NIS+ Transition Guide

NIS+ Tables Interoperate Differently With /etc Files

The manner in which NIS and other network information services interacted with /etc files in the SunOS 4.x environment was controlled by the /etc files using the +/- syntax. How NIS+, NIS, DNS and other network information services interact with /etc files in the Solaris operating environment is determined by the name service switch. The switch is a configuration file, /etc/nsswitch.conf, located on every Solaris operating environment client. It specifies the sources of information for that client: /etc files, DNS zone files (hosts only), NIS maps, or NIS+ tables. The nsswitch.conf configuration file of NIS+ clients resembles the simplified version in Example 2-1.

Example 2-1 Simplified Name Service Switch File

passwd: files

group: compat

group_compat: nisplus

hosts: nisplus dns [NOTFOUND=return] files

services: nisplus [NOTFOUND=return] files

networks: nisplus [NOTFOUND=return] files

protocols: nisplus [NOTFOUND=return] files

rpc: nisplus [NOTFOUND=return] files

ethers: nisplus [NOTFOUND=return] files

netmasks: nisplus [NOTFOUND=return] files

bootparams: nisplus [NOTFOUND=return] files

publickey: nisplus

netgroup: nisplus

automount: files nisplus

aliases: files nisplus

In other words, for most types of information, the source is first an NIS+ table, then an /etc file. For the passwd and group entries, the sources can either be network files or from /etc files and NIS+ tables as indicated by +/- entries in the files.

You can select from three versions of the switch-configuration file or you can create your own. For instructions, see Solaris Naming Administration Guide.