Currently using NFS4 idmapping. If i manually update the file "/sys/module/nfsd/parameters/nfs4_disable_idmapping" on the NFS Server to "N" and flush the cache the UID and GID show up correctly on the NFS client. The issue is on reboot it seems to change this file back to "Y"
The soluction "try to enforce numeric ID's on the server: echo "options nfs nfs4_disable_idmapping=1" > /etc/modprobe.d/nfs.conf and reboot NFS server." did not seem to help. I even tried nfs4_disable_idmapping=0
Best Answer
You specifying the wrong module. As you want to configure nfs server, then you have to provide the option for nfsd module:
Note that this should be "options nfsd" for the server module (not "options nfs").