How to export an NFS share on a server?

To export an NFS share on a server, you will need to modify the /etc/exports configuration file. Here are the general steps:

1. Identify the directory that you want to share via NFS.
2. Add an entry to the end of the /etc/exports file that specifies the directory to share, the IP address or hostname of the client machine, and the permissions for that client to access the share. For example:

/path/to/share client_ip_address(rw,sync,no_subtree_check)

Here, rw stands for read/write access, sync specifies that data will be written to disk immediately, and no_subtree_check disables subtree checking for performance reasons. You can customize the permissions to fit your specific needs.

1. Save the file and run the following command to export the NFS share:

sudo exportfs -a

This will export all the shares listed in the /etc/exports file.

Note that you may need to restart the NFS service (sudo systemctl restart nfs) for changes to take effect. Additionally, make sure that both the NFS service and any firewalls are properly configured to allow NFS traffic.