[release-4.21] OCPBUGS-94179: fix registry override matching and propagation to init containers by avollmer-redhat · Pull Request #8879 · openshift/hypershift

avollmer-redhat · 2026-06-30T16:37:07Z

Summary

Combined manual backport of #8509 and #8824 to release-4.21.

The cherry-pick bot could not create this backport automatically because the support/util/registryoverride/ package does not exist on release-4.21 (it was introduced on main by #8509), causing merge conflicts.

What this fixes

Registry override substring matching bug (OCPBUGS-85585: tighten registry override matching to strict longest-prefix across release-image consumers #8509): RegistryMirrorProviderDecorator.Lookup() used strings.Replace which could match substrings inside hostnames (e.g. quay.io inside quay.io.example.com). Replaced with strict longest-prefix matching via new registryoverride.Replace() helper.
Digest/tag separator handling (OCPBUGS-92034: fix registry override matching for digest and tag separators #8824): The strict matching from OCPBUGS-85585: tighten registry override matching to strict longest-prefix across release-image consumers #8509 only accepted / as a valid separator. Repository-level overrides failed to match digest-based references (repo@sha256:...). Fixed matchesPrefix() to also accept @ (digest) and : (tag, when source contains a path component).
Init container image override propagation (OCPBUGS-85585: tighten registry override matching to strict longest-prefix across release-image consumers #8509): CPO-managed init containers (e.g. availability-prober) were not getting registry overrides applied because imageprovider.New() populated component images without running them through override logic. Added NewWithRegistryOverrides() and wired it into the HCP controller.

Root cause

Without these fixes, ValidatingAdmissionPolicies in Deny mode block HCP creation because CPO init containers still reference original registries (e.g. quay.io/redhat-user-workloads/...) instead of the configured mirror/ACR.

Changes

New: support/util/registryoverride/ package with Replace() and comprehensive tests (18 test cases)
Modified: support/releaseinfo/registry_mirror_provider.go — use registryoverride.Replace() instead of strings.Replace
Modified: control-plane-operator/.../imageprovider/imageprovider.go — add NewWithRegistryOverrides()
Modified: control-plane-operator/.../hostedcontrolplane_controller.go — wire NewWithRegistryOverrides with registry overrides from the release provider

Test plan

18 unit tests for registryoverride.Replace covering boundary matching, longest-prefix, digest/tag separators, false-positive rejection, mutation safety
All existing releaseinfo tests pass
All existing imageprovider tests pass (compilation verified)

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openshift-ci-robot · 2026-06-30T16:37:13Z

@avollmer-redhat: This pull request references Jira Issue OCPBUGS-94179, which is invalid:

expected Jira Issue OCPBUGS-94179 to depend on a bug targeting a version in 4.22.0 and in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but no dependents were found

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

Details

In response to this:

Summary\nCombined manual backport of #8509 and #8824 to release-4.21.\n\nThe cherry-pick bot could not create this backport automatically because the support/util/registryoverride/ package does not exist on release-4.21 (it was introduced on main by #8509), causing merge conflicts.\n\n## What this fixes\n\n1. Registry override substring matching bug (#8509): RegistryMirrorProviderDecorator.Lookup() used strings.Replace which could match substrings inside hostnames (e.g. quay.io inside quay.io.example.com). Replaced with strict longest-prefix matching via new registryoverride.Replace() helper.\n\n2. Digest/tag separator handling (#8824): The strict matching from #8509 only accepted / as a valid separator. Repository-level overrides failed to match digest-based references (repo@sha256:...). Fixed matchesPrefix() to also accept @ (digest) and : (tag, when source contains a path component).\n\n3. Init container image override propagation (#8509): CPO-managed init containers (e.g. availability-prober) were not getting registry overrides applied because imageprovider.New() populated component images without running them through override logic. Added NewWithRegistryOverrides() and wired it into the HCP controller.\n\n## Root cause\nWithout these fixes, ValidatingAdmissionPolicies in Deny mode block HCP creation because CPO init containers still reference original registries (e.g. quay.io/redhat-user-workloads/...) instead of the configured mirror/ACR.\n\n## Changes\n- New: support/util/registryoverride/ package with Replace() and comprehensive tests (18 test cases)\n- Modified: support/releaseinfo/registry_mirror_provider.go — use registryoverride.Replace() instead of strings.Replace\n- Modified: control-plane-operator/.../imageprovider/imageprovider.go — add NewWithRegistryOverrides()\n- Modified: control-plane-operator/.../hostedcontrolplane_controller.go — wire NewWithRegistryOverrides with registry overrides from the release provider\n\n## Test plan\n- [x] 18 unit tests for registryoverride.Replace covering boundary matching, longest-prefix, digest/tag separators, false-positive rejection, mutation safety\n- [x] All existing releaseinfo tests pass\n- [x] All existing imageprovider tests pass (compilation verified)\n\n## Related\n- Upstream PRs: #8509, #8824\n- 4.22 backport: #8877\n- Jira: OCPBUGS-94179, OCPBUGS-85585\n\n/cc @muraee @sjenning @raelga

