https://docs.openshift.com/container-platform/4.10/updating/updating-cluster-cli.html

The above doc describes how to run upgrades.

One note is:
"
After the update completes, you can confirm that the cluster version has updated to the new version:
$ oc get clusterversion
"

The thing is that if the upgrade didn't complete, this output may include errors, for example:

" oc get clusterversion
NAME VERSION AVAILABLE PROGRESSING SINCE STATUS
version 4.10.26 True True 24m Unable to apply 4.11.0-rc.7: an unknown error has occurred: MultipleErrors
"

We should include a note to disregard these errors as long as the "Progressing" is in True.