Open Source log management solution with over a million global users, an enhanced syslog daemon: the Babel fish of event processing

Visit us on GitHub

Getting started

To get started with syslog-ng, it must be installed. Most GNU/Linux distributions ship with binary packages, so either apt-get install syslog-ng or yum install syslog-ng is enough to get started. For other distributions and operating systems, the third-party packages list may be of use. To compile from source, please consult the README.

Once installed, a simple configuration (to be placed in /etc/syslog-ng/syslog-ng.conf), that puts all system logs down into a single file, is presented below:

@version: 3.5
@include "scl.conf"

source      s_system { system(); internal();                 };
destination d_all    { file("/var/log/all.log");             };
log                  { source(s_system); destination(d_all); };

Get the source


Open source

Released under a combination of the GNU General Public License (GPL) and Lesser General Public License (LGPL) - contributor agreement not required. Developed in the open: code, issues, mailing list all available!


The syslog-ng application scales well within a single computer, utilizing all available cores. Thanks to its flexible configuration, you can also build an architecture that spans multiple computers.


The configuration is very expressive, flexible, yet, still human readable. From the discrete building blocks of sources, parsers, filters, rewrite rules, and destinations, you can build incredibly powerful systems.

Why syslog-ng?

RFC3164 or RFC5424?
Whether you want to work with legacy BSD syslog (RFC3164) or the enhanced RFC5424 protocol, syslog-ng has you covered. Its flexible parser can process pretty much any variant of these protocols that you find in the wild.

You have unstructured data?
You have data in an unstructured format? That's not a problem: syslog-ng comes with a set of built-in parsers, which you can combine to build very complex things.

Are your logs all over the place?
Even if the incoming events are all over the place, with syslog-ng's patterndb, you can correlate events together, and transform them into a much more useful structure.

Databases, you say?
If you need to store your log messages in a database, you don't need to look any further! We have SQL (MySQL, PostgreSQL, even Oracle!), MongoDB. We also support inserting messages into Redis, if that's what you are after.

Message queues?
No problem! We support the Advanced Message Queuing Protocol (AMQP) and the Simple Text Oriented Messaging Protocol (STOMP) too, with more in the pipeline.

You need something special?
Even if you need something unique, there's a good chance that syslog-ng, the swiss army knife (or Babel fish) of logging already has the tools to support you. But even if not, contributing is easy! With responsive users and developers all around the globe.


New release: syslog-ng OSE 3.6.1 2014-10-22

The first production ready release of the syslog-ng branch has been released. Highlights include new modules that graduated from the Incubator, and other enhancements.

For more information, please see the announcement blog post!

New release: syslog-ng OSE 3.5.6 2014-08-05

A new version of the syslog-ng 3.5 stable branch has been released. Highlights include a memory leak fix, and pdbtool merge generating patterndb v4 files.

For more information, please see the release notes!

Google Summer of Code 2014: Midterm 2014-06-30

We are happy to share the good news that all students passed the mid-term evaluation, and they are all making good progress!

Google Summer of Code 2014: Accepted syslog-ng proposals 2014-04-23

We received a number of very strong proposals for this years Google Summer of Code programme, out of which, we were able to select four. Read here for further information.

Google Summer of Code 2014: syslog-ng ACCEPTED! 2014-02-25

After two years of participating in the Google Summer of Code programme under the umbrella of the openSUSE project, this year, we are accepted on our own! We have a list of ideas, students are encouraged to add their own ideas, or contact us if interested, or want to know more.