separate backup container from db node

[ilkka-ollakka]

Description

Create postgres-container as purely to run cron and take backups. Envs are defined in https://www.postgresql.org/docs/17/libpq-envars.html for pg_dump.

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• Bug Fix
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• Plumbing / Internals / Dependencies
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[mouse-reeve]

The backup script is working when I run it manually, but it seems like the cron job isn't being installed?

[ilkka-ollakka]

The backup script is working when I run it manually, but it seems like the cron job isn't being installed?

it is running as server-level crontab from /etc/cron.d/cronfile. When I changed the interval of executions/added faster interval task there jobs were executed. But I'll recheck that I didn't miss something

It doesn't log to /var/log/cron.log but to docker compose logs as the outputs are piped to stdout of cron-process.

[mouse-reeve]

I wonder if I'm missing something in how I'm testing this. My process has been:

1. Set DEBUG=false in .env
2. Open postgres-docker/cronfile and change the cron schedule to * * * * *
3. Run docker compose up --build to start the app
4. From the db-backup-job container shell, run ls backups/

I'm seeing bookwyrm-db-backup-job-1 | cron -f -L 7 once in the docker logs on startup, and no files created in the backups/ directory

[ilkka-ollakka]

That flow seems same what I use. I'll recheck if there is something that I overlooked.

[ilkka-ollakka]

I added timestamps on log-lines, but for me I first see that cron-line and after next full minute I noticed log-lines for backup being done.

for example:

db-backup-job-1   | [2026-02-09T20:48:01+00:00]backup: Database not specified, defaulting to bookwyrm
db-backup-job-1   | [2026-02-09T20:48:01+00:00]backup: Database user not specified, defaulting to bookwyrm
db-backup-job-1   | 0 files deleted
db-backup-job-1   | [2026-02-09T20:48:01+00:00]backup: completed backup of bookwyrm to /backups/backup_bookwyrm_2026-02-09.sql