[Nut-upsuser] MGE Ellipse 500 USB power failure problem
mandas at mandas.org
Sun Jan 3 22:00:03 UTC 2010
I have an MGE Ellipse 500 UPS for about 8 years, connected to a local
OpenBSD server through usb, running nut-2.2.1. I used to occasionally drain
the UPS battery to see if the local server was shutting down cleanly my desktop PC
and it was working OK.
Suddenly, there was a power failure last week, the UPS was serving the two
PCs (the server and the client) for 30 secs and then it went off,
cutting off the two machines unexpectedly. There weren't any messages in
syslog (all events are logged my upsmon) neither on the server side nor on
the client's side.
Today, I tried to reproduce this outtage to figure out what happens.
- Plugging off the UPS for ~5 secs, there were syslog messages about going
on battery and going back online.
- Plugging off the UPS in order for the server to force a clean shutdown,
the UPS works for about 30 secs and the cuts off the two machines like
the incident last week. Nothing is logged to syslog. After booting the
two machines again, UPS battery level is at 86% which tells me that it
didn't drain as I have read that it takes time to reach its full capacity
- No overload/failure indications have been reported.
I can only assume that there's something irreasonable with the values from
my upsmon.conf, intervals have been tweaked in order to avoid stall
problems. If the UPS is stall the NOTIFYCMD restarts upsdrvctl, upsd,
My upsmon.conf follows :
MONITOR myups at localhost 1 admin admin master
SHUTDOWNCMD "/sbin/shutdown -h +0"
NOTIFYFLAG ONLINE SYSLOG
NOTIFYFLAG ONBATT SYSLOG
NOTIFYFLAG LOWBATT SYSLOG
NOTIFYFLAG FSD SYSLOG
NOTIFYFLAG COMMOK SYSLOG
NOTIFYFLAG COMMBAD SYSLOG+EXEC
NOTIFYFLAG SHUTDOWN SYSLOG
NOTIFYFLAG REPLBATT SYSLOG
NOTIFYFLAG NOCOMM SYSLOG+EXEC
NOTIFYFLAG NOPARENT SYSLOG
Does anybody have an idea what's going wrong?
PGP key 39A40276 at wwwkeys.eu.pgp.net
key fingeprint: 9A0B 61C6 B826 4B73 69BB 972B C5E7 A153 39A4 0276
More information about the Nut-upsuser