A change in the set of internal ip addresses for a node causes the operator to go degraded. The operator is unable to detect node changes, so any discrepancy between node internal addresses and the SANs of certificates for that node is presumed to represent a potential membership change requiring manual intervention.
KCS solution https://access.redhat.com/solutions/6021331 updated with information related to this bug.
This bug will be shipped as part of next z-stream release 4.7.15 on June 14th, as 4.7.14 was dropped due to a regression https://bugzilla.redhat.com/show_bug.cgi?id=1967614
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 (Moderate: OpenShift Container Platform 4.7.16 security and 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/RHSA-2021:2286