Exporting a File System for NFS - (/etc/exports)
by Jeff Hunter, Sr. Database Administrator
This article presents the methods for preparing a set of directories that
can be exported to NFS clients using Linux. Under Linux this is can be accomplished
by editing the /etc/exports file.
For the purpose of this example, I will be exporting (sharing) the directory
About the /etc/exports File
The /etc/exports file contains an entry for each directory that
can be exported to NFS clients. This file is read automatically by the exportfs
command. If you change this file, you must run the exportfs command before the
changes can affect the way the daemon operates.
Only when this file is present during system startup does the rc.nfs script
execute the exportfs command and start the nfsd and mountd
Edit the exports file vi /etc/exports and add:
/dir/to/export is the directory you want to export
host#.mydomain.com is the machine allowed to log in this directory
The ro option mean mounting read-only
The root_squash option for not allowing root write access in this directory
For this change to take effect you will need to run the following command on your terminal:
[root@racnode1 ~]# /usr/sbin/exportfs -a
How to export the the directory in read/write mode (not a good idea!):
About the Author
Jeffrey Hunter is an Oracle Certified Professional, Java Development Certified Professional, Author,
and an Oracle ACE.
Jeff currently works as a Senior Database Administrator for
The DBA Zone, Inc. located in Pittsburgh, Pennsylvania.
His work includes advanced performance tuning, Java and PL/SQL programming, developing
high availability solutions, capacity
planning, database security, and physical / logical database design in a UNIX /
Linux server environment. Jeff's other interests include mathematical
encryption theory, tutoring advanced mathematics, programming language processors (compilers and interpreters)
in Java and C, LDAP, writing web-based database administration tools, and of
course Linux. He has been a Sr. Database Administrator and Software Engineer
for over 20 years and maintains his own website site at:
Jeff graduated from Stanislaus State University in Turlock,
California, with a Bachelor's degree in Computer Science and Mathematics.
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Last modified on
Friday, 29-Apr-2011 02:25:58 EDT
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