I’ve been trying to dockerise my django project with postgresql but have been running into this same problem time and time again.
web_1 | CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False.
I’ve my environment variables in a .env set to:
.env:
DEBUG = True
ALLOWED_HOSTS=localhost 127.0.0.1 0.0.0.0:8000
and use the python-decouple module to configure them in settings.py
from decouple import config
DEBUG = config('DEBUG', default=False)
ALLOWED_HOSTS = config('ALLOWED_HOSTS').split(sep=' ')
Running the project:
python manage.py runserver
works perfectly fine with no errors. However, when it comes to running:
docker-compose up
I get the following output
Starting postgres_db ... done
Starting project_web_1 ... done
Attaching to postgres_db, project_web_1
postgres_db |
postgres_db | PostgreSQL Database directory appears to contain a database; Skipping initialization
postgres_db |
postgres_db | 2021-07-30 17:58:52.695 UTC [1] LOG: starting PostgreSQL 13.3 (Debian 13.3-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit
postgres_db | 2021-07-30 17:58:52.696 UTC [1] LOG: listening on IPv4 address "0.0.0.0", port 5432
postgres_db | 2021-07-30 17:58:52.696 UTC [1] LOG: listening on IPv6 address "::", port 5432
postgres_db | 2021-07-30 17:58:52.747 UTC [1] LOG: listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
postgres_db | 2021-07-30 17:58:52.887 UTC [27] LOG: database system was shut down at 2021-07-30 17:58:34 UTC
postgres_db | 2021-07-30 17:58:52.950 UTC [1] LOG: database system is ready to accept connections
web_1 | CommandError: You must set settings.ALLOWED_HOSTS if DEBUG is False.
project_web_1 exited with code 1
I’ve tried setting ALLOWED_HOSTS=['*']
and have included other hosts too, but I cannot find anything that works.
Dockerfile
FROM python:3.9
COPY . /usr/src/app
WORKDIR /usr/src/app
RUN pip install -r requirements.txt
CMD ["python3", "manage.py", "runserver", "0.0.0.0:8000"]
docker-composse.yml
version: "3.8"
services:
web:
build: .
volumes:
- .:/django
ports:
- "8000:8000"
depends_on:
- db
db:
image: postgres
volumes:
- ./data/db:/var/lib/postgresql/data
environment:
- POSTGRES_DB=postgres
- POSTGRES_USER=postgres
- POSTGRES_PASSWORD=postgres
container_name: postgres_db
2
Answers
So I found no evident solution to the problem, thus, seeing that nothing was logically incorrect, I decided to start the whole project again (beginning from a docker container) and copy over the django files that I needed. It now works like a charm.
I appreciate the people who took the time to answer. Follow https://docs.docker.com/samples/django/ as @markwalker_ suggested above.
for some weird reason it worked for me only when i started django with gunicorn and nginx idk why, i even cloned my repository somewhere else but with no effect, also i started django shell and settings was debug is False although it was hardcoded True…
this thing killed my day (: