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'mon' is a general-purpose scheduler and alert management tool used for monitoring service availability and triggering alerts upon failure detection. It supports arbitrary monitoring facilities and alert methods via a common interface, all of which are easily implemented with programs in C, Perl, shell, etc., SNMP traps, and special mon traps. 'mon' views resource monitoring as two separate tasks: the testing of a condition, and triggering an action upon failure. It implements each task as separate, stand-alone programs. mon is fundamentally a scheduler which executes the monitors (each test a specific condition), and calls the appropriate alerts if the monitor fails. The decision to invoke an alert is governed by logic which offers various "squelch" features and dependencies.


User manpage available in HTML format from


Download version 1.0pre4 (stable)
released on 9 August 2004

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Related Projects


LicenseVerified byVerified onNotes
GPLv2orlaterJanet Casey27 January 2005

Leaders and contributors

Jim Trocki Maintainer

Resources and communication

Audience Resource type URI
Developer VCS Repository Webview
Bug Tracking VCS Repository Webview
Developer,Support E-mail

Software prerequisites

Kind Description
Required to use Perl 005_01 or later; Mon_Client

This entry (in part or in whole) was last reviewed on 25 May 2005.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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