Docker-compose works on my machine but not production

General
1

Hi Docker folks,

I have a docker-compose.yml file and it works fine in my lap (Mac OS Sierra, docker-compose version 1.12.0). However, when using it on staging (Debian jessie, docker-compose version 1.11.2, my service cannot connect to the database service.

Here is my docker-compose.yml file:

version: '2.0'

services:
  my-service:
    image: my-service:staging
    working_dir: /usr/share/my-service
    environment:
      - PGSQL_URL=postgres://postgres:postgres@db/my-service-staging
      - REDIS_URL=redis://redis:6379/0
    depends_on:
      - db
      - rabbitmq
      - redis
    links:
      - db
      - rabbitmq
      - redis
    restart:
      on-failure:5
  rabbitmq:
    image: healthcheck/rabbitmq:latest
  db:
    image: healthcheck/postgres:latest
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POSTGRES_DB=my-service-staging
  redis:
    image: redis
    volumes:
      - /var/lib/redis:/data

I try to ping db service from inside one of the running container and it works fine in my laptop. However I cannot ping db service in staging environment.
Hence, I suspect there is a network issue. However, I dont know how to debug it.

Really appreciate if anyone have any idea that I can tackle this issue.

Thank you in advance

Cheers,
Bang

2

Hi, will it work if you add hostname: db?

db:
  hostname: db
  image: healthcheck/postgres:latest
  environment:
  - POSTGRES_USER=postgres
  - POSTGRES_PASSWORD=postgres
  - POSTGRES_DB=my-service-staging