
  ports:
  - name: rest
    port: 9200
    targetPort: 9200
  - name: inter-node
    port: 9300
    targetPort: 9300
  selector:
    app: elasticsearch
  type: LoadBalancer