Add storage capacity scoring

[cupnes]

Enhancement Description

• One-line enhancement description (can be used as a release note): Storage Capacity Scoring of Nodes for Dynamic Provisioning
• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/blob/master/keps/sig-storage/4049-storage-capacity-scoring-of-nodes-for-dynamic-provisioning/README.md
• Discussion Link:
  • ML(sig-storage): https://groups.google.com/g/kubernetes-sig-storage/c/RQHvFvG6pPY/m/wFoLU61bAwAJ
  • Slack(#sig-storage): https://kubernetes.slack.com/archives/C09QZFCE5/p1685002022790859
• Primary contact (assignee): @cupnes
• Responsible SIGs: sig-storage
• 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):
    • KEP-4049: Add storage capacity scoring KEP #4042
    • KEP-4049: Update KEP readme #5132
  • Code (k/k) update PR(s):
    • KEP-4049: Add storage capacity scoring to VolumeBinding plugin kubernetes#128184
  • Docs (k/website) update PR(s):
    • KEP-4049: Add StorageCapacityScoring feature gate documents website#49801
    • KEP-4049: Add blog for StorageCapacityScoring feature website#49992

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

[cupnes]

/sig storage

[xing-yang]

Confirmed with @cupnes that this feature is not targeting alpha in 1.28.

[k8s-triage-robot]

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

This bot triages un-triaged issues 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 as fresh with /remove-lifecycle stale
• Close this issue with /close
• Offer to help out with Issue Triage

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

/lifecycle stale

[cupnes]

The is under review at #4042.
/remove-lifecycle stale

[k8s-triage-robot]

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

This bot triages un-triaged issues 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 as fresh with /remove-lifecycle stale
• Close this issue with /close
• Offer to help out with Issue Triage

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

/lifecycle stale

[cupnes]

/remove-lifecycle stale

[k8s-triage-robot]

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

This bot triages un-triaged issues 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 as fresh with /remove-lifecycle stale
• Close this issue with /close
• Offer to help out with Issue Triage

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

/lifecycle stale

[xing-yang]

/remove-lifecycle stale

[xing-yang]

/milestone v1.32

[xing-yang]

@cupnes I added the labels.

[lzung]

Hello @cupnes 👋, 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 alpha 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:

• Can you please update your KEP readme to use the latest template, and make sure to fill out all required sections?
• It is missing the Risks and Mitigations section after Notes/Constraints/Caveats

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!

[dipesh-rawat]

Hi @cupnes 👋, 1.33 Enhancements team here,

Just a quick friendly reminder as we approach the enhancements freeze later this week, at 02:00 UTC Friday 14th February 2025 / 19:00 PDT Thursday 13th February 2025.

The current status of this enhancement is marked as At risk for enhancement freeze. There are a few requirements mentioned in the comment #4049 (comment) that still need to be completed.

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

[dipesh-rawat]

Hello @cupnes 👋, 1.33 Enhancements team here.

Now that PR #5132 has been merged, all the KEP requirements are in place and merged into k/enhancements.

Before the enhancement freeze, it would be appreciated if following nit could be addressed:

• Update issue description to add the PR KEP-4049: Update KEP readme #5132 in Alpha section.

  • Alpha
    • KEP (k/enhancements) update PR(s): KEP-4049: Update KEP readme #5132

Aside from the minor nit mentioned above, this enhancement is all good for the upcoming enhancements freeze. 🚀

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

/label tracked/yes

[cupnes]

@dipesh-rawat
Thank you! I updated issue description.

[Urvashi0109]

Hello @cupnes 👋, v1.33 Docs Shadow here.

Does this enhancement work planned for v1.33 require any new docs or modification to existing docs?

If so, please follow the steps here to open a PR against dev-1.33 branch in the k/website repo. This PR can be just a placeholder at this time and must be created before Thursday 27th February 2025 18:00 PDT.

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

Thank you!

