Overview

Write a bit about the logging challenge.

What is Rsyslog?

Rsyslog is a rocket-fast system for log processing. It offers high-performance, great security features and a modular design. While it started as a regular syslogd, rsyslog has evolved into a kind of swiss army knife of logging, being able to

  • accept inputs from a wide variety of sources,

  • transform them,

  • and output the results to diverse destinations.

Rsyslog has a strong enterprise focus but also scales down to small systems.

Message flow in rsyslog

From where to where and when… describes the flow.

Input

Message Transformation

Output

Output format: Templates

See also

Help with configuring/using Rsyslog:

See also

Contributing to Rsyslog:

Copyright 2008-2025 Rainer Gerhards, (Großrinderfeld), and others.