IPAM support for CAPO

[geetikabatra]

/kind feature
Umbrella issue for all tasks required to implement IPAM support for CAPO
This issue will be updated over time

• IPAM Contract implementation - ✨ Add IPAddress and IPAddressClaim CRs to Experimental API cluster-api#6313

Describe the solution you'd like
[A clear and concise description of what you want to happen.]

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

[k8s-triage-robot]

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

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/lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough active 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 rotten
• Close this issue with /close
• Offer to help out with Issue Triage

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

/lifecycle rotten

[hiromu-a5a]

Hi, I am interested in this feature. Is there any roadmap for the implementation?

[mdbooth]

There is not, but I am also interested in it.

Out of curiosity, what is your use case? Why is this better than DHCP in your circumstances?

[huxcrux]

I could se this being used to manage public IPs. I currently looking into the possibility of having a list(or range) of public IP-addresses that could be assigned to workers. The reasons for this is to have a known source IP on each worker allowing for whitelisting at a 3rd party.

I'm willing looking into implementing the IPAM API however it would be good to know what use cases others have.

/remove-lifecycle rotten

[hiromu-a5a]

Sorry for the delayed response.
For some historical reasons, our environment uses many fixed IPs, and IPs are used to connect services that are geographically isolated. We need to be aware of which IPs are used in which machines and by which services. DHCP is not enough to cover this use case.

[mdbooth]

Example use in CAPV: https://github.com/kubernetes-sigs/cluster-api-provider-vsphere/blob/a5feda0b204f3351da0c16ba8cde82921d434025/apis/v1beta1/types.go#L321-L325

[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

[mdbooth]

Tracked in #1750