es-data.yaml

apiVersion: apps/v1
kind: StatefulSet
metadata:
  labels:
    app: elasticsearch
    role: data
  name: elasticsearch-data
spec:
  replicas: 2
  serviceName: elasticsearch-data
  selector:
    matchLabels:
      app: elasticsearch
      role: data
  template:
    metadata:
      labels:
        app: elasticsearch
        role: data
    spec:
      securityContext:
        fsGroup: 1000
      restartPolicy: Always
      initContainers:
      - name: configure-sysctl
        securityContext:
          runAsUser: 0
          privileged: true
        image: registry.custom.com/elasticsearch:7.2.0
        command: ["/bin/bash", "-c", "sysctl -w vm.max_map_count=262144;"]
        resources:
          {}
      containers:
        - name: elasticsearch-data
          image: registry.custom.com/elasticsearch:7.2.0
          imagePullPolicy: IfNotPresent
          securityContext:
            privileged: true
          ports:
            - containerPort: 9300
              protocol: TCP
          env:
            - name: cluster.name
              value: "es_cluster"
            - name: node.master
              value: "false"
            - name: node.data
              value: "true"
            - name: node.ingest
              value: "true"
            - name: discovery.seed_hosts
              value: "elasticsearch-discovery"
            - name: bootstrap.memory_lock  # 开启
              value: 'true'
            - name: ES_JAVA_OPTS
              value: "-Xms1536m -Xmx1536m"
          volumeMounts:
          - name: es-data
            mountPath: /usr/share/elasticsearch/data
      volumes:
      - name: es-data
        hostPath:
          path: /data/elasticsearch