Raspberry PI - Install NFS Server

dnf install nfs-kernel-server

sudo cp /etc/exports exports.org

vi /etc/exports

Configure NFS Exports: Edit the /etc/exports file to define the directories to be shared and the clients allowed to access them.

Export the new change

sudo nano /etc/exports

add a folder to share

# /etc/exports: the access control list for filesystems which may be exported
#               to NFS clients.  See exports(5).
#
# Example for NFSv2 and NFSv3:
# /srv/homes       hostname1(rw,sync,no_subtree_check) hostname2(ro,sync,no_subtree_check)
#
# Example for NFSv4:
# /srv/nfs4        gss/krb5i(rw,sync,fsid=0,crossmnt,no_subtree_check)
# /srv/nfs4/homes  gss/krb5i(rw,sync,no_subtree_check)
#
/home/ftp 192.168.253.0/255.255.255.0(rw,no_subtree_check)

On the client side

vi /etc/fstab 

Add after the current drives

#Custom
192.168.253.100:/home/ftp /var/www/html/files nfs auto,default 0 0