CentOS – NFS server and public shares

Network File System (NFS) is a distributed file system protocol which allows a user on a client computer to access files over a computer network much like local storage is accessed.

1. install the package

dnf install nfs-utils -y

2. enable and start the service

systemctl enable nfs-server.service
systemctl start nfs-server.service

3. create the share directory and add privileges

mkdir /shared
chown nfsnobody:nfsnobody /shared
chmod 755 /shared
semanage fcontext -a -t public_content_rw_t "/shared(/.*)?"
setsebool -P nfsd_anon_write=1
restorecon -Rv /shared

4. configure the shares

vi /etc/exports
/shared *(ro,async,no_wdelay,no_root_squash)

5. disable NFS v2 and 3



6. disable listening for the RPCBIND, MOUNT, and NSM protocol calls, which are not necessary in the NFSv4

systemctl mask --now rpc-statd.service rpcbind.service rpcbind.socket

7. export it

exportfs -rav

8. add the firewall rule

firewall-cmd --add-service={nfs,mountd,rpc-bind}
firewall-cmd --add-service={nfs,mountd,rpc-bind} --permanent

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