docker configured with postgres uses sqlite3

With the docker image ghcr.io/linuxserver/babybuddy, usage of postgres as database does not work by setting the environment variables, babybuddy still writes data to the sqlite3 database.

I’ve previously set up babybuddy with postgres using docker-compose:

version: "2.1"
services:
  babybuddy:
    image: babybuddy/babybuddy
    environment:
      - TZ=UTC
      - DB_ENGINE=django.db.backends.postgresql
      - DB_PASSWORD=password
      - DB_HOST=db
      - DB_NAME=postgres
      - DB_PORT=5432
      - DB_USER=postgres
      - DJANGO_SETTINGS_MODULE=babybuddy.settings.docker
      - SECRET_KEY=1234
      - ALLOWED_HOSTS=*
    ports:
      - 8000:8000
    restart: unless-stopped
    command: bash -c 'sleep 5 && python manage.py migrate --noinput && python manage.py createcachetable && gunicorn babybuddy.wsgi -b :8000 --log-level=info'
  db:
    image: postgres:12
    environment:
      - PGDATA=/db-data
      - POSTGRES_PASSWORD=password
    volumes:
      - data:/db-data
volumes:
  data:

Now I’ve changed that to use the new image from linuxservers:

version: "2.1"
services:
  babybuddy:
    image: ghcr.io/linuxserver/babybuddy
    environment:
      - TZ=UTC
      - DB_ENGINE=django.db.backends.postgresql
      - DB_PASSWORD=password
      - DB_HOST=db
      - DB_NAME=postgres
      - DB_PORT=5432
      - DB_USER=postgres
    ports:
      - 8000:8000
    restart: unless-stopped
  db:
    image: postgres:12
    environment:
      - PGDATA=/db-data
      - POSTGRES_PASSWORD=password
    volumes:
      - data:/db-data
volumes:
  data:

I’ve observed that nothing is written to the postgres database:

$ docker-compose exec db /bin/bash
root@42a8ea9dd26d:/# psql -U postgres
psql (12.7 (Debian 12.7-1.pgdg100+1))
Type "help" for help.

postgres=# \c postgres
You are now connected to database "postgres" as user "postgres".
postgres=# \dt
Did not find any relations.
postgres=#

However, I’ve noticed that whenever I log on, the timestamp of the sqlite3 file /config/data/db.sqlite3 is updated.

Logs (nothing interesting):

db_1         |
db_1         | PostgreSQL Database directory appears to contain a database; Skipping initialization
db_1         |
babybuddy    | [s6-init] making user provided files available at /var/run/s6/etc...exited 0.
babybuddy    | [s6-init] ensuring user provided files have correct perms...exited 0.
babybuddy    | [fix-attrs.d] applying ownership & permissions fixes...
babybuddy    | [fix-attrs.d] done.
babybuddy    | [cont-init.d] executing container initialization scripts...
babybuddy    | [cont-init.d] 01-envfile: executing...
babybuddy    | [cont-init.d] 01-envfile: exited 0.
babybuddy    | [cont-init.d] 10-adduser: executing...
db_1         | 2021-08-05 18:43:49.005 UTC [1] LOG:  starting PostgreSQL 12.7 (Debian 12.7-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit
db_1         | 2021-08-05 18:43:49.006 UTC [1] LOG:  listening on IPv4 address "0.0.0.0", port 5432
db_1         | 2021-08-05 18:43:49.007 UTC [1] LOG:  listening on IPv6 address "::", port 5432
babybuddy    | usermod: no changes
babybuddy    |
babybuddy    | -------------------------------------
babybuddy    |           _         ()
babybuddy    |          | |  ___   _    __
babybuddy    |          | | / __| | |  /  \
babybuddy    |          | | \__ \ | | | () |
babybuddy    |          |_| |___/ |_|  \__/
babybuddy    |
babybuddy    |
babybuddy    | Brought to you by linuxserver.io
babybuddy    | -------------------------------------
babybuddy    |
babybuddy    | To support the app dev(s) visit:
babybuddy    | BabyBuddy: https://github.com/sponsors/cdubz
db_1         | 2021-08-05 18:43:49.020 UTC [1] LOG:  listening on Unix socket "/var/run/postgresql/.s.PGSQL.5432"
babybuddy    |
babybuddy    | To support LSIO projects visit:
babybuddy    | https://www.linuxserver.io/donate/
babybuddy    | -------------------------------------
babybuddy    | GID/UID
babybuddy    | -------------------------------------
babybuddy    |
babybuddy    | User uid:    911
babybuddy    | User gid:    911
babybuddy    | -------------------------------------
babybuddy    |
babybuddy    | [cont-init.d] 10-adduser: exited 0.
babybuddy    | [cont-init.d] 30-config: executing...
db_1         | 2021-08-05 18:43:49.079 UTC [25] LOG:  database system was shut down at 2021-08-05 18:27:03 UTC
db_1         | 2021-08-05 18:43:49.104 UTC [1] LOG:  database system is ready to accept connections
babybuddy    | Operations to perform:
babybuddy    |   Apply all migrations: admin, auth, authtoken, axes, babybuddy, contenttypes, core, easy_thumbnails, sessions
babybuddy    | Running migrations:
babybuddy    |   No migrations to apply.
babybuddy    |   Your models in app(s): 'babybuddy' have changes that are not yet reflected in a migration, and so won't be applied.
babybuddy    |   Run 'manage.py makemigrations' to make new migrations, and then re-run 'manage.py migrate' to apply them.
babybuddy    | Cache table 'cache_default' already exists.
babybuddy    | [cont-init.d] 30-config: exited 0.
babybuddy    | [cont-init.d] 90-custom-folders: executing...
babybuddy    | [cont-init.d] 90-custom-folders: exited 0.
babybuddy    | [cont-init.d] 99-custom-files: executing...
babybuddy    | [custom-init] no custom files found exiting...
babybuddy    | [cont-init.d] 99-custom-files: exited 0.
babybuddy    | [cont-init.d] done.
babybuddy    | [services.d] starting services
babybuddy    | [services.d] done.
babybuddy    | [2021-08-05 18:43:53 +0000] [284] [INFO] Starting gunicorn 20.1.0
babybuddy    | [2021-08-05 18:43:53 +0000] [284] [INFO] Listening at: http://0.0.0.0:8000 (284)
babybuddy    | [2021-08-05 18:43:53 +0000] [284] [INFO] Using worker: gthread
babybuddy    | [2021-08-05 18:43:53 +0000] [297] [INFO] Booting worker with pid: 297
babybuddy    | [2021-08-05 18:43:53 +0000] [298] [INFO] Booting worker with pid: 298

[Aohzan]

indeed, thanks for the tip

[cdubz]

@BenjaminHae thanks for raising. It looks like this happens because the LSIO image run file uses base.py for settings and that base settings file does not respect the DB_* environment variables. Previously this would’ve used the docker.py settings.

I think it would make sense to modify base.py to use those environment variables when present, falling back on the current SQLite based config. We could probably also get rid of the Docker specific settings file now as well.