Question: run crun from container?

[lukasmrtvy]

I have a hypothetical question, is possible to run crun from the container ?
My use case would be to modify container resource contrains as Podman does not have an /update endpoint as docker has.
For example:

podman run --rm -it --privileged -v /run/crun:/hostfs/run/crun alpine sh -c 'apk add crun; crun --root  /hostfs/run/crun list'

shows containers, but in stopped state.
Thanks

EDIT:
Got it working..

podman run --rm -it --privileged --pid host -v /run/crun:/hostfs/run/crun  -v /sys/fs/cgroup:/sys/fs/cgroup alpine sh -c 'apk add crun; crun --root  /hostfs/run/crun list'

[giuseppe]

hi @lukasmrtvy could you please provide more info on what you are trying to achieve and how you got it working?

FYI, new versions of Podman got a podman container update command to change cgroup resources of a running container.

[lukasmrtvy]

@giuseppe hello, I need to change -cpu-quota and --cpu-period for a running container and that's not possible in current version ( 4.2.0 ) ATTOW, see containers/podman#5763 (comment)

Can You specify which version of Podman supports podman container update command / API endpoint ? Thanks

EDIT: Got it containers/podman@050f329 , nice

[giuseppe]

4.3 will have it