omprog output module - sending messages to a program

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# Program integration Output module

Module Name: omprog

Available since: 4.3.0

Author: Rainer Gerhards <rgerhards@adiscon.com>

Description:

This module permits to integrate arbitrary external programs into rsyslog's logging. It is similar to the "execute program (^)" action, but offers better security and much higher performance. While "execute program (^)" can be a useful tool for executing programs if rare events occur, omprog can be used to provide massive amounts of log data to a program.

Executes the configured program and feeds log messages to that binary via stdin. The binary is free to do whatever it wants with the supplied data. If the program terminates, it is re-started. If rsyslog terminates, the program's stdin will see EOF. The program must than terminate. The message format passed to the program can, as usual, be modified by defining rsyslog templates.

Note that each time an omprog action is defined, the corresponding programm is invoked. A single instance is not being re-used. There are arguments pro and con re-using existing binaries. For the time being, it simply is not done. In the future, we may add an option for such pooling, provided that some demand for that is voiced. You can also mimic the same effect by defining multiple rulesets and including them (at the price of some slight performance loss).

Configuration Directives:

- $ActionOMProgBinary <binary>
  The binary program to be executed.

Caveats/Known Bugs:

Currently none known.

[rsyslog.conf overview] [manual index] [rsyslog site]

This documentation is part of the rsyslog project.
Copyright © 2008-2011 by Rainer Gerhards and Adiscon. Released under the GNU GPL version 3 or higher.