NAME

       nut.conf - UPS definitions for Network UPS Tools

DESCRIPTION

       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.

IMPORTANT NOTE

       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.

DIRECTIVES

       MODE
           Required. Recognized values are none, standalone, netserver and netclient. Defaults to
           none.

           none
               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 components.

           standalone
               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.

           netserver
               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 concerns.

           netclient
               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.

       UPSD_OPTIONS
           Optional. Set upsd specific options. See upsd(8) for more details. It is ignored when
           MODE above indicates that no upsd should be running.

       UPSMON_OPTIONS
           Optional. Set upsmon specific options. See upsmon(8) for more details. It is ignored
           when MODE above indicates that no upsmon should be running.

       POWEROFF_WAIT
           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/docs/shutdown.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.

           Warning
           this workaround might be dangerous under some circumstances. Please read
           http://bugs.debian.org/358696 for more details.

EXAMPLE

           # /etc/nut/nut.conf.  See nut.conf(5)

           MODE=none

           UPSD_OPTIONS=""

           UPSMON_OPTIONS=""

           # POWEROFF_WAIT=15m

INTEGRATION

       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.

SEE ALSO

       ups.conf(5), upsd.conf(5), upsd.users(5), upsmon.conf(5)

INTERNET RESOURCES

       The NUT (Network UPS Tools) home page: http://www.networkupstools.org/