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158 lines
5.7 KiB
HTML
158 lines
5.7 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta name="generator" content="HTML Tidy, see www.w3.org" />
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<title>Apache module mod_status</title>
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</head>
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<!-- Background white, links blue (unvisited), navy (visited), red (active) -->
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<body bgcolor="#FFFFFF" text="#000000" link="#0000FF"
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vlink="#000080" alink="#FF0000">
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<!--#include virtual="header.html" -->
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<blockquote>
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<strong>Warning:</strong> This document has not been updated
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to take into account changes made in the 2.0 version of the
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Apache HTTP Server. Some of the information may still be
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relevant, but please use it with care.
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</blockquote>
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<h1 align="CENTER">Module mod_status</h1>
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<p>This module provides information on server activity and
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performance.</p>
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<p><a href="module-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Base<br />
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<a href="module-dict.html#SourceFile"
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rel="Help"><strong>Source File:</strong></a> mod_status.c<br />
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<a href="module-dict.html#ModuleIdentifier"
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rel="Help"><strong>Module Identifier:</strong></a>
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status_module<br />
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<a href="module-dict.html#Compatibility"
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rel="Help"><strong>Compatibility:</strong></a> Available in
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Apache 1.1 and later.</p>
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<h2>Summary</h2>
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<p>The Status module allows a server administrator to find out
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how well their server is performing. A HTML page is presented
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that gives the current server statistics in an easily readable
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form. If required this page can be made to automatically
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refresh (given a compatible browser). Another page gives a
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simple machine-readable list of the current server state.</p>
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<p>The details given are:</p>
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<ul>
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<li>The number of children serving requests</li>
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<li>The number of idle children</li>
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<li>The status of each child, the number of requests that
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child has performed and the total number of bytes served by
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the child (*)</li>
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<li>A total number of accesses and byte count served (*)</li>
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<li>The time the server was started/restarted and the time it
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has been running for</li>
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<li>Averages giving the number of requests per second, the
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number of bytes served per second and the average number of
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bytes per request (*)</li>
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<li>The current percentage CPU used by each child and in
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total by Apache (*)</li>
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<li>The current hosts and requests being processed (*)</li>
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</ul>
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A compile-time option must be used to display the details
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marked "(*)" as the instrumentation required for obtaining
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these statistics does not exist within standard Apache.
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<h2>Directives</h2>
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<ul>
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<li><a href="#extendedstatus">ExtendedStatus</a></li>
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</ul>
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<h2>Enabling Status Support</h2>
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To enable status reports only for browsers from the foo.com
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domain add this code to your <code>access.conf</code>
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configuration file
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<pre>
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<Location /server-status>
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SetHandler server-status
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Order Deny,Allow
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Deny from all
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Allow from .foo.com
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</Location>
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</pre>
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<p>You can now access server statistics by using a Web browser
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to access the page
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<code>http://your.server.name/server-status</code></p>
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<p>Note that mod_status will only work when you are running
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Apache in <a href="core.html#servertype">standalone</a> mode
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and not <a href="core.html#servertype">inetd</a> mode.</p>
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<h3>Automatic Updates</h3>
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You can get the status page to update itself automatically if
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you have a browser that supports "refresh". Access the page
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<code>http://your.server.name/server-status?refresh=N</code> to
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refresh the page every N seconds.
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<h3>Machine Readable Status File</h3>
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A machine-readable version of the status file is available by
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accessing the page
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<code>http://your.server.name/server-status?auto</code>. This
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is useful when automatically run, see the Perl program in the
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<code>/support</code> directory of Apache,
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<code>log_server_status</code>.
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<blockquote>
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<strong>It should be noted that if <samp>mod_status</samp> is
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compiled into the server, its handler capability is available
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in <em>all</em> configuration files, including
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<em>per</em>-directory files (<em>e.g.</em>,
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<samp>.htaccess</samp>). This may have security-related
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ramifications for your site.</strong>
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</blockquote>
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<hr />
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<h2><a id="extendedstatus" name="extendedstatus">ExtendedStatus
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directive</a></h2>
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<!--%plaintext <?INDEX {\tt ExtendedStatus} directive> -->
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<a href="directive-dict.html#Syntax"
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rel="Help"><strong>Syntax:</strong></a> ExtendedStatus
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On|Off<br />
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<a href="directive-dict.html#Default"
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rel="Help"><strong>Default:</strong></a> <code>ExtendedStatus
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Off</code><br />
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<a href="directive-dict.html#Context"
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rel="Help"><strong>Context:</strong></a> server config <br />
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<a href="directive-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Base<br />
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<a href="directive-dict.html#Module"
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rel="Help"><strong>Module:</strong></a> mod_status<br />
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<a href="directive-dict.html#Compatibility"
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rel="Help"><strong>Compatibility:</strong></a> ExtendedStatus
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is only available in Apache 1.3.2 and later.
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<p>This directive controls whether the server keeps track of
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extended status information for each request. This is only
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useful if the status module is enabled on the server.</p>
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<p>This setting applies to the entire server, and cannot be
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enabled or disabled on a virtualhost-by-virtualhost basis.</p>
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<!--#include virtual="footer.html" -->
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</body>
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</html>
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