NFS Services Administrator's Guide

Configuring and Administering AutoFS
Using Environment Variables as Shortcuts in AutoFS Maps
Chapter 3134
Using Environment Variables as Shortcuts in
AutoFS Maps
This section describes how to use environment variables as shortcuts in
AutoFS maps.
To use environment variables as shortcuts in direct and indirect maps,
follow these steps:
1. Use an environment variable anywhere in a direct or an indirect
AutoFS map except the first field, which specifies the local mount
point. An environment variable must be preceded by a dollar ($) sign
or must be enclosed in curly braces {}. The following direct map uses
a variable called HOST:
/private_files sage:/export/private_files/$HOST
2. Add the -D option to the AUTOMOUNTD_OPTIONS variable in the
/etc/rc.config.d/nfsconf file, to assign a value to the variable, as
in the following example:
AUTOMOUNTD_OPTIONS=”-D HOST='hostname'”
Notes on Using Environment Variables as Shortcuts
in Maps
IMPORTANT You cannot use environment variables in the AutoFS master map.
The previous example assumes that the NFS server, sage, has
subdirectories in its /export/private_files directory, which are
named after the hosts in its network. Every host in the network can use
the same AutoFS map and the same AUTOMOUNTD_OPTIONS definition, to
mount its private files from the server, sage.
For example, when AutoFS starts up on host basil, it assigns the value
basil to the HOST variable. Then, when someone requests access to the
local /private_files directory on basil, AutoFS mounts
/export/private_files/basil from the server, sage.