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Apache module mod_status

Apache HTTP Server Version 1.3

Module mod_status

This module provides information on server activity and performance.

Status: Base
Source File: mod_status.c
Module Identifier: status_module
Compatibility: Available in Apache 1.1 and later.

Summary

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.

The details given are:

The number of children serving requests
The number of idle children
The status of each child, the number of requests that child has performed and the total number of bytes served by the child (*)
A total number of accesses and byte count served (*)
The time the server was started/restarted and the time it has been running for
Averages giving the number of requests per second, the number of bytes served per second and the average number of bytes per request (*)
The current percentage CPU used by each child and in total by Apache (*)
The current hosts and requests being processed (*)

Details marked "(*)" are only available with ExtendedStatus On.

Directives

ExtendedStatus

Enabling Status Support

To enable status reports only for browsers from the foo.com domain add this code to your httpd.conf configuration file

    <Location /server-status>
    SetHandler server-status

    Order Deny,Allow
    Deny from all
    Allow from .foo.com
    </Location>

You can now access server statistics by using a Web browser to access the page http://your.server.name/server-status

Alternatively, if you have lynx installed, you can also get a server statics report from the command line by running the command apachectl status, or, for the extended status report, apachectl fullstatus. See the apachectl documentation for additional details.

Note that mod_status will only work when you are running Apache in standalone mode and not inetd mode.

Automatic Updates

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

Machine Readable Status File

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

It should be noted that if mod_status is compiled into the server, its handler capability is available in all configuration files, including per-directory files (e.g., .htaccess). This may have security-related ramifications for your site.

ExtendedStatus directive

Syntax: ExtendedStatus On|Off
Default:

ExtendedStatus
    Off

Context: server config
Status: Base
Module: mod_status
Compatibility: ExtendedStatus is only available in Apache 1.3.2 and later.

This directive controls whether the server keeps track of extended status information for each request. This is only useful if the status module is enabled on the server.

This setting applies to the entire server, and cannot be enabled or disabled on a virtualhost-by-virtualhost basis.

Apache HTTP Server Version 1.3