APC UPS control system Controlling Multiple UPSes on one Machine

Controlling Multiple UPSes on one Machine

Youmay want to use your server to control multiple UPSes. This is possible

by proper conﬁguration and by running one copy of apcupsd for eachUPS

to be controlled (recall the Conﬁguration types.).

The way to accomplish the above is to ensurethat none of the critical ﬁles

used by each of the two copies of apcupsd are the same. By using suitable

conﬁguration options, this is possible.

The First Copy of apcupsd:

For example, assuming you have SmartUPSes in both cases, to conﬁgure

and install the ﬁrst copy of apcupsd, which controls a UPS and Computer

A, one could use the following conﬁguration:

./configure \

--prefix=/usr \

--sbindir=/sbin \

--with-cgi-bin=/home/http/cgi-bin \

--enable-cgi \

--with-css-dir=/home/http/css \

--with-log-dir=/etc/apcupsd \

--with-serial-dev=/dev/ttyS0 \

--enable-pthreads \

--with-nis-port=3551 \

--enable-powerflute

This is prettymuch a “normal” installation using many of the defaults. Once

built and installed, this would control the ﬁrst UPS and cause a shutdownof

the system when the batteries are low. This copy of apcupsd will be started

and stopped automatically when the system is booted and halted.

The Second Copy of apcupsd:

To conﬁgure and install the second copy of apcupsd, which controls the

second UPS and Computer B, you could use the following conﬁguration:

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