Updated: April 19, 2023 |
Define remote mountpoints for NFS mount requests
/etc/exports
/etc/exports.hostname
The exports file defines remote mountpoints for the NFS mount protocol according to the NFS server specification; see RFC 1094 (Network File System Protocol Specification) and RFC 1813 (NFS Version 3 Protocol Specification).
Each line in the file specifies one remote mountpoint. The first field contains the mountpoint directory path, followed optionally by a list of options and/or a list of specific hosts separated by whitespace. If no specific hosts are specified, the mountpoint is exported to all hosts.
Here are the export options:
((client_ip & netmask) == network)
Let's now look at a sample file:
/usr -root=1 rickers snowhite.cis.uoguelph.ca /usr/local 131.104.48.16 /u -root=5 -mask=255.255.240.0 -match=131.104.0.0 /u2 -ro -mask=255.0.0.0 -match=10.0.0.0 node11 node23
The above example specifies the following:
This mountpoint: | Is exported: |
---|---|
/usr | To hosts rickers and snowhite.cis.uoguelph.ca only, with root mapped to 1 and with read/write access. |
/usr/local | To host 131.104.48.16 only, with root mapped to -2 and with read/write access. |
/u | To all hosts within 131.104.0.0 to 131.104.15.255, with root mapped to 5 and with read/write access. |
/u2 | To hosts node11 and node23 and to hosts belonging to IP network 10 only, with root mapped to -2 and with read-only access. |
Limitations:
Based on: