You should always setup logrotate. Yes the good old Linux logrotate...
this post was submitted on 23 Feb 2025
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I don't disagree that logrotate is a sensible answer here, but making that the responsibility of the user is silly.
We should each not have to configure log rotation for every individual service. That would require identify what and how it logs data in the first place, then implementing a logrotate config. Services should include a reasonable default in logrotate.d as part of their install package.
Ideally yes, but I've had to do this regularly for many services developed both in-house and out of house.
Solve problems, and maybe share your work if you like, I think we all appreciate it.
Reminds me of when my Jellyfin container kept growing its log because of something watchtower related. Think it ended up at 100GB before I noticed. Not even debug, just failed updates I think. It's been a couple of months.
Imho it’s because docker does away with (abstracts?) many years of sane system administration principles (like managing logfile rotations) that you are used to when you deploy bare metal on a Debian box. It’s a brave new world.
Or you can use Podman, which integrates nicely with Systemd and also utilizes all the regular system means to deal with log files and so on.
It's because with docker you don't need to do log files. Logging should be to stdout, and you let the host, orchestration framework, or whoever is running the container so logs however they want to. The container should not be writing log files in the first place, containers should be immutable except for core application logic.
Everything I hear about Nextcloud scares me away from messing with it.
If you only use it for files, the only thing it's good for imho. it's awesome! :)
Feels like blaming others for not paying attention.
Persistent storage should never be used for logging in docker. Nextcloud is one of the worst offenders of breaking docker conventions I've found, this is just one of the many ways they prove they don't understand docker.
Logs should simply be logged to stdout, which will be read by docker or by a logging framework. There should never be "log files" for a container, as it should be immutable, with persistent volumes only being used for configuration or application state.
The AIO container is so terrible, like, that's not how you're supposed to use Docker.
It's unclear whether OP was using that or saner community containers, might just be the AIO one.
I have lost now not hours, but days debugging their terrible AIO container. Live production code stored in persistent volumes. Scattered files around the main drive in seemingly arbitrary locations. Environment variables that are consistently ignored/overrided. It's probably my number one example of worst docker containers and what not to do when designing your container.
101 of log files
is to configure it yourself