Monitor APC UPS with Monit

2017-09-15

Monitor your UPS with monit and apcupsd, using an sh one-liner.

Example monit config:

check program ups with path "/usr/bin/sh -c 'STATUS=`/opt/local/sbin/apcaccess -p STATUS`; OK='ONLINE'; if [ $STATUS != $OK ]; then echo $STATUS; exit 1; fi;'"
  if status != 0 then alert

Explanation:

• /usr/bin/sh -c — execute the argument string in the bourne shell.
• /opt/local/sbin/apcaccess -p STATUS — get the value of the ‘STATUS’ field returned by apcaccess
• if [ $STATUS != $OK ]; then echo $STATUS; exit 1; fi; — compare the result to what you want; if there’s no match, then echo what you did get, so that Monit can report that in the alert, then exit with status 1 so that Monit knows there is a problem.
• if status != 0 then alert — back in monit land, if the exit value is not 0, then alert.