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Kops - Enable Prefix Delegation for Cilium ENI jobs - #36983

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rifelpet:eni-pd
May 8, 2026
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k8s-ci-robot merged 2 commits into
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@rifelpet

@rifelpet rifelpet commented May 8, 2026

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Followup to kubernetes/kops#18285

Mirror AMAZON_VPC_ENV_FLAGS for cilium-eni: without prefix delegation a t3.large only gets ~33 secondary IPs and e2e jobs flake on pod-IP exhaustion at --parallel=25.

cluster.spec.networking.cilium.extraConfig was added to kops in kubernetes/kops#18285 and backported to 1.35/1.34, so exclude 1.32/1.33.

The network-plugins periodic and presubmit sites are master-only and need no gate.

/cc @hakman

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rifelpet added 2 commits May 8, 2026 10:28
Mirror AMAZON_VPC_ENV_FLAGS for cilium-eni: without prefix delegation a
t3.large only gets ~33 secondary IPs and e2e jobs flake on pod-IP
exhaustion at --parallel=25. cluster.spec.networking.cilium.extraConfig
was added to kops master and is being backported to 1.35/1.34, so gate
the new flags off kops 1.32/1.33 in the grid loop. The network-plugins
periodic and presubmit sites are master-only and need no gate.
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k8s-ci-robot requested a review from hakman May 8, 2026 15:31
@k8s-ci-robot k8s-ci-robot added area/config Issues or PRs related to code in /config size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. area/jobs sig/cluster-lifecycle Categorizes an issue or PR as relevant to SIG Cluster Lifecycle. labels May 8, 2026
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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: rifelpet

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@k8s-ci-robot k8s-ci-robot added sig/testing Categorizes an issue or PR as relevant to SIG Testing. approved Indicates a PR has been approved by an approver from all required OWNERS files. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. labels May 8, 2026
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hakman commented May 8, 2026

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/lgtm

@k8s-ci-robot k8s-ci-robot added the lgtm "Looks good to me", indicates that a PR is ready to be merged. label May 8, 2026
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k8s-ci-robot merged commit 7ea9c6d into kubernetes:master May 8, 2026
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@rifelpet: Updated the job-config configmap in namespace default at cluster test-infra-trusted using the following files:

  • key kops-periodics-grid.yaml using file config/jobs/kubernetes/kops/kops-periodics-grid.yaml
  • key kops-periodics-network-plugins.yaml using file config/jobs/kubernetes/kops/kops-periodics-network-plugins.yaml
  • key kops-presubmits-network-plugins.yaml using file config/jobs/kubernetes/kops/kops-presubmits-network-plugins.yaml
Details

In response to this:

Followup to kubernetes/kops#18285

Mirror AMAZON_VPC_ENV_FLAGS for cilium-eni: without prefix delegation a t3.large only gets ~33 secondary IPs and e2e jobs flake on pod-IP exhaustion at --parallel=25.

cluster.spec.networking.cilium.extraConfig was added to kops in kubernetes/kops#18285 and backported to 1.35/1.34, so exclude 1.32/1.33.

The network-plugins periodic and presubmit sites are master-only and need no gate.

/cc @hakman

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approved Indicates a PR has been approved by an approver from all required OWNERS files. area/config Issues or PRs related to code in /config area/jobs cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. lgtm "Looks good to me", indicates that a PR is ready to be merged. sig/cluster-lifecycle Categorizes an issue or PR as relevant to SIG Cluster Lifecycle. sig/testing Categorizes an issue or PR as relevant to SIG Testing. size/XL Denotes a PR that changes 500-999 lines, ignoring generated files.

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