OCPBUGS-46086: Always set service-account-jwks-uri to LB URL even with custom issuer

[ShazaAldawamneh]

Previously, when a custom service account issuer was set, the
service-account-jwks-uri argument was not configured in the KubeAPIServer,
causing the JWKS URI to default to the node IP. This led to TLS errors
because the node IP is not included in the certificate SAN.

This commit updates observedConfig to always set
service-account-jwks-uri to the API LB URL regardless of whether the
issuer is default or custom. Unit tests have been updated to validate
this behavior.

Fixes: TLS SAN issues for clients accessing JWKS URI with custom issuers.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ShazaAldawamneh
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[openshift-ci-robot]

@ShazaAldawamneh: This pull request references Jira Issue OCPBUGS-46086, which is invalid:

• expected the bug to target the "4.17.z" version, but no target version was set
• release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
• expected Jira Issue OCPBUGS-46086 to depend on a bug targeting a version in 4.18.0, 4.18.z 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:

Previously, when a custom service account issuer was set, the
service-account-jwks-uri argument was not configured in the KubeAPIServer,
causing the JWKS URI to default to the node IP. This led to TLS errors
because the node IP is not included in the certificate SAN.

This commit updates observedConfig to always set
service-account-jwks-uri to the API LB URL regardless of whether the
issuer is default or custom. Unit tests have been updated to validate
this behavior.

Fixes: TLS SAN issues for clients accessing JWKS URI with custom issuers.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the openshift-eng/jira-lifecycle-plugin repository.

[davegord]

/retest-required

[openshift-ci]

@ShazaAldawamneh: 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/unit	6f4734f	link	true	/test unit
ci/prow/e2e-aws-ovn	6f4734f	link	true	/test e2e-aws-ovn
ci/prow/k8s-e2e-gcp	6f4734f	link	true	/test k8s-e2e-gcp

Full PR test history. Your PR dashboard.

Details

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