Reapply "OCPBUGS-55506: Prevent startup failures due to name resolution"

[rfredette]

This reverts commit ac22e22.

[openshift-ci-robot]

@rfredette: This pull request references Jira Issue OCPBUGS-55506, which is valid. The bug has been moved to the POST state.

3 validation(s) were run on this bug

• bug is open, matching expected state (open)
• bug target version (4.21.0) matches configured target version for branch (4.21.0)
• bug is in the state ASSIGNED, which is one of the valid states (NEW, ASSIGNED, POST)

No GitHub users were found matching the public email listed for the QA contact in Jira (iamin@redhat.com), skipping review request.

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

Details

In response to this:

This reverts commit ac22e22.

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[candita]

Just adding a hold so it doesn't get merged accidentally.
/hold

[rhamini3]

Verified using same reproducing method on clusterversion: 4.20.0-0-2025-09-26-152646-test-ci-ln-s4t5v7b-latest

Router logs show no error and router pods are successfully recreated after being deleted

I0926 17:15:59.232866       1 router.go:665] "msg"="router reloaded" "logger"="template" "output"=" - Checking http://localhost:80 using PROXY protocol ...\n - Health check ok : 0 retry attempt(s).\n"

/verified by rhamini3

[openshift-ci-robot]

@rhamini3: This PR has been marked as verified by rhamini3.

Details

In response to this:

Verified using same reproducing method on clusterversion: 4.20.0-0-2025-09-26-152646-test-ci-ln-s4t5v7b-latest

Router logs show no error and router pods are successfully recreated after being deleted

I0926 17:15:59.232866       1 router.go:665] "msg"="router reloaded" "logger"="template" "output"=" - Checking http://localhost:80 using PROXY protocol ...\n - Health check ok : 0 retry attempt(s).\n"

/verified by rhamini3

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[rohara]

/retest

[openshift-bot]

Issues go stale after 90d of inactivity.

Mark the issue as fresh by commenting /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.
Exclude this issue from closing by commenting /lifecycle frozen.

If this issue is safe to close now please do so with /close.

/lifecycle stale

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[bentito]

@coderabbitai are the current check fails due to infra flakes or code changes in this PR?

[coderabbitai]

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🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
# Get current check runs for the PR
gh pr checks 677 --repo openshift/router 2>&1 | head -80

Length of output: 4513

---

@bentito: Based on the current check results, the failures appear to be infra flakes rather than code-related issues. Here's the evidence:

Check	Status	BaseSHA
e2e-metal-ipi-ovn-router	❌ FAIL	b231c65b
e2e-metal-ipi-ovn-dualstack	✅ PASS	b231c65b (same)
e2e-metal-ipi-ovn-ipv6	✅ PASS	b231c65b (same)
e2e-aws-fips	❌ FAIL	896390778
fips-image-scan-haproxy-router	✅ PASS	896390778 (same)
unit, verify, verify-deps, images	✅ PASS	—

Key observations:

1. e2e-metal-ipi-ovn-router failed, but e2e-metal-ipi-ovn-dualstack and e2e-metal-ipi-ovn-ipv6 both passed against the exact same BaseSHA — if the failure were code-related, the other metal-ipi jobs would likely also fail.
2. e2e-aws-fips failed while fips-image-scan-haproxy-router passed against the exact same BaseSHA — same pattern.
3. All core checks (unit, verify, verify-deps) passed cleanly.
4. The PR was already manually verified by rhamini3 on a real cluster, and rohara issued a /retest earlier suggesting maintainers also suspected flakes.

A /retest on the failing jobs should be sufficient to clear them.

[bentito]

/retest

[bentito]

/hold cancel

[bentito]

/lgtm

[Miciah]

We have not been able to reproduce the panic that the change was causing the first time we merged it. Because the panic is so rare, we likely need a very large number of CI runs to observe the issue. The plan therefore is to merge the PR again and monitor CI for coredumps, and to do the merge ASAP after branch cut (which was more than 3 weeks ago) so we can fix this early in the development cycle and minimize disruption to other teams.

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Miciah

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[openshift-ci]

@rfredette: 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-serial	6c4ca66	link	true	/test e2e-aws-serial

Full PR test history. Your PR dashboard.

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[openshift-merge-bot]

/retest-required

Remaining retests: 0 against base HEAD 65271d2 and 2 for PR HEAD 6c4ca66 in total

[openshift-ci-robot]

@rfredette: Jira Issue OCPBUGS-55506: All pull requests linked via external trackers have merged:

• openshift/router#656
• openshift/router#677

Jira Issue OCPBUGS-55506 has been moved to the MODIFIED state.

Details

In response to this:

This reverts commit ac22e22.

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.