Use this documentation with care! It describes
the outdated version 7, which was actively
developed around 2014 and is considered dead by the
This documentation reflects the latest update of the v7-stable branch. It describes the 7.6.8 version, which was never released. As such, it contains some content that does not apply to any released version.
To obtain the doc that properly matches your installed v7 version, obtain the doc set from your distro. Each version of rsyslog contained the version that exactly matches it.
As general advise, it is strongly suggested to upgrade to the current version supported by the rsyslog project. The current version can always be found on the right-hand side info box on the rsyslog web site.
Note that there is only limited rsyslog community support available for the outdated v7 version (officially we do not support it at all, but we usually are able to answer simple questions). If you need to stick with v7, it probably is best to ask your distribution for support.
Rsyslog has a modular design. This enables functionality to be dynamically loaded from modules, which may also be written by any third party. Rsyslog itself offers all non-core functionality as modules. Consequently, there is a growing number of modules. Here is the entry point to their documentation and what they do (list is currently not complete)
Please note that each module provides configuration directives, which are NOT necessarily being listed below. Also remember, that a modules configuration directive (and functionality) is only available if it has been loaded (using $ModLoad).
It is relatively easy to write a rsyslog module. If none of the provided modules solve your need, you may consider writing one or have one written for you by Adiscon’s professional services for rsyslog (this often is a very cost-effective and efficient way of getting what you need).
There exist different classes of loadable modules: