yum install http://mirror.de-labrusse.fr/NethDev/nethserver-nfs/nethserver-nfs-1.0.0-1.ns7.noarch.rpm
please test and break it. Due to cockpit I cannot plug my code inside the nethserver-samba, so you have to create a shared folders first inside nethserver-samba panel, then go to nethserver-nfs, the NfsStatus of the sharedfolder is set to disabled by default .
check your export are well at :
check the upgrade from the former server-manager
@michelandre I stop the code for a while and I go to our studies