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Additional: This may have been happening before, but yesterday I upgraded from 2.6.5 to 2.6.8 because GKE force-upgraded my cluster to 1.23 (so I will have deviated from the support matrix for a few days).

hi @melodic-umbrella-19641, if the cluster has been deleted, it should be ok to remove those leftovers manually although they should already be removed automatically when the cluster was removed. It is best to make a backup of your local cluster (methods depend on your setup) before the deletion.

Thanks @future-night-17486. What do I delete manually? There’s

namespace/c-rht6g

but I don’t know how to actually find the project namespaces. Aside from the 3 namespaces (cluster, default-project, system-project), are there other resources I should try to delete?

Do not delete the default or system project in the local cluster, they are not for this particular downstream cluster c-rht6g. In the local cluster, you should be able to find and delete the following 3 namespaces:

c-rht6g

,

p-5tnnn

and

p-z884h

To see the crtb or prtb, try the following command

k get <http://projectroletemplatebindings.management.cattle.io|projectroletemplatebindings.management.cattle.io> -n p-5tnnn
k get <http://clusterroletemplatebindings.management.cattle.io|clusterroletemplatebindings.management.cattle.io> -n c-rht6g

Just deleting

c-rht6g

automatically deletes the 2 related

p-

namespaces. Thank you very much Jack!