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This commit introduces API changes to support OVN-Kubernetes no-overlay mode for the default network,
where the cluster default network operates without overlay encapsulation (Geneve).

API changes (operator.openshift.io/v1):
- Added defaultNetworkTransport field to OVNKubernetesConfig (NoOverlay or Geneve)
- Added defaultNetworkNoOverlayOptions with outboundSNAT and routing configuration
- Added bgpManagedConfig for BGP configuration when routing is managed
- All no-overlay fields are immutable after cluster creation

Added feature gate (TechPreviewNoUpgrade) for NoOverlayMode within the Networking/ovn-kubernetes component.

Ran these commands to update autogenerated source files:
$ hack/update-codegen-crds.sh
$ hack/update-swagger-docs.sh
$ hack/update-payload-featuregates.sh

Openshift enhancement for this feature: openshift/enhancements#1859

Signed-off-by: Riccardo Ravaioli <[email protected]>
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@openshift-ci openshift-ci bot added the do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. label Dec 24, 2025
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openshift-ci bot commented Dec 24, 2025

Hello @zhaozhanqi! Some important instructions when contributing to openshift/api:
API design plays an important part in the user experience of OpenShift and as such API PRs are subject to a high level of scrutiny to ensure they follow our best practices. If you haven't already done so, please review the OpenShift API Conventions and ensure that your proposed changes are compliant. Following these conventions will help expedite the api review process for your PR.

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coderabbitai bot commented Dec 24, 2025

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@openshift-ci openshift-ci bot added the size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. label Dec 24, 2025
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openshift-ci bot commented Dec 24, 2025

[APPROVALNOTIFIER] This PR is NOT APPROVED

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Resolved merge conflict between FeatureGateNoOverlayMode (from PR openshift#2537)
and FeatureGateNetworkConnect (from master). Both feature gates are now
included in the features.go file.
@zhaozhanqi zhaozhanqi force-pushed the no-overlay-mode-resolved branch from 37706f2 to 5cb2732 Compare December 24, 2025 01:45
@zhaozhanqi zhaozhanqi marked this pull request as draft December 24, 2025 01:45
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3 participants