The syslog-ng 3.0 Administrator GuideDocument version: Thirteenth
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The syslog-ng 3.0 Administrator GuideDocument version: Thirteenth
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syslog-ng — syslog-ng system logger application
syslog-ng [options]
NOTE: This manual page covers both editions of syslog-ng: syslog-ng Open Source Edition
and the commercial syslog-ng Premium Edition. Features that are only included in the Premium
Edition are marked with an asterisk (*). For details, see the
official syslog-ng website: http://www.balabit.com/network-security/syslog-ng/.
This manual page is only an abstract; for the complete documentation of syslog-ng, see The syslog-ng Administrator Guide .
The syslog-ng application is a flexible and highly scalable system logging application. Typically, syslog-ng is used to manage log messages and implement centralized logging, where the aim is to collect the log messages of several devices on a single, central log server. The different devices - called syslog-ng clients - all run syslog-ng, and collect the log messages from the various applications, files, and other sources. The clients send all important log messages to the remote syslog-ng server, where the server sorts and stores them.
Use the specified configuration file.
Change root to the specified directory after reading the configuration file. The directory must be set up accordingly. Note that it is not possible to reload the syslog-ng configuration after chrooting.
Start syslog-ng in debug mode.
Enable syslog-ng to write core files in case of a crash to help support and debugging.
Set the minimal number of required file descriptors (fd-s); this sets how many
files syslog-ng can keep open simultaneously. Default value:
4096. Note that this does not override the global ulimit
setting of the host.
Do not daemonize, run in the foreground.
Switch to the specified group after initializing the configuration file.
Display a brief help message.
Run syslog-ng as root, without capability-support. This is the default behavior.
On Linux, it is possible to run syslog-ng as non-root with capability-support if
syslog-ng was compiled with the --enable-linux-caps option
enabled. (Execute syslog-ng --version to display the list of
enabled build parameters.)
Set the path and name of the syslog-ng.persist file where the
persistent options and data are stored.
Set path to the PID file where the pid of the main process is stored.
Sets how to run syslog-ng: in the foreground (mainly used
for debugging), in the background as a daemon, or in
safe-background mode. By default, syslog-ng runs in safe-background
mode. This mode creates a supervisor process called supervising syslog-ng , that restarts syslog-ng if it
crashes.
Specify the location of the file used for disk-based buffering. By default, this
file is located at /var/lib/syslog-ng/.
Log internal messages of syslog-ng to stderr. Mainly used for debugging purposes
in conjunction with the --foreground option.
Verify that the configuration file is syntactically correct and exit.
Switch to the specified user after initializing the configuration file (and
optionally chrooting). Note that it is not possible to reload the syslog-ng
configuration if the specified user has no privilege to create the
/dev/log file.
Enable verbose logging used to troubleshoot syslog-ng.
Display version number and compilation information.
The syslog-ng Administrator Guide
If you experience any problems or need help with syslog-ng, visit the syslog-ng mailing list
Copyright © 2007 BalaBit IT Security Ltd. Published under the Creative Commons Attribution-Noncommercial-No Derivative Works (by-nc-nd) 3.0 license. See Appendix 4, Creative Commons Attribution Non-commercial No Derivatives (by-nc-nd) License for details. The latest version is always available at http://www.balabit.com/support/documentation.
© 2007-2010 BalaBit IT Security
Please send your comments or documentation bugs to: documentation@balabit.com