I want to run an application with a PostgreSQL database and a REST API powered by Django on separate Docker containers. So far the API has been running on Docker connecting to a SQLite database, but I'm having trouble now that I want to connect to a PostgreSQL database instead.
Docker's docker-compose.yml
file:
version: '2'
services:
postgres:
image: postgres
api:
build: .
command: bash -c "python manage.py migrate && python manage.py runserver 0.0.0.0:1337"
volumes:
- .:/usr/src/app
ports:
- "1337:1337"
depends_on:
- postgres
Django's settings.py
(using the default settings which the base postgres
image works with according to the documentation):
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'wgomanager',
'USER': 'postgres',
'PASSWORD': 'mysecretpassword',
'HOST': 'localhost',
'PORT': '5432',
}
}
When I launch the application with docker-compose up
eventually this error is thrown:
api_1 | connection = Database.connect(**conn_params)
api_1 | File "/usr/local/lib/python3.6/site-packages/psycopg2/__init__.py", line 130, in connect
api_1 | conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
api_1 | django.db.utils.OperationalError: could not connect to server: Connection refused
api_1 | Is the server running on host "localhost" (::1) and accepting
api_1 | TCP/IP connections on port 5432?
api_1 | could not connect to server: Connection refused
api_1 | Is the server running on host "localhost" (127.0.0.1) and accepting
api_1 | TCP/IP connections on port 5432?
api_1 |
orchestrator_api_1 exited with code 1
What am I doing wrong?
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