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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:01:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:01:30 +0000 |
| commit | 6beeb1b708550be0d4a53b272283e17e5e35fe17 (patch) | |
| tree | 1ce8673d4aaa948e5554000101f46536a1e4cc29 /docs/manual/vhosts/ip-based.html.en | |
| parent | Initial commit. (diff) | |
| download | apache2-6beeb1b708550be0d4a53b272283e17e5e35fe17.tar.xz apache2-6beeb1b708550be0d4a53b272283e17e5e35fe17.zip | |
Adding upstream version 2.4.57.upstream/2.4.57
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'docs/manual/vhosts/ip-based.html.en')
| -rw-r--r-- | docs/manual/vhosts/ip-based.html.en | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/docs/manual/vhosts/ip-based.html.en b/docs/manual/vhosts/ip-based.html.en new file mode 100644 index 0000000..0823428 --- /dev/null +++ b/docs/manual/vhosts/ip-based.html.en @@ -0,0 +1,210 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head> +<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" /> +<!-- + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + This file is generated from xml source: DO NOT EDIT + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + --> +<title>Apache IP-based Virtual Host Support - Apache HTTP Server Version 2.4</title> +<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> +<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> +<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" /> +<script src="../style/scripts/prettify.min.js" type="text/javascript"> +</script> + +<link href="../images/favicon.ico" rel="shortcut icon" /></head> +<body id="manual-page"><div id="page-header"> +<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p> +<p class="apache">Apache HTTP Server Version 2.4</p> +<img alt="" src="../images/feather.png" /></div> +<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> +<div id="path"> +<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 2.4</a> > <a href="./">Virtual Hosts</a></div><div id="page-content"><div id="preamble"><h1>Apache IP-based Virtual Host Support</h1> +<div class="toplang"> +<p><span>Available Languages: </span><a href="../en/vhosts/ip-based.html" title="English"> en </a> | +<a href="../fr/vhosts/ip-based.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="../ja/vhosts/ip-based.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | +<a href="../ko/vhosts/ip-based.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | +<a href="../tr/vhosts/ip-based.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> +</div> +</div> +<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><ul id="toc"><li><img alt="" src="../images/down.gif" /> <a href="#explanation">What is IP-based virtual hosting</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#requirements">System requirements</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#howto">How to set up Apache</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#multiple">Setting up multiple daemons</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#single">Setting up a single daemon + with virtual hosts</a></li> +</ul><h3>See also</h3><ul class="seealso"><li> +<a href="name-based.html">Name-based Virtual Hosts Support</a> +</li><li><a href="#comments_section">Comments</a></li></ul></div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="explanation" id="explanation">What is IP-based virtual hosting</a></h2> +<p>IP-based virtual hosting is a method to apply different directives +based on the IP address and port a request is received on. Most commonly, +this is used to serve different websites on different ports or interfaces.</p> + +<p>In many cases, <a href="name-based.html">name-based +virtual hosts</a> are more convenient, because they allow +many virtual hosts to share a single address/port. +See <a href="name-based.html#namevip">Name-based vs. IP-based +Virtual Hosts</a> to help you decide. </p> +</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="requirements" id="requirements">System requirements</a></h2> + + <p>As the term <cite>IP-based</cite> indicates, the server + <strong>must have a different IP address/port combination for each IP-based + virtual host</strong>. This can be achieved by the machine + having several physical network connections, or by use of + virtual interfaces which are supported by most modern operating + systems (see system documentation for details, these are + frequently called "ip aliases", and the "ifconfig" command is + most commonly used to set them up), and/or using multiple + port numbers.</p> + + <p> In the terminology of Apache HTTP Server, using a single IP address + but multiple TCP ports, is also IP-based virtual hosting.</p> + +</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="howto" id="howto">How to set up Apache</a></h2> + + <p>There are two ways of configuring apache to support multiple + hosts. Either by running a separate <code class="program"><a href="../programs/httpd.html">httpd</a></code> daemon for + each hostname, or by running a single daemon which supports all the + virtual hosts.</p> + + <p>Use multiple daemons when:</p> + + <ul> + <li>There are security partitioning issues, such as company1 + does not want anyone at company2 to be able to read their + data except via the web. In this case you would need two + daemons, each running with different <code class="directive"><a href="../mod/mod_unixd.html#user">User</a></code>, <code class="directive"><a href="../mod/mod_unixd.html#group">Group</a></code>, <code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code>, and <code class="directive"><a href="../mod/core.html#serverroot">ServerRoot</a></code> settings.