docker-compose.yml

version: "3.7"
services:
  #MONGO
  mongo:
    container_name: mongo
    # Tune cache size for your specific production server!
    # https://docs.mongodb.com/manual/reference/program/mongod/#wiredtiger-options
    command: --auth
    ports:
      # open localhost to allow ssh tunel for direct mongo operations
      - "127.0.0.1:27017:27017"
    volumes:
      - "/srv/mongo-4.2.3/db:/data/db"
    image: mongo:4.2.3
    networks:
      backend:
        aliases:
          - mongo
    restart: always
    deploy:
      replicas: 1
      resources:
        limits:
          memory: 500M # adjust to your needs
      restart_policy:
        condition: any
        max_attempts: 3
    logging:
      driver: "json-file"
      options:
        max-size: "10M"
        max-file: "10"
    ulimits:
      nproc: 5000
      nofile:
        soft: 10000
        hard: 40000
    healthcheck:
      test: echo 'db.runCommand("ping").ok' | mongo localhost:27017/test --quiet
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 5s


# https://docs.docker.com/compose/networking/
# https://docs.docker.com/engine/reference/run/#network-settings
# https://docs.docker.com/network/
# https://docs.docker.com/network/bridge/
networks:
  backend:
    name: backend