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<title>mod_status - Apache HTTP Server</title>
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<div id="preamble"><h1>Apache Module mod_status</h1>
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Provides information on server activity and
performance</td></tr>
<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>status_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_status.c</td></tr></table>
<h3>Summary</h3>

    <p>The Status module allows a server administrator to find out
    how well their server is performing. A HTML page is presented
    that gives the current server statistics in an easily readable
    form. If required this page can be made to automatically
    refresh (given a compatible browser). Another page gives a
    simple machine-readable list of the current server state.</p>

    <p>The details given are:</p>

    <ul>
      <li>The number of worker serving requests</li>

      <li>The number of idle worker</li>

      <li>The status of each worker, the number of requests that
      worker has performed and the total number of bytes served by
      the worker (*)</li>

      <li>A total number of accesses and byte count served (*)</li>

      <li>The time the server was started/restarted and the time it
      has been running for</li>

      <li>Averages giving the number of requests per second, the
      number of bytes served per second and the average number of
      bytes per request (*)</li>

      <li>The current percentage CPU used by each worker and in
      total by Apache (*)</li>

      <li>The current hosts and requests being processed (*)</li>
    </ul>

    <p>The lines marked "(*)" are only available if 
    <code class="directive"><a href="#extendedstatus">ExtendedStatus</a></code> 
    is <code>On</code>.</p>
</div>
<div id="quickview"><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif" /> <a href="#extendedstatus">ExtendedStatus</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#seerequesttail">SeeRequestTail</a></li>
</ul>
<h3>Topics</h3>
<ul id="topics">
<li><img alt="" src="../images/down.gif" /> <a href="#enable">Enabling Status Support</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#autoupdate">Automatic Updates</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#machinereadable">Machine Readable Status File</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="enable" id="enable">Enabling Status Support</a></h2>
    

    <p>To enable status reports only for browsers from the example.com
    domain add this code to your <code>httpd.conf</code>
    configuration file</p>
<div class="example"><p><code>
    &lt;Location /server-status&gt;<br />
    SetHandler server-status<br />
<br />
    Order Deny,Allow<br />
    Deny from all<br />
    Allow from .example.com<br />
    &lt;/Location&gt;
</code></p></div>

    <p>You can now access server statistics by using a Web browser
    to access the page
    <code>http://your.server.name/server-status</code></p>
</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="autoupdate" id="autoupdate">Automatic Updates</a></h2>

    
    <p>You can get the status page to update itself automatically if
    you have a browser that supports "refresh". Access the page
    <code>http://your.server.name/server-status?refresh=N</code> to
    refresh the page every N seconds.</p>

</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="section">
<h2><a name="machinereadable" id="machinereadable">Machine Readable Status File</a></h2>

    
    <p>A machine-readable version of the status file is available by
    accessing the page
    <code>http://your.server.name/server-status?auto</code>. This
    is useful when automatically run, see the Perl program in the
    <code>/support</code> directory of Apache,
    <code>log_server_status</code>.</p>

    <div class="note">
      <strong>It should be noted that if <code class="module"><a href="../mod/mod_status.html">mod_status</a></code> is
      compiled into the server, its handler capability is available
      in <em>all</em> configuration files, including
      <em>per</em>-directory files (<em>e.g.</em>,
      <code>.htaccess</code>). This may have security-related
      ramifications for your site.</strong>
    </div>

</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="ExtendedStatus" id="ExtendedStatus">ExtendedStatus</a> <a name="extendedstatus" id="extendedstatus">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Keep track of extended status information for each 
request</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>ExtendedStatus On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>ExtendedStatus Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_status</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>ExtendedStatus is only available in Apache 1.3.2 and 
later.</td></tr>
</table>
    <p>This setting applies to the entire server, and cannot be
    enabled or disabled on a virtualhost-by-virtualhost basis.
    The collection of extended status information can slow down
    the server.</p>

</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="SeeRequestTail" id="SeeRequestTail">SeeRequestTail</a> <a name="seerequesttail" id="seerequesttail">Directive</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Determine if mod_status displays the first 63 characters
of a request or the last 63, assuming the request itself is greater than
63 chars.</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>SeeRequestTail On|Off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>SeeRequestTail Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_status</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.2.7 and later.</td></tr>
</table>
    <p>mod_status with <code>ExtendedStatus On</code>
    displays the actual request being handled. 
    For historical purposes, only 63 characters of the request
    are actually stored for display purposes. This directive
    controls whether the 1st 63 characters are stored (the previous
    behavior and the default) or if the last 63 characters are. This
    is only applicable, of course, if the length of the request is
    64 characters or greater.</p>

    <p>If Apache is handling <code>GET&nbsp;/disk1/storage/apache/htdocs/images/imagestore1/food/apples.jpg&nbsp;HTTP/1.1</code> mod_status displays as follows:
    </p>

    <table class="bordered">
      <tr>
        <th>Off (default)</th>
        <td>GET&nbsp;/disk1/storage/apache/htdocs/images/imagestore1/food/fruits</td>
      </tr>
      <tr>
        <th>On</th>
        <td>orage/apache/htdocs/images/imagestore1/food/apples.jpg&nbsp;HTTP/1.1</td>
      </tr>
    </table>


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