Secondary CIDR support for CAPA-managed clusters

[sedefsavas]

We have support for providing secondary CIDRs to EKS-managed (managed) clusters.

This issue is to investigate if supporting secondary CIDRs with CAPA-managed (a.k.a unmanaged) clusters is a wanted feature.

Some discussions around this: #2065

Secondary CIDR is only relevant when AWS native CNI is being used, that CIDR block is used for pod addressing.

If the aim is to support multiple CIDRs attached to a single VPC, we can simply do that by making CIDRBlock a list in VPC spec. With multiple CIDRs, we should handle subnet creation logic.

[k8s-ci-robot]

@sedefsavas: This issue is currently awaiting triage.

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[k8s-triage-robot]

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/lifecycle stale

[sedefsavas]

The management of subnet creation on multiple CIDRs and dealing with addition/deletion of these CIDRs are complicated, we can consider supporting these through external IPAMs. IPAM proposal is merged in the core cluster-api AFAIK.

[k8s-triage-robot]

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

This bot triages issues and PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
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• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Mark this issue or PR as fresh with /remove-lifecycle rotten
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/lifecycle rotten

[k8s-triage-robot]

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

This bot triages issues and PRs 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

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/close

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue.

In response to this:

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

This bot triages issues and PRs 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:

• Reopen this issue or PR with /reopen
• Mark this issue or PR as fresh with /remove-lifecycle rotten
• Offer to help out with Issue Triage

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

/close

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