ocpbugs-115274: fix webhook finalizer flake

[grokspawn]

Wait for OLMv1 finalizer cleanup to remove the webhook configurations before the namespace DeferCleanup runs. The webhook operator registers failurePolicy:Fail admission webhooks; if they outlive their backing service, the namespace controller cannot delete resources inside the terminating namespace, causing a 300s deadlock.

Summary by CodeRabbit

• Bug Fixes
  • Improved webhook cleanup verification during test teardown.
  • Tests now confirm validating and mutating webhook configurations are removed after ClusterExtension deletion.
  • Cleanup failures are detected before namespace deletion, helping prevent admission webhooks from blocking teardown.

[openshift-merge-bot]

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[openshift-ci-robot]

@grokspawn: This pull request references ocpbugs-115274 which is a valid jira issue.

Details

In response to this:

Wait for OLMv1 finalizer cleanup to remove the webhook configurations before the namespace DeferCleanup runs. The webhook operator registers failurePolicy:Fail admission webhooks; if they outlive their backing service, the namespace controller cannot delete resources inside the terminating namespace, causing a 300s deadlock.

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[coderabbitai]

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📒 Files selected for processing (1)

• openshift/tests-extension/test/webhooks.go

🚧 Files skipped from review as they are similar to previous changes (1)

• openshift/tests-extension/test/webhooks.go

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Walkthrough

ClusterExtension cleanup now verifies that OLMv1 removes the test webhook configurations before namespace cleanup. The verifier does not delete lingering configurations.

Changes

Webhook cleanup verification

Layer / File(s)	Summary
Verify webhook cleanup before namespace deletion openshift/tests-extension/test/webhooks.go	A wait-only helper checks that matching validating and mutating webhook configurations are absent. Deferred cleanup uses the helper after ClusterExtension deletion and before namespace cleanup.

Priority: ⬇️ Low

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Merge Risk: ⚪ Minimal · up to 1f659

No concrete merge-blocking risk is established by the available evidence.

🚥 Pre-merge checks | ✅ 14 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 3 functions across 1 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (14 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the webhook finalizer flake fix, which matches the main change in the pull request.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Stable And Deterministic Test Names	✅ Passed	The pull request adds one static Ginkgo step title, By("waiting for webhook configurations to be removed by OLMv1 cleanup"). The new helper uses dynamic webhook names only in assertion messages, not…
Test Structure And Quality	✅ Passed	The pull request adds a wait-only helper and calls it from existing ClusterExtension deferred cleanup. It does not add or alter an It block or create a new resource. The helper uses Eventually with he…
Microshift Test Compatibility	✅ Passed	The pull request changes only openshift/tests-extension/test/webhooks.go. It adds a cleanup helper and calls it from existing DeferCleanup; it does not add a new It, Describe, Context, or `W…
Single Node Openshift (Sno) Test Compatibility	✅ Passed	PASS: The PR adds no new Ginkgo test declaration. The authoritative diff only adds a wait-only helper and calls it during existing ClusterExtension cleanup. The helper lists webhook configurations and…
Topology-Aware Scheduling Compatibility	✅ Passed	PASS: The pull request changes only openshift/tests-extension/test/webhooks.go. It adds a polling helper that lists and verifies deletion of webhook configurations, and calls it during test cleanup.…
Ote Binary Stdout Contract	✅ Passed	The pull request changes only openshift/tests-extension/test/webhooks.go. The added helper performs Kubernetes list operations and Gomega assertions. The cleanup call adds a By step and invokes th…
Ipv6 And Disconnected Network Test Compatibility	✅ Passed	PASS. The pull request changes only openshift/tests-extension/test/webhooks.go. The added helper lists cluster-internal ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects and wa…
No-Weak-Crypto	✅ Passed	The pull request adds only webhook-configuration polling and cleanup sequencing. The added code uses Kubernetes list operations, prefix checks, and Gomega assertions. It does not add MD5, SHA1, DES, 3…
Container-Privileges	✅ Passed	The pull request changes only openshift/tests-extension/test/webhooks.go. The added helper and cleanup call contain no Kubernetes manifest or container security fields such as privileged, `hostPID…
No-Sensitive-Data-In-Logs	✅ Passed	PASS: The pull request adds a polling helper and a fixed By message. On failure, the helper reports only names of webhook configurations matching the test prefixes vwebhooktest and mwebhooktest.…

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[coderabbitai]

Actionable comments posted: 1

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Inline comments:
In `@openshift/tests-extension/test/webhooks.go`:
- Line 465: Replace the deferred cleanup call to
ensureCleanupWebhookConfigurations with a wait-only cleanup verification helper
or mode that does not delete webhook configurations, so failed OLMv1 removal
remains detectable; preserve the existing deleting cleanup behavior in
BeforeEach.

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• openshift/tests-extension/test/webhooks.go

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[tmshort]

@grokspawn can you address the coderabbit comment?

[tmshort]

/retest

[tmshort]

/lgtm

[openshift-merge-bot]

Scheduling required tests:
/test e2e-aws-olmv1-ext
/test e2e-aws-techpreview-olmv1-ext
/test e2e-gcp-ovn-upgrade
/test openshift-e2e-aws-techpreview

Scheduling tests matching the pipeline_run_if_changed or not excluded by pipeline_skip_if_only_changed parameters:
/test openshift-e2e-aws

[rashmigottipati]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: grokspawn, rashmigottipati, tmshort

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[joelanford]

Out of curiosity, what prevents the OLMv1 finalizer cleanup from continuing to try to delete the webhook configurations concurrently with the namespace (and backing services) being deleted?

It seems like it should be fine to delete the webhook configs and namespace concurrently, and even if the backing services disappear, the webhook config deletion isn't far behind, at which point the rest of the namespace deletion proceeds?

[openshift-ci]

@grokspawn: The following test 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-olmv1-ext	1f659db	link	true	/test e2e-aws-olmv1-ext

Full PR test history. Your PR dashboard.

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