</li> + + <li>You can afford the memory and file descriptor + requirements of listening to every IP alias on the + machine. It's only possible to <code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code> to the "wildcard" + address, or to specific addresses. So if you have a need to + listen to a specific address for whatever reason, then you + will need to listen to all specific addresses. (Although one + <code class="program"><a href="../programs/httpd.html">httpd</a></code> could listen to N-1 of the addresses, and another could + listen to the remaining address.)</li> + </ul> + + <p>Use a single daemon when:</p> + + <ul> + <li>Sharing of the httpd configuration between virtual hosts + is acceptable.</li> + + <li>The machine services a large number of requests, and so + the performance loss in running separate daemons may be + significant.</li> + </ul> + +</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="multiple" id="multiple">Setting up multiple daemons</a></h2> + + <p>Create a separate <code class="program"><a href="../programs/httpd.html">httpd</a></code> installation for each + virtual host. For each installation, use the <code class="directive"><a href="../mod/mpm_common.html#listen">Listen</a></code> directive in the + configuration file to select which IP address (or virtual host) + that daemon services. e.g.</p> + + <pre class="prettyprint lang-config">Listen 192.0.2.100:80</pre> + + + <p>It is recommended that you use an IP address instead of a + hostname (see <a href="../dns-caveats.html">DNS caveats</a>).</p> + +</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="section"> +<h2><a name="single" id="single">Setting up a single daemon + with virtual hosts</a></h2> + + <p>For this case, a single <code class="program"><a href="../programs/httpd.html">httpd</a></code> will service + requests for the main server and all the virtual hosts. The <code class="directive"><a href="../mod/core.html#virtualhost">VirtualHost</a></code> directive + in the configuration file is used to set the values of <code class="directive"><a href="../mod/core.html#serveradmin">ServerAdmin</a></code>, <code class="directive"><a href="../mod/core.html#servername">ServerName</a></code>, <code class="directive"><a href="../mod/core.html#documentroot">DocumentRoot</a></code>, <code class="directive"><a href="../mod/core.html#errorlog">ErrorLog</a></code> and <code class="directive"><a href="../mod/mod_log_config.html#transferlog">TransferLog</a></code> + or <code class="directive"><a href="../mod/mod_log_config.html#customlog">CustomLog</a></code> + configuration directives to different values for each virtual + host. e.g.</p> + + <pre class="prettyprint lang-config"><VirtualHost 172.20.30.40:80> + ServerAdmin webmaster@www1.example.com + DocumentRoot "/www/vhosts/www1" + ServerName www1.example.com + ErrorLog "/www/logs/www1/error_log" + CustomLog "/www/logs/www1/access_log" combined +</VirtualHost> + +<VirtualHost 172.20.30.50:80> + ServerAdmin webmaster@www2.example.org + DocumentRoot "/www/vhosts/www2" + ServerName www2.example.org + ErrorLog "/www/logs/www2/error_log" + CustomLog "/www/logs/www2/access_log" combined +</VirtualHost></pre> + + + <p>It is recommended that you use an IP address instead of a + hostname in the <VirtualHost> directive + (see <a href="../dns-caveats.html">DNS caveats</a>).</p> + + <p> Specific IP addresses or ports have precedence over their wildcard + equivalents, and any virtual host that matches has precedence over + the servers base configuration.</p> + + <p>Almost <strong>any</strong> configuration directive can be + put in the VirtualHost directive, with the exception of + directives that control process creation and a few other + directives. To find out if a directive can be used in the + VirtualHost directive, check the <a href="../mod/directive-dict.html#Context">Context</a> using the + <a href="../mod/quickreference.html">directive index</a>.</p> + + <p><code class="directive"><a href="../mod/mod_suexec.html#suexecusergroup">SuexecUserGroup</a></code> + may be used inside a + VirtualHost directive if the <a href="../suexec.html">suEXEC + wrapper</a> is used.</p> + + <p><em>SECURITY:</em> When specifying where to write log files, + be aware of some security risks which are present if anyone + other than the user that starts Apache has write access to the + directory where they are written. See the <a href="../misc/security_tips.html">security tips</a> document + for details.</p> + +</div></div> +<div class="bottomlang"> +<p><span>Available Languages: </span><a href="../en/vhosts/ip-based.html" title="English"> en </a> | +<a href="../fr/vhosts/ip-based.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="../ja/vhosts/ip-based.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | +<a href="../ko/vhosts/ip-based.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | +<a href="../tr/vhosts/ip-based.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> +</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Libera.chat, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div> +<script type="text/javascript"><!--//--><![CDATA[//><!-- +var comments_shortname = 'httpd'; +var comments_identifier = 'http://httpd.apache.org/docs/2.4/vhosts/ip-based.html'; +(function(w, d) { + if (w.location.hostname.toLowerCase() == "httpd.apache.org") { + d.write('<div id="comments_thread"><\/div>'); + var s = d.createElement('script'); + s.type = 'text/javascript'; + s.async = true; + s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier; + (d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s); + } + else { + d.write('<div id="comments_thread">Comments are disabled for this page at the moment.<\/div>'); + } +})(window, document); +//--><!]]></script></div><div id="footer"> +<p class="apache">Copyright 2023 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> +<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div><script type="text/javascript"><!--//--><![CDATA[//><!-- +if (typeof(prettyPrint) !== 'undefined') { + prettyPrint(); +} +//--><!]]></script> +</body></html>
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