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concourse worker does not support cgroup v2 #5080

drahnr opened this issue Jan 29, 2020 · 1 comment

concourse worker does not support cgroup v2 #5080

drahnr opened this issue Jan 29, 2020 · 1 comment


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@drahnr drahnr commented Jan 29, 2020

Bug Report

v2 linux namespaces are not compatible with concourse worker

Steps to Reproduce

Use a linux distribution which switched to namespaces v2.Try to run concourse. All containers (checks, tasks, ... ) fail to spawn.
See also:

Expected Results

Either be warned about the issue or just work as per usual :)

Actual Results

Failing checks

Additional Context

Reproducible with Fedora 31 which changed the default namespaces from v1 to v2 .

Version Info

  • Concourse version: concourse 5.7.2
  • Deployment type (BOSH/Docker/binary): binary/worker, docker/web
  • Infrastructure/IaaS: Fedora 31
  • Browser (if applicable): firefox
  • Did this used to work? before there was a v2 namespace impl, yes
@drahnr drahnr added the bug label Jan 29, 2020

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@cirocosta cirocosta commented Jan 30, 2020

Hey @drahnr, thanks for reportting!

indeed, that's not something that the workers can deal with at the moment,
buuut, we have an ongoing track to leverage contanerd directly
(, which, is
almost there to be able to completely leverage cgroupv2:

in the mean time, it seems like we could at least let folks know how to get
around that in systems (like fedora) that are comming with cgroupv2 enabled by


if so, do you have any good sources that we could points folks to to have
cgroupv1 rather than 2? thinking about a possible documentation snippet.


@cirocosta cirocosta changed the title concourse worker cgroup already mounted with v2 namespaces concourse worker does not support cgroup v2 Jan 30, 2020
@cirocosta cirocosta added this to To do in containerd workers via automation Jan 30, 2020
@cirocosta cirocosta moved this from To do to End goals in containerd workers Jan 30, 2020
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