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(libc.info)NSS Configuration File

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The NSS Configuration File
==========================

   Somehow the NSS code must be told about the wishes of the user.  For
this reason there is the file `/etc/nsswitch.conf'.  For each database
this file contain a specification how the lookup process should work.
The file could look like this:

     # /etc/nsswitch.conf
     #
     # Name Service Switch configuration file.
     #
     
     passwd:     db files nis
     shadow:     files
     group:      db files nis
     
     hosts:      files nisplus nis dns
     networks:   nisplus [NOTFOUND=return] files
     
     ethers:     nisplus [NOTFOUND=return] db files
     protocols:  nisplus [NOTFOUND=return] db files
     rpc:        nisplus [NOTFOUND=return] db files
     services:   nisplus [NOTFOUND=return] db files

   The first column is the database as you can guess from the table
above.  The rest of the line specifies how the lookup process works.
Please note that you specify the way it works for each database
individually.  This cannot be done with the old way of a monolithic
implementation.

   The configuration specification for each database can contain two
different items:

   * the service specification like `files', `db', or `nis'.

   * the reaction on lookup result like `[NOTFOUND=return]'.

Services in the NSS configuration

Service names in the NSS configuration.

Actions in the NSS configuration

React appropriately to the lookup result.

Notes on NSS Configuration File

Things to take care about while

configuring NSS.