Namespace selector for pod affinity

[ahg-g]

Enhancement Description

• One-line enhancement description (can be used as a release note): Add namespaceSelector to pod affinity/anti-affinity spec

• Kubernetes Enhancement Proposal: WIP

• Discussion Link: Add NamespaceSelector to pod affinity spec kubernetes#97203, Configure pod anti-affinity across all namespaces kubernetes#68827

• Primary contact (assignee): ahg-g

• Responsible SIGs: sig-scheduling

• Enhancement target (which target equals to which milestone):

  • Alpha release target (1.21):
  • Beta release target (1.22):
  • Stable release target (1.24):

• Alpha

  • KEP (k/enhancements) update PR(s): Add KEP for Pod Affinity NamespaceSelector #2251
  • Code (k/k) update PR(s): Add PodAffinityTerm.NamespaceSelector and CrossNamespacePodAffinity Quota scope APIs kubernetes#98378, Implements NamespaceSelector for pod affinity kubernetes#98446, Implements CrossNamespacePodAffinity quota scope kubernetes#98582
  • Docs (k/website) update PR(s): Document Pod affinity namespaceSelector website#26820

• Beta

  • KEP (k/enhancements) update PR(s): graduate pod affinity namespaceselector to beta #2650
  • Code (k/k) update PR(s): Graduate pod affinity NamespaceSelector to Beta kubernetes#101496
  • Docs (k/website) update(s): Pod affinity namespaceSelector to beta website#28416

• Stable

  • KEP (k/enhancements) update PR(s): KEP-2249: Graduate PodAffinityNamespaceSelector to stable #3116
  • Code (k/k) update PR(s): Graduate PodAffinityNamespaceSelector to GA kubernetes#108136
  • Docs (k/website) update(s): Pod affinity namespaceSelector to GA website#32352

[ahg-g]

/sig scheduling

[kendallroden]

Hi @ahg-g ,
Since your Enhancement is scheduled to be in 1.21, please keep in mind the important upcoming dates:

• Tuesday, March 9th: Week 9 - Code Freeze
• Tuesday, March 16th: Week 10 - Docs Placeholder PR deadline
  • If this enhancement requires new docs or modification to existing docs, please follow the steps in the Open a placeholder PR doc to open a PR against k/website repo.
• As a reminder, please link all of your k/k PR(s) and k/website PR(s) to this issue so we can track them.

Thanks!

[ahg-g]

Implementation is merged, only docs PR is pending.

[kendallroden]

Hey @ahg-g! Looks like you are all merged and good to go for the upcoming Code Freeze! Thanks for the updates and the hard work :D

[ahg-g]

/stage beta
/milestone v1.22

[JamesLaverack]

Hey @ahg-g, 1.22 Enhancements Lead here.

This enhancement looks in pretty good shape for 1.22, but I have one minor change to request:

• Can you update the latest-milestone field in your kep.yaml to be "v.122".

Thanks!

[shay-berman]

Any update about this feature and in which k8s it will be available?

[ahg-g]

please refer to the docs https://kubernetes.io/docs/concepts/scheduling-eviction/assign-pod-node/#namespace-selector

[ahg-g]

/milestone v1.24

[Priyankasaggu11929]

Hello @ahg-g 👋, 1.24 Enhancements team here.

Just checking in as we approach enhancements freeze on 18:00pm PT on Thursday Feb 3rd, 2022.

For note, This enhancement is targeting for stage stable for 1.24 (correct me, if otherwise)

Here’s where this enhancement currently stands:

• Updated KEP file using the latest template has been merged into the k/enhancements repo.
• KEP status is marked as implementable for this release
• KEP has a test plan section filled out.
• KEP has up to date graduation criteria.
• KEP has a production readiness review that has been completed and merged into k/enhancements.

With all the KEP requirements in place & merged into k/enhancements, this enhancement is all good for the upcoming enhancements freeze. 🚀

For note, the status of this enhancement is marked as tracked. Please keep the issue description up-to-date with appropriate stages as well. Thank you!

[PI-Victor]

Hi @ahg-g 👋 1.24 Docs shadow here.

This enhancement is marked as Needs Docs for the 1.24 release.

Please follow the steps detailed in the documentation to open a PR against the dev-1.24 branch in the k/website repo. This PR can be just a placeholder at this time and must be created before Thursday 31st March 2022, 18:00 PDT.

Also, if needed take a look at Documenting for a release to familiarize yourself with the docs requirement for the release.

Thanks!

[Priyankasaggu11929]

Hello @ahg-g 👋

I'm just checking in once more as we approach the 1.24 Code Freeze on 18:00 PDT, Tuesday, March 29th 2022

Please ensure the following items are completed:

• All PRs to the Kubernetes repo that are related to your enhancement are merged by the code freeze deadline.
  • Graduate PodAffinityNamespaceSelector to GA kubernetes#108136
• Have a documentation placeholder PR open by 18:00 PDT, Thursday, March 31, 2022.

For note, the status of this enhancement is currently marked as at risk.

Kindly please let me know if I'm missing any open PRs other than the ones I linked above. Thank you so much!

[ahg-g]

Docs PR: kubernetes/website#32352

[Priyankasaggu11929]

Thanks @ahg-g . With the Docs PR open now, all the requirements for Code Freeze are completed. The status of this enhancement is tracked now.

[Priyankasaggu11929]

Hello @ahg-g 👋, 1.25 Enhancements team here.

This feature has been fully implemented and is now GA in K8s version 1.24. 🎉

Please update the kep.yaml file's status to implemented and close this issue.

This would help accurate tracking in the v1.25 cycle. Thank you so much! 🙂

[k8s-triage-robot]

The Kubernetes project currently lacks enough contributors to adequately respond to all issues and PRs.

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Mark this issue or PR as fresh with /remove-lifecycle stale
• Mark this issue or PR as rotten with /lifecycle rotten
• Close this issue or PR with /close
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle stale

[ahg-g]

Graduated to GA