NFS Services Administrator's Guide

Configuring and Administering NFS
Configuring and Administering the NFS Automounter
Chapter 288
To Include an Automounter Map in Another
Automounter Map
• To include the contents of an automounter map in another
automounter map, add a plus sign (+) before the map name, as in the
following example:
# /etc/auto_home file
# local mount point mount options remote
server:directory
basil -nosuid basil:/home/basil
+auto.home
Assume the /etc/auto_home map is listed in the master map with the
following line:
/home /etc/auto_home
This example has the following effect:
If a user logs in whose home directory is in /home/basil, the
automounter will mount the directory /home/basil from host basil.
If a user logs in whose home directory is in /home/sage, /home/thyme, or
any subdirectory of /home other than basil, the automounter will look
in either the NIS or NIS+ auto.home map for information on mounting
the user’s home directory (depending on the Name Service Switch
configuration).
The plus sign (+) tells the automounter to look in a different map for the
information it needs to mount the directory. If the map name following
the plus sign begins with a slash, the automounter assumes it is a local
map. If the map name contains no slashes, the automounter uses the
Name Service Switch to determine whether it is a file, an NIS map, or an
NIS+ table. See “Configuring the Name Service Switch” on page 267.
You can include an NIS or NIS+ map inside an NIS or NIS+ master or
direct map. You cannot include an NIS or NIS+ map inside an NIS or
NIS+ indirect map.
If you specify an included NIS+ automounter map with no dots in the
name, the automounter appends org_dir.defaultdomain to the map
name. For example, if the map name you specify is auto_home, and your
Name Service Switch configuration indicates that NIS+ is to be used, the
automounter will look for a map called
auto_home.org_dir.defaultdomain.