For example I Use defoult settings in Django
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'database',
'USER': 'postgres',
'PASSWORD': 'postgres',
'HOST': '127.0.0.1',
'PORT': '5432',
}
When dockerize my db with
depends_on:
- db
Should I change change my 'HOST' parameter '127.0.0.1' for 'db'
could you explain this process
thank you in advance
Yes you need to change host to db. You can also use environment variables in your setting like below.
DATABASES = {
"default": {
"ENGINE": os.environ.get("SQL_ENGINE"),
"NAME": os.environ.get("SQL_DATABASE"),
"USER": os.environ.get("SQL_USER"),
"PASSWORD": os.environ.get("SQL_PASSWORD"),
"HOST": os.environ.get("SQL_HOST"),
"PORT": os.environ.get("SQL_PORT"),
}
}
and add environment variables to docker-compose or add env_file. Below is docker-compose.
services:
web:
restart: always
build:
context: ./mmd_backend
dockerfile: Dockerfile.prod
command: gunicorn mmd_backend.wsgi:application --bind 0.0.0.0:8000
volumes:
- static_volume:/home/app/web/staticfiles
- media_volume:/home/app/web/mediafiles
expose:
- 8000
env_file:
- ./.env.prod
depends_on:
- db
db:
build: ./pg12-3.0
ports:
- 5436:5432
volumes:
- postgres_data:/var/lib/postgresql/data/
env_file:
- ./.env.prod.db
nginx:
build: ./nginx
restart: always
volumes:
- static_volume:/home/app/web/staticfiles
- media_volume:/home/app/web/mediafiles
ports:
- 8000:8000
depends_on:
- web
volumes:
postgres_data:
static_volume:
media_volume:
and env file is as bellow
#.env
DEBUG=1
SECRET_KEY=7bhlblY8pY
SQL_ENGINE=django.contrib.gis.db.backends.postgis
SQL_DATABASE=db_name
SQL_USER=db_user
SQL_PASSWORD=db_password
SQL_HOST=db
SQL_PORT=5432
