Support for Direct Service Return (DSR) and overlay networking in Windows kube-proxy

[marosset]

Enhancement Description

• One-line enhancement description (can be used as a release note): Support DSR and Overlay networking in Windows kube-proxy

• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/tree/master/keps/sig-windows/5100-windows-dsr-and-overlay-support

• Discussion Link: https://youtu.be/AqGmNKG1AHc?si=S-1kzNICabbWIfDW&t=614 (and previous community meetings)

• Primary contact (assignee): @marosset

• Responsible SIGs: Windows, Networking

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

  • Alpha release target (x.y): 1.14
  • Beta release target (x.y): 1.33
  • Stable release target (x.y):

• Alpha

• Beta

  • KEP (k/enhancements) update PR(s):
    • 5100: Adding retroactive KEP for WinDSR and WinOverlay #5112
  • Code (k/k) update PR(s):
    • Add Unit Tests for Windows DSR and Overlay Support kubernetes#130833
    • [KEP-5100] WinDSR to Beta kubernetes#130876
  • Docs (k/website) update(s):
    • Website updates for WinDSR / WinOverlay v1.33 beta website#49904

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

[marosset]

/sig windows networking
/stage beta
/milestone v1.33

[k8s-ci-robot]

@marosset: The label(s) sig/networking cannot be applied, because the repository doesn't have them.

In response to this:

/sig windows networking
/stage beta
/milestone v1.33

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.

[marosset]

WinDSR and WinOverlay feature gates were added in K8s v1.14 and were introduced without a KEP.
Both of these features gates are stable and used in many production environments.
This enhancement will add a 'retroactive' KEP for DSR and Overlay support for Windows nodes documenting what the features enable and will be used to move the feature gates to stable in upcoming releases.

[marosset]

/label lead-opted-in

[jenshu]

Hello @marosset 👋, v1.33 Enhancements team here.

Just checking in as we approach enhancements freeze on 02:00 UTC Friday 14th February 2025 / 19:00 PDT Thursday 13th February 2025.

This enhancement is targeting stage beta for v1.33 (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: v1.33.
• 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). If your production readiness review is not completed yet, please make sure to fill the production readiness questionnaire in your KEP by the PRR Freeze deadline on Thursday 6th February 2025 so that the PRR team has enough time to review your KEP.

For this KEP, we would just need to update the following:

• I see that you have a PR open with some of these updates. Please also make sure to add an approver for beta in the PRR file.

The status of this enhancement is marked as At risk for enhancements freeze. Please keep the issue description up-to-date with appropriate stages as well.

If you anticipate missing enhancements freeze, you can file an exception request in advance. Thank you!