Re: [HTCondor-users] cgroups2 aka unified cgroups

[Greg Thain <gthain@xxxxxxxxxxx>]

On 1/28/20 2:57 AM, Bert DeKnuydt wrote:
> Hi Condorants,
>
> Since Fedora 31, by default, cgroups2 "unified cgroups" are used. It's 
> much nicer interface
> compared to the old cgroups; (old is relative: cgroups2 dates from 2014).
>
>
> ---
>
> Currently, the workaround I know of, is to boot with flags 
> 'systemd.unified_cgroup_hierarchy=0',
> but that is not really nice, and will break other container stuff.
>
> Are there any plans/WIP to add code for cgroups2? Better workarounds / 
> tricks?


Booting the kernel with the old cgroup code is what we recommend for 
now. Another workaround would be to disable cgroup usage in condor by 
unsetting BASE_CGROUP, which we'd only recommend if you are only running 
docker universe jobs, or are otherwise contained.


-greg