These instructions are a basic guide for a super-user to install and configure NFS on CentOS 7.
Install NFS server
yum install nfs-utils
Create export directory
mkdir /opt/nfs_share touch /opt/nfs_share/.abiquo_repository chmod -R 755 /opt/nfs_share chown nfsnobody:nfsnobody /opt/nfs_share
Enable and start NFS services
systemctl enable rpcbind systemctl enable nfs-server systemctl enable nfs-lock systemctl enable nfs-idmap systemctl start rpcbind systemctl start nfs-server systemctl start nfs-lock systemctl start nfs-idmap
Edit /etc/exports to share the NFS directory
/opt/nfs_share *(rw,sync,no_root_squash,no_all_squash)
Restart NFS service
systemctl restart nfs-server