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coderabbitai · 2026-06-30T16:37:16Z

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avollmer-redhat · 2026-06-30T16:37:19Z

/label backport-risk-assessed

openshift-ci · 2026-06-30T16:38:16Z

@avollmer-redhat: The label(s) backport-risk-assessed cannot be applied or removed, because you are not in one of the allowed teams and are not an allowed user. Must be a member of one of these teams: openshift-patch-managers, openshift-staff-engineers, openshift-release-oversight, openshift-sustaining-engineers

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avollmer-redhat · 2026-06-30T16:42:58Z

/area control-plane-operator
/area hypershift-operator

avollmer-redhat · 2026-06-30T16:44:46Z

/jira refresh

openshift-ci-robot · 2026-06-30T16:44:52Z

@avollmer-redhat: This pull request references Jira Issue OCPBUGS-94179, which is invalid:

expected dependent Jira Issue OCPBUGS-94180 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is New instead
expected dependent Jira Issue OCPBUGS-94180 to target a version in 4.22.0, but it targets "4.20.0" instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

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/jira refresh

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avollmer-redhat · 2026-07-01T13:54:37Z

/jira refresh

openshift-ci-robot · 2026-07-01T13:54:42Z

@avollmer-redhat: This pull request references Jira Issue OCPBUGS-94179, which is invalid:

expected dependent Jira Issue OCPBUGS-94180 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is POST instead
expected dependent Jira Issue OCPBUGS-94180 to target a version in 4.22.0, but it targets "4.20.0" instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

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/jira refresh

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avollmer-redhat · 2026-07-01T16:39:48Z

/jira refresh

openshift-ci-robot · 2026-07-01T16:39:52Z

@avollmer-redhat: This pull request references Jira Issue OCPBUGS-94179, which is invalid:

expected Jira Issue OCPBUGS-94179 to depend on a bug targeting a version in 4.22.0 and in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but no dependents were found

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

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/jira refresh

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…t containers Combined manual backport of openshift#8509 and openshift#8824 to release-4.21. Introduces strict longest-prefix registry override matching and wires overrides into CPO init container image resolution.

avollmer-redhat · 2026-07-01T16:45:33Z

/jira refresh

openshift-ci-robot · 2026-07-01T16:45:38Z

@avollmer-redhat: This pull request references Jira Issue OCPBUGS-94179, which is invalid:

expected dependent Jira Issue OCPBUGS-94170 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is POST instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

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/jira refresh

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openshift-ci-robot · 2026-07-02T14:39:00Z

@avollmer-redhat: This pull request references Jira Issue OCPBUGS-94179, which is invalid:

expected dependent Jira Issue OCPBUGS-94170 to be in one of the following states: VERIFIED, RELEASE PENDING, CLOSED (ERRATA), CLOSED (CURRENT RELEASE), CLOSED (DONE), CLOSED (DONE-ERRATA), but it is POST instead

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

Details

In response to this:

Summary

Combined manual backport of #8509 and #8824 to release-4.21.

The cherry-pick bot could not create this backport automatically because the support/util/registryoverride/ package does not exist on release-4.21 (it was introduced on main by #8509), causing merge conflicts.

What this fixes

Registry override substring matching bug (OCPBUGS-85585: tighten registry override matching to strict longest-prefix across release-image consumers #8509): RegistryMirrorProviderDecorator.Lookup() used strings.Replace which could match substrings inside hostnames (e.g. quay.io inside quay.io.example.com). Replaced with strict longest-prefix matching via new registryoverride.Replace() helper.

