CentOS 9.x Configure basic NFSv4 server for sharing folders between two machines

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There is older article on this at CentOS 7.x Configure basic NFSv4 server for sharing folders between two machines

To configure CentOS 9.x based NFS server use:

1. Disable SELinux by editing '/etc/sysconfig/selinux' and setting:

   SELINUX=disabled

   Also run

   setenforce 0
   grubby --update-kernel ALL --args selinux=0

2. Based on requirement consider disabling firewall using:

   systemctl stop firewalld
   systemctl disable firewalld

3. Install nfs-utils package

   dnf -y install nfs-utils

4. Edit /etc/exports to export desired folder such as /home in below example:

   /home *(rw,no_root_squash,crossmnt)

5. Start and enable server

   systemctl start nfs-server
   systemctl enable nfs-server

6. Validate nfs exports from current server using:

   showmount -e

   exportfs -a -v

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