As instructed:
/etc/ganesha/ganesha.conf file
##################################################
#
# EXPORT
# To function, all that is required is an EXPORT
# Define the absolute minimal export
#
###################################################
EXPORT
{
	# Export Id (mandatory, each EXPORT must have a unique Export_Id)
	Export_Id = 99;
	# Exported path (mandatory)
        Path = "/mnt/lustre";
	# Pseudo Path (required for NFS v4)
	Pseudo = "/mnt/lustre";
	# Required for access (default is None)
	# Could use CLIENT blocks instead
	Access_Type = "RW" ;
	Protocols = "3" , "4" ;
	Squash = "no_root_squash" ;
	Transport = "UDP", "TCP" ;
	# Exporting FSAL
	FSAL {
		Name = VFS;
	}
}
NFS_Core_Param {
	#Nb_Worker = 16;
	Enable_Fast_Stats = true;
	#Dispatch_Max_Reqs = 4096;
	#Dispatch_Max_Reqs_Xprt = 512;
	RPC_Ioq_ThrdMax = 512;
	Enable_RQUOTA = false;
	Rquota_Port = 42424;
}
LOG {
	COMPONENTS {
		ALL = INFO;
	}
}