You install or upgrade vCenter Server, like any other network server, on a virtual machine or physical server with a fixed IP address and well-known DNS name, so that clients can reliably access the service.
About this task
If you plan to use a FQDN, for the virtual machine or physical server on which you install or upgrade vCenter Server, you must verify that the FQDN is resolvable.
nslookup -nosearch -nodefname your_vCenter_Server_FQDN
If the FQDN is resolvable, the nslookup command returns the IP address and name of the vCenter Server virtual machine or physical server.