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eac684ef1c29684b1bcd27a89c38c202e568e469Tom Gundersen<title>mod_proxy_fcgi - Apache HTTP Server Version 2.5</title>
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eac684ef1c29684b1bcd27a89c38c202e568e469Tom Gundersen<p class="apache">Apache HTTP Server Version 2.5</p>
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eac684ef1c29684b1bcd27a89c38c202e568e469Tom Gundersen<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 2.5</a> > <a href="./">Modules</a></div>
eac684ef1c29684b1bcd27a89c38c202e568e469Tom Gundersen<div id="preamble"><h1>Apache Module mod_proxy_fcgi</h1>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<p><span>Available Languages: </span><a href="/en/mod/mod_proxy_fcgi.html" title="English"> en </a></p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>FastCGI support module for
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code></td></tr>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<tr><th><a href="module-dict.html#ModuleIdentifier">Module�Identifier:</a></th><td>proxy_fcgi_module</td></tr>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<tr><th><a href="module-dict.html#SourceFile">Source�File:</a></th><td>mod_proxy_fcgi.c</td></tr>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.3 and later</td></tr></table>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p>This module <em>requires</em> the service of <code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code>. It provides support for the
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <a href="http://www.fastcgi.com/">FastCGI</a> protocol.</p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p>Thus, in order to get the ability of handling the <code>FastCGI</code>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek protocol, <code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code> and
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <code class="module"><a href="/mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> have to be present in the server.</p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p>Unlike <a href="http://httpd.apache.org/mod_fcgid/">mod_fcgid</a>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek and <a href="http://www.fastcgi.com/">mod_fastcgi</a>,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <code class="module"><a href="/mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> has no provision for starting the
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek application process; <code class="program"><a href="/programs/fcgistarter.html">fcgistarter</a></code> is provided
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek (on some platforms) for that purpose. Alternatively, external launching
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek or process management may be available in the FastCGI application
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek framework in use.</p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <div class="warning"><h3>Warning</h3>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p>Do not enable proxying until you have <a href="mod_proxy.html#access">secured your server</a>. Open proxy
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek servers are dangerous both to your network and to the Internet at
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<div id="quickview"><h3 class="directives">Directives</h3>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<p>This module provides no
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<li><img alt="" src="/images/down.gif" /> <a href="#examples">Examples</a></li>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<li><img alt="" src="/images/down.gif" /> <a href="#env">Environment Variables</a></li>
12b42c76672a66c2d4ea7212c14f8f1b5a62b78dTom Gundersen<li><code class="program"><a href="/programs/fcgistarter.html">fcgistarter</a></code></li>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<li><code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code></li>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<h2><a name="examples" id="examples">Examples</a></h2>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p>Remember, in order to make the following examples work, you have to
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek enable <code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code> and <code class="module"><a href="/mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code>.</p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <div class="example"><h3>Single application instance</h3><pre class="prettyprint lang-config">ProxyPass /myapp/ fcgi://localhost:4000/</pre>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p>This application should be able to handle multiple concurrent
12b42c76672a66c2d4ea7212c14f8f1b5a62b78dTom Gundersen connections. <code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code> enables connection reuse by
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek default, so after a request has been completed the connection will be
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek held open by that httpd child process and won't be reused until that
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek httpd process routes another request to the application. If the
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek FastCGI application is unable to handle enough concurrent connections
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek from httpd, requests can block waiting for the application to close
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek an existing connection. One way to resolve this is to disable connection
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek reuse on the <code class="directive">ProxyPass</code> directive, as shown in
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek the following example:</p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <div class="example"><h3>Single application instance, no connection reuse</h3><pre class="prettyprint lang-config">ProxyPass /myapp/ fcgi://localhost:4000/ disablereuse=on</pre>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p> The following example passes the request URI as a filesystem
a22e1850c36e52cb9d593b99be59b6ba7639d80aLennart Poettering path for the PHP-FPM daemon to run. The request URL is implicitly added
a22e1850c36e52cb9d593b99be59b6ba7639d80aLennart Poettering to the 2nd parameter. The hostname and port following fcgi:// are where
