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edited Dec 5, 2019 at 15:51

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I'm trying to connect from a node app container to a postgresql container using docker-compose but I'm not able to do it. This is my docker-compose.yml file: version: '3.7' services: db: image: postgres:12.1 ports: - "5432:5432" env_file: - "./.env" networks: - tcp-modbus volumes: - ./modbustcp.sql:/docker-entrypoint-initdb.d/init.sql redis: image: redis:5.0.6 ports: - "6379:6379" networks: - tcp-modbus rabbit: image: "rabbitmq" environment: RABBITMQ_ERLANG_COOKIE: "SWQOKODSQALRPCLNMEQG" RABBITMQ_DEFAULT_USER: "*" RABBITMQ_DEFAULT_PASS: "*" RABBITMQ_DEFAULT_VHOST: "/" ports: - "15672:15672" - "5672:5672" volumes: - "./enabled_plugins:/etc/rabbitmq/enabled_plugins" networks: - tcp-modbus modbus-tcp: image: customImage ports: - "8080:3000" links: - "db" volumes: - "./modbus.env:/usr/src/app/.env" networks: - tcp-modbus networks: tcp-modbus: driver: bridge

version: '3.7'
services:
  db:
    image: postgres:12.1
    ports:
      - "5432:5432"
    env_file:
      - "./.env"
    networks:
      - tcp-modbus
    volumes:
      - ./modbustcp.sql:/docker-entrypoint-initdb.d/init.sql
  redis:
    image: redis:5.0.6
    ports:
      - "6379:6379"
    networks:
      - tcp-modbus
  rabbit:
    image: "rabbitmq"
    environment:
      RABBITMQ_ERLANG_COOKIE: "SWQOKODSQALRPCLNMEQG"
      RABBITMQ_DEFAULT_USER: "*"
      RABBITMQ_DEFAULT_PASS: "*"
      RABBITMQ_DEFAULT_VHOST: "/"
    ports:
    - "15672:15672"
    - "5672:5672"
    volumes:
      - "./enabled_plugins:/etc/rabbitmq/enabled_plugins"
    networks:
      - tcp-modbus
  modbus-tcp:
    image: customImage
    ports:
      - "8080:3000"
    links:
      - "db"
    volumes:
      - "./modbus.env:/usr/src/app/.env"
    networks:
      - tcp-modbus
networks:
  tcp-modbus:
    driver: bridge

I'm trying to connect from a node app container to a postgresql container using docker-compose but I'm not able to do it. This is my docker-compose.yml file:

version: '3.7'
services:
  db:
    image: postgres:12.1
    ports:
      - "5432:5432"
    env_file:
      - "./.env"
    networks:
      - tcp-modbus
    volumes:
      - ./modbustcp.sql:/docker-entrypoint-initdb.d/init.sql
  redis:
    image: redis:5.0.6
    ports:
      - "6379:6379"
    networks:
      - tcp-modbus
  rabbit:
    image: "rabbitmq"
    environment:
      RABBITMQ_ERLANG_COOKIE: "SWQOKODSQALRPCLNMEQG"
      RABBITMQ_DEFAULT_USER: "*"
      RABBITMQ_DEFAULT_PASS: "*"
      RABBITMQ_DEFAULT_VHOST: "/"
    ports:
    - "15672:15672"
    - "5672:5672"
    volumes:
      - "./enabled_plugins:/etc/rabbitmq/enabled_plugins"
    networks:
      - tcp-modbus
  modbus-tcp:
    image: customImage
    ports:
      - "8080:3000"
    links:
      - "db"
    volumes:
      - "./modbus.env:/usr/src/app/.env"
    networks:
      - tcp-modbus
networks:
  tcp-modbus:
    driver: bridge

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asked Dec 5, 2019 at 15:31

Alessandro Rodríguez

How to connect to postgres container from a node container using docker-compose?

I'm using typeorm to set the connection from the node app and was working fine before dockerizing the app, maybe has something to do with the host name of the container, cause I'm using localhost to connect to the postgresql container. Can I use somehow the container network as a hostname to connect to postgres?