Symptoms/Requirement:
Currently, the vSphere UI lacks the functionality to upload a custom certificate and its private key pair to a Supervisor cluster. Additionally, the process of generating a certificate and private key outside of the vCenter server, and then supplying both the certificate and key to Supervisor is not supported.
It is only possible to import the certificate file into the Supervisor cluster, and not the key file.
Importing a custom certificate along with its key pair is currently not supported. However, our engineering team is actively working on implementing this feature, which will provide customers with the option to import both the custom certificate and its key pair. This functionality is expected to be available in VCF 9.0.