[Nut-upsuser] false alerts/shutdown

[Stijn Gruwier]

Hello,

I've installed Nut (2.0.5) on RedHat a week ago, and upsmon seems to 
generate false alarms every hour:

...
Jun  8 06:10:56 nutevalserver upsmon[2849]: UPS 
usb-mge-evolution at localhost on line power
Jun  8 06:35:46 nutevalserver upsmon[2849]: UPS 
usb-mge-evolution at localhost on battery
Jun  8 06:35:51 nutevalserver upsmon[2849]: UPS 
usb-mge-evolution at localhost on line power
Jun  8 07:24:47 nutevalserver upsmon[2849]: UPS 
usb-mge-evolution at localhost on battery
Jun  8 07:24:52 nutevalserver upsmon[2849]: UPS 
usb-mge-evolution at localhost on line power
Jun  8 08:27:07 nutevalserver upsmon[2849]: UPS 
usb-mge-evolution at localhost on battery
...

I increased the values for MAXAGE (upsd.conf, from 15 to 30) and 
DEADTIME (upsmon.conf, from 15 to 25), and that reduced the false alerts 
to every some hours. That's strange, I thought a problem with Maxage or 
Deadtime would result in 'Stale information' messages instead of upsmon 
believing the UPS is on battery....

Jun 12 13:03:21 nutevalserver upsmon[4020]: UPS 
usb-mge-evolution at localhost on line power
Jun 12 21:30:38 nutevalserver upsmon[4020]: UPS 
usb-mge-evolution at localhost on battery
Jun 12 21:30:48 nutevalserver upsmon[4020]: UPS 
usb-mge-evolution at localhost on line power
Jun 13 04:22:49 nutevalserver upsmon[4020]: UPS 
usb-mge-evolution at localhost on battery
Jun 13 04:22:59 nutevalserver upsmon[4020]: UPS 
usb-mge-evolution at localhost on line power
Jun 13 09:39:59 nutevalserver upsmon[4020]: UPS 
usb-mge-evolution at localhost on battery
*Jun 13 09:39:59 nutevalserver upsmon[4020]: UPS 
usb-mge-evolution at localhost battery is low*

Here the situation got worse, upsmon thought the battery was low and 
shut down the server. When I went to the server room almost immediately, 
the UPS was fully charged, but the server had shut down. It looks like 
either the driver (newhidups) or upsd is receiving wrong information. 
I'm positive there are no electrical problems, as all the other servers 
experience no problems...

The UPS is a MGE Evolution 650 connected by usb to the server. The nut 
driver I'm using is newhidups and the configuration looks like this:
[usb-mge-evolution]
       driver = newhidups
       port = auto
       vendorid = 0463
       productid = ffff
       desc = "MGE evolution ups,in de installatieruimte ter test"

Did anyone experience this before or has some advice?

Thanks,

Stijn Gruwier



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