The nsswitch.conf file is the configuration file for name-service lookups. This file determines the following information.
The databases within the Solaris environment to use for name-service lookups
The order in which the databases are to be consulted
Some data services require that you direct “group” lookups to “files” first. For these data services, change the “group” line in the nsswitch.conf file so that the “files” entry is listed first. See the documentation for the data service that you plan to configure to determine whether you need to change the “group” line.
For additional information about how to configure the nsswitch.conf file for the Sun Cluster environment, see Planning the Sun Cluster Environment in Sun Cluster Software Installation Guide for Solaris OS.