docker-compose.yml

version: "2"
services:
  elasticsearch1:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.4.2
    container_name: elasticsearch1
    environment:
      - node.name=elasticsearch1
      - cluster.name=docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
      - discovery.seed_hosts=elasticsearch2
      - cluster.initial_master_nodes=elasticsearch1,elasticsearch2
    ulimits:
      memlock:
        soft: -1
        hard: -1
    mem_limit: 1g
    ports:
      - 9200:9200
    networks:
      - esnet

  elasticsearch2:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.4.2
    environment:
      - node.name=elasticsearch2
      - cluster.name=docker-cluster
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
      - discovery.seed_hosts=elasticsearch1
      - cluster.initial_master_nodes=elasticsearch1,elasticsearch2
    ulimits:
      memlock:
        soft: -1
        hard: -1
    mem_limit: 1g
    networks:
      - esnet

networks:
  esnet: