.. program:: munin-limits
:ref:`munin-limits` is one of the processes regularly run from the :ref:`munin-cron` script.
It reads the current and the previous collected values for each plugin, and compares them to the plugin's warning and critical values, if it has any.
If the limits are breached, for instance, if a value moves from "ok" to "warning", or from "critical" to "ok", it sends an event to any configured contacts.
A common configured contact is "nagios", which can use events from munin-limits as a source of passive service check results.
.. option:: --config <file> Use <file> as configuration file. [/etc/munin/munin.conf]
.. option:: --contact <contact> Limit contacts to those of <contact<gt>. Multiple --contact options may be supplied. [unset]
.. option:: --host <host> Limit hosts to those of <host<gt>. Multiple --host options may be supplied. [unset]
.. option:: --service <service> Limit services to those of <service>. Multiple --service options may be supplied. [unset]
.. option:: --force Force sending of messages even if you normally wouldn't. Can be negated with --noforce. [--noforce]
.. option:: --force-root Force running as root (stupid and unnecessary). Can be negated with --noforce-root [--noforce-root]
.. option:: --help View help message.
.. option:: --debug If set, view debug messages. Can be negated with --nodebug. [--nodebug]
:ref:`/etc/munin/munin.conf <munin.conf>`
:ref:`/var/lib/munin/* <dbdir>`
:ref:`/var/run/munin/* <rundir>`