rhobs / rhobs/observability-operator

Clusterscoped resources are not cleaned up when monitoring-stack is deleted

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Dominant language
Go
Stars
51
Forks
90
Avg merge
5d 15h
Merged PRs (30d)
22

Description

OwnerReferences do not work across namespaces and it equally applies to cluster-scoped resources
See: https://kubernetes.io/docs/concepts/overview/working-with-objects/owners-dependents/#owner-references-in-object-specifications

Cluster-scoped dependents can only specify cluster-scoped owners. In v1.20+, if a cluster-scoped dependent specifies a namespaced kind as an owner, it is treated as having an unresolvable owner reference, and is not able to be garbage collected.

Thus deleting the monitoring-stack will not delete the cluster-roles it creates. A workaround for it is to use finalizers on monitoring-stack and get the reconciler to delete clusterscoped resources before removing the finalizer.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing the monitoring-stack reconciler and its handling of finalizers and cluster-scoped resources. Verify how cluster roles are created and what happens when the monitoring-stack is deleted. Done means the reconciler removes those cluster-scoped resources before allowing deletion, with tests covering cleanup.

Written by the indexing model from the issue text.

Assessment

Tech stack
go, kubernetes
Domain
infrastructure
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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