Reflect PreEnqueue rejections in pod status

[macsko]

Enhancement Description

• One-line enhancement description (can be used as a release note): Updates the pod's status with a clear message when a PreEnqueue plugin rejects it
• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/blob/master/keps/sig-scheduling/5501-reflect-preenqueue-rejections-in-pod-status/README.md
• Discussion Link: scheduler: output PreEnqueue failures to users kubernetes#130668
• PRs by stage and milestone:
• Beta - v1.35
  • KEP (k/enhancements) update PR(s): KEP-5501: Reflect PreEnqueue rejections in Pod status #5510
  • Code (k/k) update PR(s):
  • Docs (k/website) update(s): WIP: KEP-5501: Add SchedulerPreEnqueuePodStatus feature gate docs website#52863

Please keep this description up to date. This will help the Enhancement Team to track the evolution of the enhancement efficiently.

[rayandas]

Hi @macsko 👋, v1.35 Enhancements Lead here.

It looks like this enhancement has been added to the v1.35 milestone, but doesn't yet have the lead-opted-in label. Just a gentle reminder that if you plan to work on this enhancement in v1.35, please have the SIG lead opt-in by adding the lead-opted-in label, which will ensure it gets added to the tracking board.

Thanks!

[rayandas]

Hello @macsko 👋, v1.35 Enhancements team here.

This is a reminder of the upcoming PRR freeze on Thursday 9th October 2025 (AoE) / Friday 10th October 2025, 12:00 UTC.

This enhancement is targeting stage Beta for v1.35 (correct me, if otherwise)

Here's where this enhancement currently stands:

• PR open or merged with the KEP's PRR questionnaire filled out.
• PR open or merged with kep.yaml updated with the stage, latest-milestone, and milestone struct filled out.
• PR open or merged with a PRR approval file with the PRR approver listed for the stage the KEP is targeting.

Note that the PRs are not required to be approved or merged by the PRR freeze deadline. Having the PRR questionnaire filled out by the deadline will help ensure that the PRR team has enough time to review your KEP before enhancements freeze on Thursday 16th October 2025 (AoE) / Friday 17th October 2025, 12:00 UTC. For more information on the PRR process, see here.

With all the PRR freeze requirements in place, this enhancement is now marked as Tracked for PRR freeze! Please keep the issue description up-to-date with appropriate stages as well.

/label tracked/yes