nut.conf - UPS definitions for Network UPS Tools
This file attempts to standardize the various files being found in different
installations, like /etc/default/nut on Debian based systems and
/etc/sysconfig/ups on RedHat based systems.
Distribution’s init script should source this file in order to determine
which components have to be started.
Blank lines are ignored. Lines with a hash ( #
) character at the 1st
position of the line are ignored, too. They can be used to add comments.
This file is intended to be sourced by shell scripts. You MUST NOT use spaces
around the equal sign!
Refer to the EXAMPLE section for illustrations.
Required. Recognized values are none
. Defaults to
Indicates that NUT should not get started
automatically, possibly because it is not configured or that an Integrated
Power Management or some external system, is used to startup the NUT
Addresses a local only configuration, with 1
UPS protecting the local system. This implies to start the 3 NUT layers
(driver, upsd and upsmon), with the related configuration files. This mode can
also address UPS redundancy.
Like the standalone configuration, but also
possibly need one or more specific LISTEN directive(s) in upsd.conf. Since
this MODE is open to the network, a special care should be applied to security
When only upsmon is required, possibly because
there are other hosts that are more closely attached to the UPS, the MODE
should be set to netclient.
Optional. Set upsd specific options. See
upsd(8) for more details. It is ignored when MODE above
indicates that no upsd should be running.
Optional. Set upsmon specific options. See
upsmon(8) for more details. It is ignored when MODE above
indicates that no upsmon should be running.
Optional. At the end of an emergency system
halt, the upsmon master will signal the UPS to switch off. This may fail for a
number of reasons. Most notably is the case that mains power returns during
the shutdown process. See the section "Power races" in
/usr/share/doc/nut/FAQ.txt.gz. The system will wait this long for the UPS to
cut power, and then reboot. It should be long enough to exhaust the batteries,
in case line power continues to be unavailable. On the other hand, it should
not be so long that the system remains offline for an unreasonable amount of
time if line power has returned. See sleep(1) for compatible time syntax. If
you specify the time in seconds, use the "s" suffix.
this workaround might be dangerous under some circumstances. Please read
http://bugs.debian.org/358696 for more details.
# /etc/nut/nut.conf. See nut.conf(5)
An init script, such as /etc/init.d/nut, is expected to source this file in
order to determine which component(s) has to be started.
The NUT (Network UPS Tools) home page: http://www.networkupstools.org/