version: '2'
services:
    es-master:
        labels: 
            - io.rancher.container.hostname_override=container_name
            - io.rancher.sidekicks=es-data
        image: docker.elastic.co/elasticsearch/elasticsearch:5.3.0
        environment: 
            - "cluster.name=${cluster_name}"
            - "node.name=$${HOSTNAME}"
            - "bootstrap.memory_lock=true"
            - "xpack.security.enabled=false"
            - "ES_JAVA_OPTS=-Xms${heap_size} -Xmx${heap_size}"
            - "discovery.zen.minimum_master_nodes=${minimum_master_nodes}"
            - "node.master=true"
        ulimits: 
            memlock:
                soft: -1
                hard: -1
            nofile:
                soft: 65536
                hard: 65536
        mem_limit: ${mem_limit}
        mem_swappiness: 0
        cap_add: 
            - IPC_LOCK
        volumes_from: 
            - es-data

    es-node:
        labels: 
            - io.rancher.container.hostname_override=container_name
            - io.rancher.sidekicks=es-data
        image: docker.elastic.co/elasticsearch/elasticsearch:5.3.0
        environment: 
            - "cluster.name=${cluster_name}"
            - "node.name=$${HOSTNAME}"
            - "bootstrap.memory_lock=true"
            - "xpack.security.enabled=false"
            - "discovery.zen.ping.unicast.hosts=es-master"
            - "ES_JAVA_OPTS=-Xms${heap_size} -Xmx${heap_size}"
            - "node.master=false"
        ulimits: 
            memlock:
                soft: -1
                hard: -1
            nofile:
                soft: 65536
                hard: 65536
        mem_limit: ${mem_limit}
        mem_swappiness: 0
        cap_add: 
            - IPC_LOCK
        volumes_from: 
            - es-data
        depends_on: 
            - es-master
    
    es-data:
        labels:
            - io.rancher.container.start_once=true
        image: docker.elastic.co/elasticsearch/elasticsearch:5.3.0
        entrypoint: /bin/true
        volumes: 
            - /usr/share/elasticsearch/data

    kibana:
        labels: 
            - io.rancher.container.hostname_override=container_name
        image: docker.elastic.co/kibana/kibana:5.3.0
        environment: 
            - "bootstrap.memory_lock=true"
            - "xpack.security.enabled=false"
            - "ELASTICSEARCH_URL=http://es-master:9200"
            - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
        mem_limit: 1073741824
        mem_swappiness: 0
        ports:
            - "${kibana_port}:5601"
        depends_on:
            - es-master