141 lines
6.9 KiB
HTML
141 lines
6.9 KiB
HTML
<!--
|
||
- Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC")
|
||
- Copyright (C) 2000-2003 Internet Software Consortium.
|
||
-
|
||
- Permission to use, copy, modify, and distribute this software for any
|
||
- purpose with or without fee is hereby granted, provided that the above
|
||
- copyright notice and this permission notice appear in all copies.
|
||
-
|
||
- THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
|
||
- REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
|
||
- AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
|
||
- INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
|
||
- LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
|
||
- OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
||
- PERFORMANCE OF THIS SOFTWARE.
|
||
-->
|
||
<!-- $Id: Bv9ARM.ch02.html,v 1.10.2.9 2005/10/13 02:23:41 marka Exp $ -->
|
||
<html>
|
||
<head>
|
||
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
|
||
<title>Chapter 2. BIND Resource Requirements</title>
|
||
<meta name="generator" content="DocBook XSL Stylesheets V1.69.1">
|
||
<link rel="start" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual">
|
||
<link rel="up" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual">
|
||
<link rel="prev" href="Bv9ARM.ch01.html" title="Chapter 1. Introduction ">
|
||
<link rel="next" href="Bv9ARM.ch03.html" title="Chapter 3. Nameserver Configuration">
|
||
</head>
|
||
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
|
||
<div class="navheader">
|
||
<table width="100%" summary="Navigation header">
|
||
<tr><th colspan="3" align="center">Chapter 2. <span class="acronym">BIND</span> Resource Requirements</th></tr>
|
||
<tr>
|
||
<td width="20%" align="left">
|
||
<a accesskey="p" href="Bv9ARM.ch01.html">Prev</a> </td>
|
||
<th width="60%" align="center"> </th>
|
||
<td width="20%" align="right"> <a accesskey="n" href="Bv9ARM.ch03.html">Next</a>
|
||
</td>
|
||
</tr>
|
||
</table>
|
||
<hr>
|
||
</div>
|
||
<div class="chapter" lang="en">
|
||
<div class="titlepage"><div><div><h2 class="title">
|
||
<a name="Bv9ARM.ch02"></a>Chapter 2. <span class="acronym">BIND</span> Resource Requirements</h2></div></div></div>
|
||
<div class="toc">
|
||
<p><b>Table of Contents</b></p>
|
||
<dl>
|
||
<dt><span class="sect1"><a href="Bv9ARM.ch02.html#id2547097">Hardware requirements</a></span></dt>
|
||
<dt><span class="sect1"><a href="Bv9ARM.ch02.html#id2547122">CPU Requirements</a></span></dt>
|
||
<dt><span class="sect1"><a href="Bv9ARM.ch02.html#id2547132">Memory Requirements</a></span></dt>
|
||
<dt><span class="sect1"><a href="Bv9ARM.ch02.html#id2547147">Nameserver Intensive Environment Issues</a></span></dt>
|
||
<dt><span class="sect1"><a href="Bv9ARM.ch02.html#id2547156">Supported Operating Systems</a></span></dt>
|
||
</dl>
|
||
</div>
|
||
<div class="sect1" lang="en">
|
||
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
|
||
<a name="id2547097"></a>Hardware requirements</h2></div></div></div>
|
||
<p><span class="acronym">DNS</span> hardware requirements have traditionally been quite modest.
|
||
For many installations, servers that have been pensioned off from
|
||
active duty have performed admirably as <span class="acronym">DNS</span> servers.</p>
|
||
<p>The DNSSEC and IPv6 features of <span class="acronym">BIND</span> 9 may prove to be quite
|
||
CPU intensive however, so organizations that make heavy use of these
|
||
features may wish to consider larger systems for these applications.
