Detailed steps to build an NFS file sharing server in Linux

yum install rpcbind nfs-utils

mkdir /home/test
chmod -R 777 /home/test/
cd /home/test/
vim aaa/bbb.txt

vim /etc/exports
Write /home/test 192.168.121.0/24 (rw)   
The shared file path allows the shared network segment (shared file executable permissions)

The shared file executable permissions are:
      ro Read-only access rw Read-write access sync All data is written to the share on request hide Do not share subdirectories in the NFS shared directory no_hide Share subdirectories of the NFS directory all_squash UID and GID mapping of shared files to anonymous users anonymous, suitable for public directories.
      no_all_squash preserves the UID and GID of shared files (default)
      root_squash All requests of the root user are mapped to the same permissions as the anonymous user (default)
      no_root_squas The root user has full administrative access to the root directory

systemctl start rpcbind nfs

Set the system to start automatically at boot echo "192.168.121.38:/home/test /nfs nfs4 defaults 0 0" >> /etc/fstab
 mount -av

showmount -e 192.168.121.38 (the IP address here is the host address of the server)

mount 192.168.121.38:/home/test/ /mnt/
df