[cupnes]

@Urvashi0109
I addressed it. (PR)

[rytswd]

Hi @cupnes 👋 -- this is Ryota (@rytswd) from the 1.33 Communications Team!

For the 1.33 release, we are currently in the process of collecting and curating a list of potential feature blogs, and we'd love for you to consider writing one for your enhancement!

As you may be aware, feature blogs are a great way to communicate to users about features which fall into (but not limited to) the following categories:

• This introduces some breaking change(s)
• This has significant impacts and/or implications to users
• ...Or this is a long-awaited feature, which would go a long way to cover the journey more in detail 🎉

To opt in to write a feature blog, could you please let us know and open a "Feature Blog placeholder PR" (which can be only a skeleton at first) against the website repository by Wednesday, 5th March, 2025? For more information about writing a blog, please find the blog contribution guidelines 📚

Tip

Some timeline to keep in mind:

• 02:00 UTC Wednesday, 5th March, 2025: Feature blog PR freeze
• Monday, 7th April, 2025: Feature blogs ready for review
• You can find more in the release document

Note

In your placeholder PR, use XX characters for the blog date in the front matter and file name. We will work with you on updating the PR with the publication date once we have a final number of feature blogs for this release.

[rytswd]

Hi @cupnes 👋, 1.33 Communications Team here again!

This is a gentle reminder for the feature blog deadline mentioned above, which is 02:00 UTC Wednesday, 5th March, 2025. To opt in, please let us know and open a Feature Blog placeholder PR against k/website by the deadline. If you have any questions, please feel free to reach out to us!

Tip

Some timeline to keep in mind:

• 02:00 UTC Wednesday, 5th March, 2025: Feature blog PR freeze
• Monday, 7th April, 2025: Feature blogs ready for review
• You can find more in the release document

Note

In your placeholder PR, use XX characters for the blog date in the front matter and file name. We will work with you on updating the PR with the publication date once we have a final number of feature blogs for this release.

[lzung]

Hey again @cupnes 👋, 1.33 Enhancements team here,

Just checking in as we approach code freeze at 02:00 UTC Friday 21st March 2025 / 19:00 PDT Thursday 20th March 2025. .

Here's where this enhancement currently stands:

• All PRs to the Kubernetes repo that are related to your enhancement are linked in the above issue description (for tracking purposes).
• All PRs are ready to be merged (they have approved and lgtm labels applied) by the code freeze deadline. This includes tests.

For this enhancement, it looks like the following PR needs to be merged before code freeze (and we need to update the Issue description to include all the related PRs of this KEP):

• KEP-4049: Add storage capacity scoring to VolumeBinding plugin kubernetes#128184

Additionally, please let me know if there are any other PRs in k/k not listed above that we should track for this KEP, so that we can maintain accurate status.

If you anticipate missing code freeze, you can file an exception request in advance.

The status of this enhancement is marked as at risk for code freeze.

[cupnes]

@rytswd
Thank you. I opened a placeholder PR.
kubernetes/website#49992

[rytswd]

Thanks @cupnes! I have associated the placeholder PR with this KEP under the Enhancement project board 👍

[dipesh-rawat]

Hi @cupnes 👋, v1.33 Enhancements team here,

Just a quick friendly reminder as we approach the code freeze later this week, at 02:00 UTC Friday 21st March 2025 / 19:00 PDT Thursday 20th March 2025.

The current status of this enhancement is marked as At risk for code freeze. There are a few requirements mentioned in the comment #4049 (comment) that still need to be completed.

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

[dipesh-rawat]

@cupnes Now that all the implementation(code related) PRs merged as per the issue description:

• KEP-4049: Add storage capacity scoring to VolumeBinding plugin kubernetes#128184

This enhancement is now marked as tracked for code freeze for the v1.33 Code Freeze!

Also, please let us know if anything changes before the freeze or if there are any other PRs in k/k we should track for this KEP to keep the status accurate.