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8 <title>Apache Virtual Host documentation - Apache HTTP Server</title>
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15 <p class="apache">Apache HTTP Server Version 2.0</p>
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19 <a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.0</a></div><div id="page-content"><div id="preamble"><h1>Apache Virtual Host documentation</h1>
21 <p><span>Available Languages: </span><a href="../de/vhosts/" hreflang="de" rel="alternate" title="Deutsch"> de </a> |
22 <a href="../en/vhosts/" title="English"> en </a> |
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31 <p>The term <cite>Virtual Host</cite> refers to the practice of
32 running more than one web site (such as
33 <code>www.company1.com</code> and <code>www.company2.com</code>)
34 on a single machine. Virtual hosts can be "<a href="ip-based.html">IP-based</a>", meaning that you have a
35 different IP address for every web site, or "<a href="name-based.html">name-based</a>", meaning that you have
36 multiple names running on each IP address. The fact that they
37 are running on the same physical server is not apparent to the
40 <p>Apache was one of the first servers to support IP-based
41 virtual hosts right out of the box. Versions 1.1 and later of
42 Apache support both IP-based and name-based virtual hosts
43 (vhosts). The latter variant of virtual hosts is sometimes also
44 called <em>host-based</em> or <em>non-IP virtual hosts</em>.</p>
46 <p>Below is a list of documentation pages which explain all
47 details of virtual host support in Apache version 1.3 and
51 <div id="quickview"><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#support">Virtual Host Support</a></li>
52 <li><img alt="" src="../images/down.gif" /> <a href="#directives">Configuration directives</a></li>
53 </ul><h3>See also</h3><ul class="seealso"><li><code class="module"><a href="../mod/mod_vhost_alias.html">mod_vhost_alias</a></code></li><li><a href="name-based.html">Name-based virtual
54 hosts</a></li><li><a href="ip-based.html">IP-based virtual hosts</a></li><li><a href="examples.html">Virtual host examples</a></li><li><a href="fd-limits.html">File descriptor limits</a></li><li><a href="mass.html">Mass virtual hosting</a></li><li><a href="details.html">Details of host matching</a></li></ul></div>
55 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
57 <h2><a name="support" id="support">Virtual Host Support</a></h2>
60 <li><a href="name-based.html">Name-based Virtual Hosts</a> (More
61 than one web site per IP address)</li>
62 <li><a href="ip-based.html">IP-based Virtual Hosts</a> (An IP
63 address for each web site)</li>
64 <li><a href="examples.html">Virtual Host examples for common
66 <li><a href="fd-limits.html">File Descriptor Limits</a> (or,
67 <em>Too many log files</em>)</li>
68 <li><a href="mass.html">Dynamically Configured Mass Virtual
70 <li><a href="details.html">In-Depth Discussion of Virtual Host
74 </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
76 <h2><a name="directives" id="directives">Configuration directives</a></h2>
79 <li><code class="directive"><a href="../mod/core.html#virtualhost"><VirtualHost></a></code></li>
80 <li><code class="directive"><a href="../mod/core.html#namevirtualhost">NameVirtualHost</a></code></li>
81 <li><code class="directive"><a href="../mod/core.html#servername">ServerName</a></code></li>
82 <li><code class="directive"><a href="../mod/core.html#serveralias">ServerAlias</a></code></li>
83 <li><code class="directive"><a href="../mod/core.html#serverpath">ServerPath</a></code></li>
86 <p>If you are trying to debug your virtual host configuration, you
87 may find the Apache <code>-S</code> command line switch
88 useful. That is, type the following command:</p>
90 <div class="example"><p><code>
91 /usr/local/apache2/bin/httpd -S
94 <p>This command will dump out a description of how Apache parsed
95 the configuration file. Careful examination of the IP addresses and
96 server names may help uncover configuration mistakes. (See
97 the docs for the <code class="program"><a href="../programs/httpd.html">httpd</a></code> program for
98 other command line options)</p>
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110 <p class="apache">Copyright 2009 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
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