|
||
<span class="acronym">BIND</span> 9 is now fully multithreaded, allowing full utilization of
|
||
multiprocessor systems for installations that need it.</p>
|
||
</div>
|
||
<div class="sect1" lang="en">
|
||
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
|
||
<a name="id2547122"></a>CPU Requirements</h2></div></div></div>
|
||
<p>CPU requirements for <span class="acronym">BIND</span> 9 range from i486-class machines
|
||
for serving of static zones without caching, to enterprise-class
|
||
machines if you intend to process many dynamic updates and DNSSEC
|
||
signed zones, serving many thousands of queries per second.</p>
|
||
</div>
|
||
<div class="sect1" lang="en">
|
||
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
|
||
<a name="id2547132"></a>Memory Requirements</h2></div></div></div>
|
||
<p>The memory of the server has to be large enough to fit the
|
||
cache and zones loaded off disk. The <span><strong class="command">max-cache-size</strong></span>
|
||
option can be used to limit the amount of memory used by the cache,
|
||
at the expense of reducing cache hit rates and causing more <span class="acronym">DNS</span>
|
||
traffic. It is still good practice to have enough memory to load
|
||
all zone and cache data into memory — unfortunately, the best way
|
||
to determine this for a given installation is to watch the nameserver
|
||
in operation. After a few weeks the server process should reach
|
||
a relatively stable size where entries are expiring from the cache as
|
||
fast as they are being inserted. Ideally, the resource limits should
|
||
be set higher than this stable size.</p>
|
||
</div>
|
||
<div class="sect1" lang="en">
|
||
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
|
||
<a name="id2547147"></a>Nameserver Intensive Environment Issues</h2></div></div></div>
|
||
<p>For nameserver intensive environments, there are two alternative
|
||
configurations that may be used. The first is where clients and
|
||
any second-level internal nameservers query a main nameserver, which
|
||
has enough memory to build a large cache. This approach minimizes
|
||
the bandwidth used by external name lookups. The second alternative
|
||
is to set up second-level internal nameservers to make queries independently.
|
||
In this configuration, none of the individual machines needs to
|
||
have as much memory or CPU power as in the first alternative, but
|
||
this has the disadvantage of making many more external queries,
|
||
as none of the nameservers share their cached data.</p>
|
||
</div>
|
||
<div class="sect1" lang="en">
|
||
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
|
||
<a name="id2547156"></a>Supported Operating Systems</h2></div></div></div>
|
||
<p>ISC <span class="acronym">BIND</span> 9 compiles and runs on the following operating
|
||
systems:</p>
|
||
<div class="itemizedlist"><ul type="disc">
|
||
<li>IBM AIX 4.3</li>
|
||
<li>Compaq Digital/Tru64 UNIX 4.0D</li>
|
||
<li>Compaq Digital/Tru64 UNIX 5 (with IPv6 EAK)</li>
|
||
<li>HP HP-UX 11</li>
|
||
<li>IRIX64 6.5</li>
|
||
<li>Sun Solaris 2.6, 7, 8</li>
|
||
<li>NetBSD 1.5 (with unproven-pthreads 0.17)</li>
|
||
<li>FreeBSD 3.4-STABLE, 3.5, 4.0, 4.1</li>
|
||
<li>Red Hat Linux 6.0, 6.1, 6.2, 7.0</li>
|
||
</ul></div>
|
||
</div>
|
||
</div>
|
||
<div class="navfooter">
|
||
<hr>
|
||
<table width="100%" summary="Navigation footer">
|
||
<tr>
|
||
<td width="40%" align="left">
|
||
<a accesskey="p" href="Bv9ARM.ch01.html">Prev</a> </td>
|
||
<td width="20%" align="center"> </td>
|
||
<td width="40%" align="right"> <a accesskey="n" href="Bv9ARM.ch03.html">Next</a>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td width="40%" align="left" valign="top">Chapter 1. Introduction </td>
|
||
<td width="20%" align="center"><a accesskey="h" href="Bv9ARM.html">Home</a></td>
|
||
<td width="40%" align="right" valign="top"> Chapter 3. Nameserver Configuration</td>
|
||
</tr>
|
||
</table>
|
||
</div>
|
||
</body>
|
||
</html>
|