Docker-compose file to build up two ElasticSearch clusters: the first with 1 node and a Kibana instance, the second only with 1 node. (v6.5.4)

2clusters-with-1-node.yml

version: '3'
services:
  esnode-earth:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.5.4
    container_name: esnode-earth
    environment:
      - cluster.name=elastic-cluster-earth
      - node.name=esnode-earth
      - bootstrap.memory_lock=true
      - ES_JAVA_OPTS=-Xms512m -Xmx512m
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - esnode-earth-data:/usr/share/elasticsearch/data
    ports:
      - 9200:9200
    networks:
      - elastic-net
  kibana:
    image: docker.elastic.co/kibana/kibana:6.5.4
    container_name: kibana
    environment:
      - elasticsearch.url=http://elasticsearch:9300
    ulimits:
      memlock:
        soft: -1
        hard: -1
    ports:
      - 5601:5601
    networks:
      - elastic-net
    links:
      - esnode-earth:elasticsearch

  esnode-mars:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.5.4
    container_name: esnode-mars
    environment:
      - cluster.name=elastic-cluster-mars
      - node.name=esnode-mars
      - bootstrap.memory_lock=true
      - ES_JAVA_OPTS=-Xms512m -Xmx512m
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - esnode-mars-data:/usr/share/elasticsearch/data
    ports:
      - 9201:9200
      - 9301:9300
    networks:
      - elastic-net

volumes:
  esnode-earth-data:
    driver: local
  esnode-mars-data:
    driver: local

networks:
  elastic-net: