[mrtg] Re: can't do threshold checking for target xxx.xxx.com

Steve Shipway s.shipway at auckland.ac.nz
Mon Jul 25 01:48:23 MEST 2005

>I'm getting the following message repeatedly when I use the 
>command (perl -w mrtg mrtg_ups_temp_probe.cfg):
>WARNING: can't do threshold checking for target 
>xxx.xxx.com_1(i) -- No valid current data

You probably have 'Unknown' values stored in the RRD.  I don't know how
you're collecting the data, but probably it it returning Unknowns.  Use
rrdtool dump to check the actual stored current values -- you cant threshold
check against an Unknown.


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