Hi,
I experienced this bug when upgrading a Prime HA from 3.4 to 3.5 and including 3.5.1 Maintenance Release and Device Pack 4.
Received a Readiness Check Failed Error when following the HA reinstatement process.
I deleted the Secondary Prime Cert from the Primary Prime from CLI:
List of Certs on Primary Prime:
<Primary Prime>/admin# ncs certvalidation tofu-certs listcerts
host=<IP Address of Secondary Prime>_8082; subject= /C=US/ST=CA/L=SJ/O=Cisco Systems/OU=Prime Infra/<Hostname of Secondary Prime>
Fix:
<Primary Prime>/admin# ncs certvalidation tofu-certs deletecert host <IP Address of Secondary Prime>_8082
Deleted entry for <IP Address of Secondary Prime>_8082
Once this was configured and saved the Readiness Check passed and I was then able to reinstate the HA.
