Newbies What Next ? News Forums Calendar


News Sections
General News (3987/0)
Reviews (637/0)
Press Releases (465/0)
Distributions (197/0)
Software (915/0)
Hardware (537/0)
Security (192/0)
Tutorials (356/0)
Off Topic (181/0)

User Functions


Don't have an account yet? Sign up as a New User

There are no upcoming events



Mon is a tool for monitoring the availability of services. Services may be network-related, environmental conditions, or anything that can be tested with software. If a service is unavailable Mon can tell you with syslog, email, your pager or a script of your choice. You can control who gets each alert based on the time of day or day of week, and you can control how often an existing problem is re-alerted.

Mon was designed to be open in the sense that it supports arbitrary monitoring facilities and alert methods via a common interface, which are easily implemented through programs (in C, Perl, shell, etc.), SNMP traps, and special Mon (UDP packet) traps.

This tool is extremely useful for system administrators, but it also has wider uses. It was designed to be a general-purpose problem alerting system, separating the tasks of testing services for availability and sending alerts when things fail. To achieve this, "mon" is implemented as a scheduler which runs the programs which do the testing, and triggering alert programs when these scripts detect failure. Alerts can be controlled by a variety of "squelch" knobs, and complex dependencies can be configured to help suppress excessive alerts.

 Mon 1.2.0

Free to download



Jim Trocki, David Nolan, Ed Ravin, Jon Meek, Augie Schwer


System Requirements
Perl 5.n
Perl client module

SourceForgeBuilding a High-Availability MYSQL Cluster, The heartbeat+mon+coda solution

Selected Reviews:

Features include:

  • moncmd, which is a command-line client. moncmd supports the full functionality of the client/server interface
  • monshow, a dual command-line and CGI interface report generator for showing the operational status of the services monitored by the server. It displays nicely-formatted columnar output of the current operational status, groups, and the failure log
  • skymon, which is a SkyTel 2-Way paging interface, allows you to query the server's state and to manipulate it in the same manner as moncmd, right from your pager. Access is controlled via a simple password and an access control file
  • mon.cgi, which is an interactive web interface, allows you to not only view status information, but to change parameters in the server while it is running

Return to System Monitoring Home Page

Bookmark and Share

Last Updated Sunday, June 07 2015 @ 11:59 AM EDT

We have written a range of guides highlighting excellent free books for popular programming languages. Check out the following guides: C, C++, C#, Java, JavaScript, CoffeeScript, HTML, Python, Ruby, Perl, Haskell, PHP, Lisp, R, Prolog, Scala, Scheme, Forth, SQL, Node.js (new), Fortran (new), Erlang (new), Pascal (new), and Ada (new).

Group Tests
100 Essential Apps
All Group Tests

Top Free Software
5 Office Suites
3 Lean Desktops
7 Document Processors
4 Distraction Free Tools
9 Project Management
4 Business Solutions
9 Groupware Apps
14 File Managers
10 Databases
21 Backup Tools
21 Productivity Tools
5 Note Taking Apps
9 Terminal Emulators
21 Financial Tools
5 Bitcoin Clients
21 Text Editors
21 Video Emulators
21 Home Emulators
42 Graphics Apps
6 CAD Apps
42 Scientific Apps
10 Web Browsers
42 Email Apps
12 Instant Messaging
10 IRC Clients
7 Twitter Clients
12 News Aggregators
11 VoIP Apps
42 Best Games
9 Steam Games
42 Audio Apps
5 Music Streaming
42 Video Apps
5 YouTube Tools
80 Security Apps
9 System Monitoring
8 Geometry Apps
Free Console Apps
14 Multimedia
4 Audio Grabbers
9 Internet Apps
3 HTTP Clients
5 File Managers
8 Compilers
9 IDEs
9 Debuggers
7 Revision Control Apps
6 Doc Generators
Free Web Software
21 Web CMS
14 Wiki Engines
8 Blog Apps
6 eCommerce Apps
5 Human Resource Apps
10 ERP
10 CRM
6 Data Warehouse Apps
8 Business Intelligence
6 Point-of-Sale

Other Articles
Migrating from Windows
Back up your data
20 Free Linux Books
24 Beginner Books
12 Shell Scripting Books

Older Stories
Saturday 05/16
  • 9 First Steps with Ubuntu 15.04 (0)
  • Excellent Console Log File Analyzers (0)

  • Monday 05/04
  • 100 Essential Free Apps (0)

  • Saturday 04/25
  • What are good command line HTTP clients? (0)

  • Sunday 04/12
  • First Peek at XBian on the Raspberry Pi 2 (0)

  • Saturday 04/04
  • First Look at OSMC RC on the Raspberry Pi 2 (0)

  • Sunday 03/29
  • First Steps with OpenELEC on the Raspberry Pi 2 (0)
  • Ubuntu MATE 15.04 for Raspberry Pi 2 (0)

  • Monday 03/16
  • MIPS Creator CI20 v Raspberry Pi 2 (0)
  • Raspberry Pi 2: Raspbian (ARMv6) v Linaro (ARMv7) (0)

  • Vote

    What Linux distribution do you run on your main computer?

    987 votes | 3 comments

    Built with GeekLog and phpBB
    Comments to the webmaster are welcome
    Copyright 2009 - All rights reserved