unable to Access a Docker Container from Another Container

MuhammadKamal
December 27, 2022
200 views
0 votes
2 Answers

I want to access the lowerquality/gentle container into my Django container. when I run the docker-compose up command I cannot access the gentle container by localhost:49153 I can access the localhost:49153 through my laptop but cannot access it inside the Django container.

Docker-compose file


version: '3.8'

services:
  web:
    build:
      context: ./app
      dockerfile: Dockerfile.prod
    # command: gunicorn core.wsgi:application --bind 0.0.0.0:8000
    command: bash -c "python manage.py migrate && gunicorn core.wsgi:application --bind 0.0.0.0:8000"
    volumes:
      - static_volume:/usr/src/app/staticfiles
      - media_volume:/usr/src/app/media
    expose:
      - 8000
    env_file:
      - ./.env.prod
    depends_on:
      - db
    ports:
      - 8000:8000
  db:
    restart: always
    image: postgres
    volumes:
      - postgres_data:/var/lib/postgresql/data/
    env_file:
      - ./.env.prod.db

  nginx:
    build: ./nginx
    volumes:
      - static_volume:/usr/src/app/staticfiles
      - media_volume:/usr/src/app/media
    ports:
      - 80:80
    depends_on:
      - web

  # redis:
  #   image: redis
  #   ports:
  #     - '6379:6379'
  #   expose:
  #     - 6379

  djangoq:
    build: ./app
    command: python manage.py qcluster
    volumes:
      - static_volume:/usr/src/app/staticfiles
      - media_volume:/usr/src/app/media
    depends_on:
      # - redis
      - web
      - gentle
    env_file:
      - ./.env.prod
    
  gentle:
    restart: always
    image: lowerquality/gentle
    ports:
      - '49153:8765'
    expose:
      - 49153

volumes:
  postgres_data:
  static_volume:
  media_volume:

Error accessing the gentle container inside the django container.

I did change the URL path to localhost:49153 and gentle:49153 could not access

accessing from my laptop is working using localhost:49153

I did try to access using localhost:49153, gentle:49153 and gentle

How can I access gentle container inside Django container?

Answers

- EhsanRezaee
- December 27, 2022 at 10:29 am
- 0 votes
0
Containers can only communicate with each other if they share a network. Containers that don’t share a network cannot talk with one another. That’s one of the isolation features provided by Docker.

Read his link for more information.

You could add a network at the end of your docker-compose file.
```
networks:
  default:
    external:
      name: <your_network_name>
```
Note: You should create the network first.
```
docker network create <your_network_name>
```
After these changes, you can use a container or hostname of your container to connect to another container in the network.

Note: run docker ps to see container names.
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