NFS server on CentOS 7

yum install nfs-utils nfs-utils-lib nfs4-acl-tools
systemctl enable nfs-server
systemctl enable rpcbind

/etc/idmapd.conf

[General]
.
.
Domain = helux.nl
.

firewall-cmd --permanent --zone=management --add-service=nfs
firewall-cmd --permanent --zone=management --add-service=mountd
firewall-cmd --permanent --zone=management --add-service=rpc-bind

firewall-cmd --permanent --zone=local --add-service=nfs
firewall-cmd --permanent --zone=local --add-service=mountd
firewall-cmd --permanent --zone=local --add-service=rpc-bind
firewall-cmd --reload