kubeadm: customization with patches

[neolit123]

Enhancement Description

• One-line enhancement description (can be used as a release note):
  Introduce customization of kubeadm managed manifests using patches
• Kubernetes Enhancement Proposal: (link to kubernetes/enhancements file, if none yet, link to PR): https://github.com/kubernetes/enhancements/tree/master/keps/sig-cluster-lifecycle/kubeadm/1739-customization-with-patches
• Primary contact (assignee): @neolit123
• Responsible SIGs: SIG Cluster Lifecycle
• Enhancement target (which target equals to which milestone):
  • Alpha release target 1.19
  • Beta release target 1.22
  • Stable release target TODO

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

kubeadm tracking issue:
kubernetes/kubeadm#2046

this feature replaces and existing feature added with this KEP:
https://github.com/kubernetes/enhancements/blob/master/keps/sig-cluster-lifecycle/kubeadm/20190722-Advanced-configurations-with-kubeadm-(Kustomize).md

[palnabarun]

Hey @neolit123 -- 1.19 Enhancements Lead here. I wanted to check in and see if you think this Enhancement will be graduating to Alpha in 1.19?

In order to have this part of the release:

1. The KEP PR must be merged in an implementable state
2. The KEP must have test plans
3. The KEP must have graduation criteria.

---

The current release schedule is:

• Monday, April 13: Week 1 - Release cycle begins
• Tuesday, May 19: Week 6 - Enhancements Freeze
• Thursday, June 25: Week 11 - Code Freeze
• Thursday, July 9: Week 14 - Docs must be completed and reviewed
• Tuesday, August 4: Week 17 - Kubernetes v1.19.0 released

[neolit123]

hi, yes the feature is planned as alpha for 1.19.
the KEP in #1742 should merge as "implementable" before the 19th.

[palnabarun]

@neolit123 Awesome! 🎆 Thank you for the update.

I am going ahead and updating the tracking sheet accordingly.

PS: Until the PR gets merged, I'm marking the enhancement At Risk. Once, the PR gets merged, I would update the status.

[palnabarun]

/stage alpha
/milestone v1.19

[neolit123]

@palnabarun

PS: Until the PR gets merged, I'm marking the enhancement At Risk. Once, the PR gets merged, I would update the status.

hi, the KEP merged as "implementable":
#1742
https://github.com/kubernetes/enhancements/pull/1742/files#diff-43d8c9f7a843e756c4e752fd1f7fbe44R8

[palnabarun]

@neolit123 -- Thanks for the ping. I have updated the tracking sheet. 👍

[palnabarun]

PS: I have updated the issue description with the link to the KEP.