Nisplus
From Wikipedia, the free encyclopedia
NISPLUS, or NIS+, is an enhanced version of the Network Information Service developed by Sun Microsystems. NIS and NISPLUS differ in structure and organization.
NISPLUS servers store information centrally (user passwords, home directories, network services, and so on) for NISPLUS clients to access. Clients have a configuration file /etc/nsswitch.conf to instruct them where to look for such information (either in local files, or NISPLUS maps at the server).
An installation of NISPLUS comes with predefined tables for structuring data, and commands are available to create other tables as needed.
NISPLUS uses a hierarchical structure; multiple servers in a domain can run NISPLUS. The primary server is known as the master server, and backup servers are known as replica servers. Both types of servers run NISPLUS and have a copy of the NISPLUS tables. Changes are first committed to the master server and then propagated to replica servers in increments.
NISPLUS table permissions determine users' level of access to their contents.
