Note: these instructions are for RHEL/CentOS unless otherwise specified

Also see: http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-nfs-client-config.html

1. Install nfs

    sudo yum install nfs-utiils
   

2. Ensure portmap service is enabled and running

    sudo /sbin/chkconfig portmap on
    sudo /sbin/chkconfig --list portmap
    sudo /sbin/service portmap start
   

Mount nfs on boot

Add this in /etc/fstab:

nfs-server.example.com:/opt/nfs-mount            /opt/my-folder        nfs     rsize=8192,wsize=8192,timeo=14,retry=5,intr,tcp

Manually mount nfs

mount -t nfs nfs-server.example.com:/opt/nfs-mount /opt/my-folder