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8.2.1 Managed UPS connections
A
Managed UPS
is a UPS that is directly connected as a Managed Device to the
console server
. You can
connect it via serial or USB cable or by the network. The
console server
becomes the
master
of this UPS,
and runs a
upsd
server to allow other computers that are drawing power through the UPS (
slaves
) to
monitor the UPS status and take appropriate action, such as shutdown when the UPS battery is low.
The
console server
may or may not be drawing power itself through the Managed UPS. When the UPS’s
battery power reaches critical, the
console server
signals and waits for
slaves
to shut down, then powers
off the UPS.
Serial and network connected UPSes must first be connected to, and configured to communicate with
the
console server
:
