July 2005
Intermediate to advanced
944 pages
158h 24m
English
book
Linux in a Nutshell, Fifth Edition
by Ellen Siever, Aaron Weber, Stephen Figgins, Robert Love, Arnold Robbins
Content preview from Linux in a Nutshell, Fifth Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
30
|
Chapter 2: System and Network Administration Overview
This is the Title of the Book, eMatter Edition
Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.
Servers
In NIS, there are two types of servers: master servers and slave servers. Master
servers are responsible for maintaining the maps and distributing them to the
slave servers. The files are then available locally to requesting processes.
Domains
An NIS domain is a group of hosts that use the same set of maps. The maps are
contained in a subdirectory of /var/yp having the same name as the domain. The
machines in a domain share password, host, and group file information. NIS
domain names are set with the domainname command.
NIS Maps
NIS stores information in database files called maps. Each map consists of a pair
of dbm database files, one containing a directory of keys (a bitmap of indices) and
the other containing data values. The non-ASCII structure of dbm files necessi-
tates using NIS tools such as yppush to move maps between machines.
The file /var/yp/YP_MAP_X_LATE contains a complete listing of active NIS maps,
as well as NIS aliases for NIS maps. All maps must be listed in this file in order for
NIS to serve them.
Map Manipulation Utilities
The following utilities are used to administer NIS maps:
makedbm
Make dbm files. Modify only ypserv’s map and any nondefault maps.
ypinit
Build and install NIS databases. Manipulate maps ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.