TICK services docker compose

docker-compose.yml

version: '2'

networks:
  # create a network to share between TICK services, so they can connect to each other by specifying influxdb network name  
  influxdb:

services:
  telegraf:
    image: telegraf:1.2.1
    container_name: telegraf1.2.1
    # use network_mode: "service:influxdb" to be able to use http://localhost:8086 to connect influxdb output plugin
    # an alternative option would be to specify 
    # networks: 
    #   - influxdb
    # which puts both Telegraf and InfluxDB on the same network, 
    # but does require to update conf/telegraf.conf: set urls of [[output.influxdb]] into http://influxdb:8086          
    network_mode: "service:influxdb"
    volumes:
      - $PWD/conf/telegraf.conf:/etc/telegraf/telegraf.conf:ro
    depends_on:
      - influxdb
  influxdb:
    image: influxdb:1.2
    container_name: influxdb1.2
    ports:    
      # Administrator interface port 
      - "8083:8083"
      # HTTP API port 
      - "8086:8086"
    volumes:
      - $PWD/data/influxdb:/var/lib/influxdb 
      - $PWD/conf/influxdb.conf:/etc/influxdb/influxdb.conf:ro
    environment:
        # to enable admin interface, or otherwise from influxdb.conf [admin]/enable
        # although it is planned to be removed from the product, 
        # see for the details https://github.com/influxdata/influxdata-docker/issues/48
      - INFLUXDB_ADMIN_ENABLED=true
    networks:
      - influxdb
    command: [-config, /etc/influxdb/influxdb.conf]
  chronograf:
    image: chronograf:1.0.0-rc1
    container_name: chronograf1.0.0-rc1
    ports:
      - "10000:10000" 
    volumes:
      - $PWD/conf/chronograf.conf:/etc/chronograf/chronograf.conf:ro
    networks:
      - influxdb 
    depends_on:
      - telegraf
      - influxdb
      - kapacitor
  kapacitor:
    image: kapacitor:1.2
    container_name: kapacitor1.2
    ports:
      - "9092:9092" 
    volumes:
      - $PWD/data/kapacitor:/var/lib/kapacitor
      - $PWD/conf/kapacitor.conf:/etc/kapacitor/kapacitor.conf:ro
    environment:
      - KAPACITOR_INFLUXDB_0_URLS_0=http://influxdb:8086 
    # not sure why it is necessary to provide a hostname, 
    # but it looks like Kapacitor subscribes to the InfluxDB by connecting to KAPACITOR_INFLUXDB_0_URLS_0 
    # and probably sends its own hostname on the way, so InfluxDB can communicate back
    # at least this line below is from the influxdb logs:
    # influxdb1.1.1 | [query] 2016/12/15 10:19:54 CREATE SUBSCRIPTION "kapacitor-7a54eb73-75f6-488b-9190-830f8846a1c2" ON telegraf.autogen DESTINATIONS ANY 'http://kapacitor:9092'
    hostname: kapacitor
    networks:
      - influxdb 
    depends_on:
      - telegraf
      - influxdb