Docker Compose Elasticsearch cluster example (with Kibana)

docker-compose.yml

version: '3.1'
services:
    elasticsearch:
        image: elasticsearch
        container_name: elasticsearch
        environment:
            - bootstrap.memory_lock=true
            - ES_JAVA_OPTS=-Xms512m -Xmx512m
        command: 
            - "-Etransport.host=0.0.0.0"
            - "-Ediscovery.zen.minimum_master_nodes=1"
            - "-Ecluster.name=docker-cluster"
            - "-Enetwork.host=elasticsearch"
            - "-Ediscovery.zen.ping.unicast.hosts=elasticsearch2"
        volumes:
            - esdata1:/usr/share/elasticsearch/data
        ports:
            - 9200:9200
        networks:
            - esnet

    elasticsearch2:
        image: elasticsearch
        container_name: elasticsearch2
        environment:
            - bootstrap.memory_lock=true
            - ES_JAVA_OPTS=-Xms512m -Xmx512m
        command:
            - "-Etransport.host=0.0.0.0"
            - "-Ediscovery.zen.minimum_master_nodes=1"
            - "-Ecluster.name=docker-cluster"
            - "-Enetwork.host=elasticsearch2"
            - "-Ediscovery.zen.ping.unicast.hosts=elasticsearch"
        volumes:
            - esdata2:/usr/share/elasticsearch/data
        networks:
            - esnet

    kibana:
        image: kibana
        ports:
            - 5601:5601
        networks:
            - esnet
volumes:
    esdata1:
        driver: local
    esdata2:
        driver: local

networks:
    esnet: