version: '2'
services:
  mongodb:
    image: mongo:3
    volumes:
      - mongo_data:/data/db
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.8.4
    volumes:
      - elasticsearch_data:/usr/share/elasticsearch/data
    environment:
      - http.host=0.0.0.0
      - transport.host=localhost
      - network.host=0.0.0.0
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
    mem_limit: 2g
  graylog:
    image: graylog/graylog:3.1.2
    volumes:
      # Mount local configuration directory into Docker container
      - ./config:/usr/share/graylog/data/config
      - graylog_journal:/usr/share/graylog/data/journal
    environment:
      - TZ=Europe/Moscow
      # - GRAYLOG_ROOT_PASSWORD_SHA2=f266937560dbe019168c2cd60e3bab059f9322a24ead6783f13858d1f2de2ecf
      # - GRAYLOG_HTTP_EXTERNAL_URI=http://0.0.0.0:9000/
      # - GRAYLOG_HTTP_PUBLISH_URI=http://0.0.0.0:9000/
    links:
      - mongodb:mongo
      - elasticsearch
    depends_on:
      - mongodb
      - elasticsearch
    ports:
      # Graylog web interface and REST API
      - 9000:9000
      # Syslog TCP
      - 1514:1514
      # Syslog UDP
      - 1514:1514/udp
      # GELF TCP
      - 12201:12201
      # GELF UDP
      - 12201:12201/udp

# Volumes for persisting data, see https://docs.docker.com/engine/admin/volumes/volumes/
volumes:
  mongo_data:
    driver: local
  elasticsearch_data:
    driver: local
  graylog_journal:
    driver: local