I was wondering, Do you know of a limit on how many rootless conrainers can one run on a linux host?
Running fedora server, I have resources but once I pass about 15 containers podman starts to hang and crash.
I then need to manually delete the storage folder under ~./local/share/... for podman to work again.
It might be related to user ns keep-id flag.
The practical limit to the number of containers you can run on one system is in the high hundreds or more thousands, depending on how you configure some things, and your available hardware. It’s certainly more than you’ll even use unless you get into some auto-scaling swarm config stuff.
The issue is more about resource limits, and access to shared resources. I’d start by trying to figure out if there are certain specific containers that don’t play well together. Bring your setup online slowly, one container at a time, and take note of when things start to get funky. Then start testing combinations of those specific containers. See if there’s one you can remove from the mix that suddenly makes things more stable.