opencontainers / opencontainers/runc
cgroupv1 has been deprecated (will be maintained until May 2029)
Open
Nobody has claimed this yet.
area/cgroupv1
- Dominant language
- Go
- Stars
- 13.5k
- Forks
- 2.3k
- Avg merge
- 2d 8h
- Merged PRs (30d)
- 30
Description
Moby maintainers agreed to officially deprecate cgroup v1, but maintain it until May 2029 at least:
So we have to keep maintaining it at least until May 2029.
The latest release in May 2029 does not necessarily need to support cgroup v1, but there should be at least one maintained branch with the support for cgroup v1.
Discussion in other projects
- https://github.com/systemd/systemd/pull/34999
- The support for cgroup v1 was disabled by default in systemd v256 (Jun 2024), and removed in systemd v258 (Sep 2025)
- https://github.com/kubernetes/enhancements/issues/5573
- https://github.com/opencontainers/runtime-spec/issues/1251
- https://github.com/containerd/containerd/issues/12443
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No file, test, or entry point is named. Start by reading Moby issue #51111 and the linked systemd, Kubernetes, OCI, and containerd discussions; done means identifying which runc branch or branches must retain cgroup v1 support through May 2029 and documenting the maintenance plan.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- go, linux
- Domain
- operating-systems
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100