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Update NPEP-133 with Admin-tier restriction and DNS security guidance#366

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kubernetes-sigs:mainfrom
tssurya:fqdn-field-description-update
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Update NPEP-133 with Admin-tier restriction and DNS security guidance#366
tssurya wants to merge 1 commit into
kubernetes-sigs:mainfrom
tssurya:fqdn-field-description-update

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@tssurya
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@tssurya tssurya commented Apr 5, 2026

The PR updates the details around domainNames
as discussed in KubeCon Atlanta:
https://docs.google.com/document/d/1AtWQy2fNa4qXRag9cCp5_HsefD7bxKe3ea2RPn8jnSs/edit?tab=t.k47ujuef4zxk#bookmark=id.hl0pbdvwfotd

  • Restrict domainNames to Admin tier only with CEL validation (Baseline tier breaks the NetworkPolicy override model)
  • Add CEL validation for Accept-only action restriction
  • Update API examples to v1alpha2 ClusterNetworkPolicy format
  • Add Expected Behavior points for DNS reachability and resolv.conf
  • Add Recommended Behavior section covering DNS security concerns, grace period, and DNSSEC best practice
  • Add Connection Lifecycle section for policy add/remove semantics

NOTE to reviewers:

  • I didn't update the field description because I wasn't sure what all is worth capturing in the field v/s not, so happy to change that aspect during reviews
  • * can mean one or more labels and that's what is present in current OKEP as well

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: tssurya

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@k8s-ci-robot k8s-ci-robot requested review from aojea and danwinship April 5, 2026 17:05
@k8s-ci-robot k8s-ci-robot added approved Indicates a PR has been approved by an approver from all required OWNERS files. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. cncf-cla: yes Indicates the PR's author has signed the CNCF CLA. labels Apr 5, 2026
Comment thread npeps/npep-133-fqdn-egress-selector.md Outdated
Comment thread npeps/npep-133-fqdn-egress-selector.md Outdated
Comment thread npeps/npep-133-fqdn-egress-selector.md
Comment thread npeps/npep-133-fqdn-egress-selector.md
Comment thread npeps/npep-133-fqdn-egress-selector.md Outdated
@k8s-ci-robot k8s-ci-robot added the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label Apr 9, 2026
@tssurya tssurya force-pushed the fqdn-field-description-update branch from b8a2a6c to 2af60be Compare May 5, 2026 07:30
@k8s-ci-robot k8s-ci-robot removed the needs-rebase Indicates a PR cannot be merged because it has merge conflicts with HEAD. label May 5, 2026
@tssurya tssurya changed the title Update NPEP-133 with Admin-tier restriction, DNS security guidance, and v1alpha2 API Update NPEP-133 with Admin-tier restriction and DNS security guidance Jun 2, 2026
…nd CEL

The PR updates the details around domainNames
as discussed in KubeCon Atlanta:
https://docs.google.com/document/d/1AtWQy2fNa4qXRag9cCp5_HsefD7bxKe3ea2RPn8jnSs/edit?tab=t.k47ujuef4zxk#bookmark=id.hl0pbdvwfotd

- Add CEL validation for Accept-only action restriction
- Update API examples to v1alpha2 ClusterNetworkPolicy format
- Add Expected Behavior points for DNS reachability and resolv.conf
- Add Recommended Behavior section covering DNS security concerns,
  grace period, and DNSSEC best practice
- Add Connection Lifecycle section for policy add/remove semantics
@tssurya tssurya force-pushed the fqdn-field-description-update branch from 2af60be to 2417bb7 Compare June 2, 2026 05:39
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