Nut upsuser - Jul 2009 - Premature end of script headers: upsimage.cgi

hi-

i'm using version 2.4.1, courtesy of debian testing, and noticed that  
in the web interface, the image for the battery voltage bar graph  
wasn't displaying.  the other images (change, input, output, load)  
seem to be fine.  the browser reports "500 internal server error", and
apache reports "Premature end of script headers: upsimage.cgi,  
referer: https://graphs.ltn.lvc.com/cgi-bin/nut/upsstats.cgi?host=ups6 at
localhost
"

upsc seems to also be working as expected, and reports a value for  
battery voltage:

 >upsc ups6 at localhost battery.voltage
55.00

i have 5 of these upses in total (smart-ups 1500 xlm monitored via  
snmp) which all exhibit the same behavior.

how can i further troubleshoot this?

thanks
-ben

On Thu, 9 Jul 2009 12:29:31 -0400, benjamin thielsen
wrote:
> hi-
> 
> i'm using version 2.4.1, courtesy of debian testing, and noticed that  
> in the web interface, the image for the battery voltage bar graph  
> wasn't displaying.  the other images (change, input, output, load)  
> seem to be fine.  the browser reports "500 internal server
error", and
> apache reports "Premature end of script headers: upsimage.cgi,  
> referer: https://graphs.ltn.lvc.com/cgi-bin/nut/upsstats.cgi?host=ups6 at
localhost
> "
> 
> upsc seems to also be working as expected, and reports a value for  
> battery voltage:
> 
>  >upsc ups6 at localhost battery.voltage
> 55.00
> 
> i have 5 of these upses in total (smart-ups 1500 xlm monitored via  
> snmp) which all exhibit the same behavior.
> 
> how can i further troubleshoot this?
You could try running upsimage.cgi manually, maybe you'll get a useful
error message.

-- 
Jean Delvare