This bug was initially created as a copy of Bug #1861876 I am copying this bug because: MCDDrainError firing as critical on all drain failures, this is very misleading especially given PDBs. This should have been written as a warning.
Confirmed working with the steps in https://bugzilla.redhat.com/show_bug.cgi?id=1861876#c4 For release: 4.5.0-0.nightly-2020-08-20-235458
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (OpenShift Container Platform 4.5.8 bug fix update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:3510