Monitoring Agents


To get the most out of OP5 Monitor, you should use agents. The following agents are available from the download section in the support section at

  • OP5 NSClient++
  • RPE
  • Windows syslog Agent
  • Nagstamon

Agent Description

The table describes each agent briefly

Name Description
op5 NSClient++

This is the agent used for monitoring Windows operating systems. You can use it to monitor things like:

  • CPU, memory, and disk usage.
  • Dervices, windows events, and files.

You can also use the built-in NRPE support to create your own commands for op5 NSClient++.

NRPE This is the most commonly used agent for Linux and Unix systems. NRPE is used to execute plugins on an remote machine and then send the results back to OP5 Monitor.
You may also send arguments to the NRPE daemon on the remote machine to make it a bit more flexible. This must be turned on before you use the feature.
MRTGEXT MRTGEXT was originally written as an NLM for Novel Netware to obtain values used with the widely known MRTG, but it can also be used to poll values from op5 Monitor.
op5 Syslog Agent op5 Syslog Agent runs as a service under Windows. It formats all types of Windows Event log entries into syslog format and sends them to a syslog host (The OP5 Monitor server or the op5 LogServer).
The agent can also forward plaintext log-files.
Nagstamon Nagstamon is a status monitor for the desktop. It can connect to several servers and resides in the systray or as a floating statusbar at the desktop showing a brief summary of critical, warning, unknown, unreachable and down hosts and services and pops up a detailed status overview when moving the mouse pointer over it

More information can be found in Agents