ClusterNotUpgradeablealert is shown in an OCP 4.8 cluster, with reason
One or more cluster operators have been blocking minor version cluster upgrades for at least an hour for reason AdminAckRequired.
Trying to upgrade from OCP 4.8 to OCP 4.9 fails with an error:
Reason: AdminAckRequired Message: Kubernetes 1.22 and therefore OpenShift 4.9 remove several APIs which require admin consideration. Please see the knowledge article https://access.redhat.com/articles/6329921 for details and instructions.
- Red Hat Openshift Container Platform (RHOCP)
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