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek PHP-FPM is listening.</p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <div class="example"><h3>PHP-FPM</h3><pre class="prettyprint lang-config">ProxyPassMatch ^/myapp/.*\.php(/.*)?$ fcgi://localhost:9000/var/www/</pre>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p> The following example passes the request URI as a filesystem
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek path for the PHP-FPM daemon to run. In this case, PHP-FPM is listening on
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek a unix domain socket (UDS). Requires 2.4.9 or later. With this syntax,
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek the hostname and optional port following fcgi:// are ignored.</p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <div class="example"><h3>PHP-FPM with UDS</h3><pre class="prettyprint lang-config">ProxyPassMatch ^/(.*\.php(/.*)?)$ "unix:/var/run/php5-fpm.sock|fcgi://localhost/var/www/"</pre>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p>The balanced gateway needs <code class="module"><a href="/mod/mod_proxy_balancer.html">mod_proxy_balancer</a></code> and
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek at least one load balancer algorithm module, such as
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <code class="module"><a href="/mod/mod_lbmethod_byrequests.html">mod_lbmethod_byrequests</a></code>, in addition to the proxy
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek modules listed above. <code class="module"><a href="/mod/mod_lbmethod_byrequests.html">mod_lbmethod_byrequests</a></code> is the
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen default, and will be used for this example configuration.</p>
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen <div class="example"><h3>Balanced gateway to multiple application instances</h3><pre class="prettyprint lang-config">ProxyPass /myapp/ balancer://myappcluster/
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<Proxy balancer://myappcluster/>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek BalancerMember fcgi://localhost:4000
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek BalancerMember fcgi://localhost:4001
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek</Proxy></pre>
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen <p>You can also force a request to be handled as a reverse-proxy
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek request, by creating a suitable Handler pass-through. The example
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek configuration below will pass all requests for PHP scripts to the
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek specified FastCGI server using reverse proxy.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek This feature is available in Apache HTTP Server 2.4.10 and later. For performance
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek reasons, you will want to define a <a href="/mod_proxy.html#worker">worker</a>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek representing the same fcgi:// backend. The benefit of this form is that it
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek allows the normal mapping of URI to filename to occur in the server, and the
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek local filesystem result is passed to the backend. When FastCGI is
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek configured this way, the server can calculate the most accurate
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <div class="example"><h3>Proxy via Handler</h3><pre class="prettyprint lang-config"><FilesMatch \.php$>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek # Note: The only part that varies is /path/to/app.sock
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek SetHandler "proxy:unix:/path/to/app.sock|fcgi://localhost/"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek</FilesMatch>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<FilesMatch ...>
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen SetHandler "proxy:fcgi://localhost:9000"
5256e00e8b9015dd1a976d647fc71dc7efbd8cf8Tom Gundersen</FilesMatch>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<FilesMatch ...>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek SetHandler "proxy:balancer://myappcluster/"
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek</FilesMatch></pre>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek</div><div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<h2><a name="env" id="env">Environment Variables</a></h2>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <p>In addition to the configuration directives that control the
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek behaviour of <code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code>, there are a number of
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <dfn>environment variables</dfn> that control the FCGI protocol
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek <dd>By default <code class="module"><a href="/mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> will neither create
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek nor export the <var>PATH_INFO</var> environment variable. This allows
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek the backend FCGI server to correctly determine <var>SCRIPT_NAME</var>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek and <var>Script-URI</var> and be compliant with RFC 3875 section 3.3.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek If instead you need <code class="module"><a href="/mod/mod_proxy_fcgi.html">mod_proxy_fcgi</a></code> to generate
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek a "best guess" for <var>PATH_INFO</var>, set this env-var.
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek This is a workaround for a bug in some FCGI implementations.</dd>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek<p><span>Available Languages: </span><a href="/en/mod/mod_proxy_fcgi.html" title="English"> en </a></p>
798d3a524ea57aaf40cb53858aaa45ec702f012dZbigniew Jędrzejewski-Szmek</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 again 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 Freenode, or sent to our <a href="http://httpd.apache.org/lists.html">mailing lists</a>.</div>
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