Digest/tag separator handling (OCPBUGS-92034: fix registry override matching for digest and tag separators #8824): The strict matching from OCPBUGS-85585: tighten registry override matching to strict longest-prefix across release-image consumers #8509 only accepted / as a valid separator. Repository-level overrides failed to match digest-based references (repo@sha256:...). Fixed matchesPrefix() to also accept @ (digest) and : (tag, when source contains a path component).

Init container image override propagation (OCPBUGS-85585: tighten registry override matching to strict longest-prefix across release-image consumers #8509): CPO-managed init containers (e.g. availability-prober) were not getting registry overrides applied because imageprovider.New() populated component images without running them through override logic. Added NewWithRegistryOverrides() and wired it into the HCP controller.

Root cause

Without these fixes, ValidatingAdmissionPolicies in Deny mode block HCP creation because CPO init containers still reference original registries (e.g. quay.io/redhat-user-workloads/...) instead of the configured mirror/ACR.

Changes

New: support/util/registryoverride/ package with Replace() and comprehensive tests (18 test cases)

Modified: support/releaseinfo/registry_mirror_provider.go — use registryoverride.Replace() instead of strings.Replace

Modified: control-plane-operator/.../imageprovider/imageprovider.go — add NewWithRegistryOverrides()

Modified: control-plane-operator/.../hostedcontrolplane_controller.go — wire NewWithRegistryOverrides with registry overrides from the release provider

Test plan

18 unit tests for registryoverride.Replace covering boundary matching, longest-prefix, digest/tag separators, false-positive rejection, mutation safety

All existing releaseinfo tests pass

All existing imageprovider tests pass (compilation verified)

Related

Upstream PRs: OCPBUGS-85585: tighten registry override matching to strict longest-prefix across release-image consumers #8509, OCPBUGS-92034: fix registry override matching for digest and tag separators #8824

4.22 backport: OCPBUGS-94170: fix registry override matching and propagation to init containers #8877

Jira: OCPBUGS-94179, OCPBUGS-85585

/cc @muraee @sjenning @raelga

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raelga

Cherry picks two already tested and shiped changes.

/lgtm

openshift-merge-bot · 2026-07-02T14:41:08Z

Scheduling required tests:
/test verify-deps

openshift-ci · 2026-07-02T14:41:19Z

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: avollmer-redhat, raelga
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raelga · 2026-07-02T14:41:23Z

/retest

openshift-ci · 2026-07-02T17:21:32Z

@avollmer-redhat: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-aws	`9c3c3ac`	link	true	`/test e2e-aws`
ci/prow/e2e-aks	`9c3c3ac`	link	true	`/test e2e-aks`

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openshift-ci-robot added jira/valid-reference Indicates that this PR references a valid Jira ticket of any type. jira/invalid-bug Indicates that a referenced Jira bug is invalid for the branch this PR is targeting. labels Jun 30, 2026

openshift-ci Bot added the do-not-merge/needs-area label Jun 30, 2026

openshift-ci Bot requested review from devguyio and sjenning June 30, 2026 16:38

avollmer-redhat force-pushed the fix/OCPBUGS-94179-combined-backport-4.21 branch from a8c2207 to 34efa85 Compare June 30, 2026 21:58

avollmer-redhat force-pushed the fix/OCPBUGS-94179-combined-backport-4.21 branch from 34efa85 to 697d0b5 Compare July 1, 2026 15:23

avollmer-redhat force-pushed the fix/OCPBUGS-94179-combined-backport-4.21 branch from 697d0b5 to 9c3c3ac Compare July 1, 2026 16:41

avollmer-redhat mentioned this pull request Jul 1, 2026

[release-4.22] OCPBUGS-94170: tighten registry override matching to strict longest-prefix across release-image consumers #8873

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avollmer-redhat changed the title ~~OCPBUGS-94179: fix registry override matching and propagation to init containers~~ [release-4.21] OCPBUGS-94179: fix registry override matching and propagation to init containers Jul 2, 2026

raelga approved these changes Jul 2, 2026

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openshift-ci Bot assigned raelga Jul 2, 2026

openshift-ci Bot added the lgtm Indicates that a PR is ready to be merged. label Jul 2, 2026

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