make NodeIPAM controller support variable sized CIDRs

[pacoxu]

Enhancement Description

• One-line enhancement description (can be used as a release note): make NodeIPAM controller support variable sized CIDRs
• Kubernetes Enhancement Proposal: make NodeIPAM controller support varialble sized CIDRs #2648
• Discussion Link: support variable sized pod-CIDRs for different-sized node (was: Allow --node-cidr-mask-size to change: make NodeIPAM controller support variable sized CIDRs) kubernetes#90922 & Make NodeIPAM controller support variable sized CIDRs #1811
• Primary contact (assignee): @pacoxu
• Responsible SIGs: sig-network
• Enhancement target (which target equals to which milestone):
  • Alpha release target (x.y): 1.22
  • Beta release target (x.y):
  • Stable release target (x.y):
• Alpha
  • KEP (k/enhancements) update PR(s): make NodeIPAM controller support varialble sized CIDRs #2648
  • Code (k/k) update PR(s): old PR Fix NodeIPAM allocate overlap PodCIDR kubernetes#90926
  • Docs (k/website) update PR(s):

/cc @aojea

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

[pacoxu]

/sig network

[thockin]

I think this KEP and #2593 should merge and become one KEP. In fact, I think that #2593 is a superset of this one, from a functional point of view (but very different approach).

Can you and @rahulkjoshi please confirm and if so, merge the requirements and close one KEP (issue and PR)?

[pacoxu]

Sorry for the delay. @thockin
I will read the #2593 KEP ASAP.

[pacoxu]

/close
I will help in #2593.