NFSv4 mount incorrectly shows all files with ownership as nobody:nobody

Issue

• From the client, the mounted NFSv4 share has ownership for all files and directories listed as nobody:nobody instead of the actual user that owns them on the NFSv4 server, or who created the new file and directory.
• Seeing nobody:nobody permissions on nfsv4 shares on the nfs client. Also seeing the following error in /var/log/messages:
• How to configure Idmapping for NFSv4

nss_getpwnam: name 'root@example.com' does not map into domain 'localdomain'