When there is a domain name change, and the Cisco UCS Manager needs to be available over HTTPS, generating a new default key ring certificate from the Cisco UCS Manager (B) is typically the recommended action. This ensures that the HTTPS service has a valid certificate that matches the new domain name. https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-manager/GUI-User-Guides/Admin-Managem