icinga2/doc/3.10-logging.md

Logging

Icinga 2 supports three different types of logging:

• File logging
• Syslog (on *NIX-based operating systems)
• Console logging (STDOUT on tty)

You can enable additional loggers using the icinga2-enable-feature and icinga2-disable-feature commands to configure loggers:

Feature	Description
debuglog	Debug log (path: /var/log/icinga2/debug.log, severity: debug or higher)
mainlog	Main log (path: /var/log/icinga2/icinga2.log, severity: information or higher)
syslog	Syslog (severity: warning or higher)

By default file the mainlog feature is enabled. When running Icinga 2 on a terminal log messages with severity information or higher are written to the console.