#grep -i nfsdargs /etc/sysconfig/nfs
RPCNFSDARGS="-N 4"
#systemctl restart nfs
NFS clients auto-negotiate the version of NFS to use with the NFS server, the NFS client will always use the highest version of NFS possible. So, if the NFS server supports NFSv4 the client will utilize it. Sometimes this negotiated version can cause complications on some applications that do not support higher versions of NFS
참고 : https://access.redhat.com/solutions/2350291
