Unix Server Tech Knowledge Base

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====== FreeBSD NUT Client ======

Install and enable the upsmon driver from nut

<code bash>
# install the full nut package
pkg install nut
# Tell sysrc to enable upsmon
sysrc nut_upsmon_enable="YES"
# verify you have a connection to the master
upsc ups1@192.168.1.100
</code>

Configure two files, both in /usr/local/etc/nut

<file autoconf nut.conf>
# this will not do anything except communicate with the master
# to get the status
MODE=netclient
</file>

<file autoconf upsmon.conf>
# standard default values for monitoring
MINSUPPLIES 1
SHUTDOWNCMD "/sbin/poweroff"
POLLFREQ 5
POLLFREQALERT 5
HOSTSYNC 15
DEADTIME 15
POWERDOWNFLAG "/etc/killpower"
OFFDURATION 30
RBWARNTIME 43200
NOCOMMWARNTIME 300
FINALDELAY 5
# this is what we're monitoring
MONITOR ups1@192.168.1.100:3493 1 upsmon mypassword slave
</file>

Start the service
<code bash>service nut_upsmon start</code>

If you get an error, run the following command to see what config is messed up
<code bash>upsmon -DD</code>
This runs upsmon in the foreground, with the debug flag on. Press ctl-c to exit

===== Links =====

  * https://dan.langille.org/2020/09/07/monitoring-your-ups-using-nut-on-freebsd/