Bug 1975533

Summary: Remove stale cruft installed by CVO in earlier releases
Product: OpenShift Container Platform Reporter: Jack Ottofaro <jack.ottofaro>
Component: openshift-apiserverAssignee: Stefan Schimanski <sttts>
Status: CLOSED NOTABUG QA Contact: Xingxing Xia <xxia>
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Version: 4.9CC: aos-bugs, mfojtik
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: 1975536 1975537 1975538 1975539 1975542 1975543 1975544 1975545 1977027 1977319 1978284 (view as bug list) Environment:
Last Closed: 2021-06-24 09:03:13 UTC Type: Bug
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Bug Blocks: 1975536    

Description Jack Ottofaro 2021-06-23 21:11:43 UTC 
Created attachment 1793631 [details]
Spreadsheet containing leaked resources.

This "stale cruft" is created as a result of the following scenario. Release A had manifest M that lead the CVO to reconcile resource R. But then the component maintainers decided they didn't need R any longer, so they dropped manifest M in release B. The new CVO will no longer reconcile R, but clusters updating from A to B will still have resource R in-cluster, as an unmaintained orphan.

Now that https://issues.redhat.com/browse/OTA-222 has been implemented teams can go back through and create deletion manifests for these leaked resources.

The attachment delete-candidates.csv contains a list of leaked resources as compared to a freshly installed 4.9 cluster. Use this list to find your component's resources and use the manifest delete annotation (https://github.com/openshift/cluster-version-operator/pull/438) to remove them.

Note also that in the case of a cluster-scoped resource it may not need to be removed but simply be modified to remove namespace.
Comment 1 Stefan Schimanski 2021-06-24 09:03:13 UTC 
I don't see openshift-apiserver among them. Closing.