OCPBUGS-120842: Fix GitopsService controller wiping admin NodePlacement on default ArgoCD CR

[Pratik-Redhat-Tech]

Fixes https://issues.redhat.com/browse/OCPBUGS-120842
Fixes #572

Summary

The GitopsService controller was clearing spec.nodePlacement on the default ArgoCD CR whenever GitopsService did not configure nodeSelector or tolerations. Admins who set nodePlacement directly on the ArgoCD CR (documented OpenShift GitOps pattern for dedicated infra nodes) saw scheduling configuration removed on every reconcile, so Argo CD workloads never moved off default worker nodes.

Root cause

In reconcileDefaultArgoCDInstance, when defaultArgoCDInstance.Spec.NodePlacement was nil but existingArgoCD.Spec.NodePlacement was set, the controller unconditionally cleared NodePlacement — conflating "GitopsService has no placement config" with "remove all placement from ArgoCD CR".

Fix

• Only sync NodePlacement when GitopsService explicitly configures nodeSelector or tolerations
• Track GitopsService-managed placement with annotation gitops.openshift.io/node-placement-managed-by-gitopsservice
• When GitopsService placement fields are cleared, remove operator-applied NodePlacement via the annotation
• Preserve admin-set NodePlacement on the ArgoCD CR when GitopsService does not manage placement

Files changed

• common/common.go — annotation constant
• controllers/gitopsservice_controller.go — reconcile logic
• controllers/gitopsservice_controller_test.go — unit tests for direct ArgoCD CR edits and GitopsService clear path

Test plan

• go test ./controllers/... -run 'TestReconcileDefault.*NodePlacement|TestReconcileDefaultForArgoCDNodeplacement'
• openshift-ci e2e (requires /ok-to-test)

Signed-off-by: Pratik Langde plangde@redhat.com

[openshift-ci]

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[openshift-ci]

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[coderabbitai]

No actionable comments were generated in the recent review. 🎉

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📥 Commits

Reviewing files that changed from the base of the PR and between a5e2e95 and bc936c6.

📒 Files selected for processing (2)

• controllers/gitopsservice_controller.go
• controllers/gitopsservice_controller_test.go

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📝 Summary

Summary by CodeRabbit

• Bug Fixes
  • GitOps Service placement settings now apply to Argo CD instances only when node selectors or tolerations are configured.
  • Administrator-configured node placement is preserved when no GitOps Service placement settings are specified.
  • Clearing GitOps Service placement settings removes only placement previously managed by the service, leaving administrator-configured placement unchanged.

Walkthrough

The controller now applies Argo CD NodePlacement only when configured by GitopsService, marks managed resources, preserves direct administrator edits, and removes previously managed placement when configuration is cleared. Tests cover each reconciliation path.

Changes

NodePlacement management

Layer / File(s)	Summary
Placement ownership and reconciliation common/common.go, controllers/gitopsservice_controller.go	Adds the management annotation constant. The controller conditionally applies placement, records ownership, updates managed placement, and removes only previously managed placement when settings are cleared.
Placement reconciliation tests controllers/gitopsservice_controller_test.go	Tests annotation assignment, preservation of direct NodePlacement edits, and removal of managed placement after clearing NodeSelector.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Merge Risk: ⚪ Minimal · up to bc936

GitopsService placement is now applied only when configured, preserves administrator-managed ArgoCD placement, and removes placement it previously managed when cleared. No current merge-blocking risk is identified.

🚥 Pre-merge checks | ✅ 4 | ❌ 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 4 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the GitopsService controller bug and the affected admin NodePlacement configuration.
Description check	✅ Passed	The description explains the NodePlacement reconciliation bug, the root cause, the fix, and the tests. It directly matches the changeset.
Linked Issues check	✅ Passed	The changes address issue #572 by preserving administrator-configured NodePlacement and correctly applying and clearing GitopsService-managed placement. The tests cover both direct configuration and r…
Out of Scope Changes check	✅ Passed	The annotation, reconciliation changes, and unit tests are all directly related to the NodePlacement management fix described in the linked issue.

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

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Inline comments:
In `@controllers/gitopsservice_controller.go`:
- Around line 579-581: Set common.NodePlacementManagedByGitopsServiceAnnotation
to "true" on defaultArgoCDInstance before the create-or-update branch, ensuring
newly created GitopsService-managed ArgoCD instances are marked. Add a
reconciliation test that creates the ArgoCD, clears GitopsService placement, and
verifies the managed node placement is removed.

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📥 Commits

Reviewing files that changed from the base of the PR and between fb60a7a and a5e2e95.

📒 Files selected for processing (3)

• common/common.go
• controllers/gitopsservice_controller.go
• controllers/gitopsservice_controller_test.go

🔗 Linked repositories identified

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[Pratik-Redhat-Tech]

Hi, could an org member please run /ok-to-test when convenient? Thanks.