Restarting sidecar containers during Pod termination

[matthyx]

Enhancement Description

• One-line enhancement description (can be used as a release note): Allow sidecar containers to restart during the shutdown of the Pod.
• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/tree/master/keps/sig-node/4438-container-restart-termination
• Discussion Link:
• Primary contact (assignee): @matthyx
• Responsible SIGs: sig-node
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): 1.33
  • Beta release target (x.y):
  • Stable release target (x.y):
• Alpha
  • KEP (k/enhancements) update PR(s):
    • 1.30 KEP-753: introduce a second KEP and gate for restarts during pod termination #4324
    • 1.31 KEP-4438: rename gate and update milestones #4660
    • 1.32 KEP-4438: update milestones #4873
    • 1.32 KEP-4438: add missing sections #4890
    • 1.33 KEP-4438: update milestones #5098
  • Code (k/k) update PR(s):
    • WIP: Add RestartContainerDuringTermination feature kubernetes#125710
  • Docs (k/website) update PR(s):
    • Add docs for Restarting sidecar containers during Pod termination website#45170
    • Add blog post for Restarting sidecar containers during Pod termination website#45142

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

[matthyx]

/sig node

[SergeyKanzhelev]

/stage alpha
/milestone v1.30

[mrunalp]

/label lead-opted-in

[AnaMMedina21]

Hello @matthyx 👋, Enhancements team here.

Just checking in as we approach enhancements freeze on 02:00 UTC Friday 9th February 2024.

This enhancement is targeting for stage alpha for v1.30 (correct me, if otherwise)

Here's where this enhancement currently stands:

• KEP readme using the latest template has been merged into the k/enhancements repo.
• KEP status is marked as implementable for latest-milestone: v1.30. KEPs targeting stable will need to be marked as implemented after code PRs are merged and the feature gates are removed.
• KEP readme has up-to-date graduation criteria
• KEP has a production readiness review that has been completed and merged into k/enhancements. (For more information on the PRR process, check here).

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