[rrd-users] Re: update: data not added into RRD file.

[roman at neofonie.de]

Zitiere Francois Dessart <fd-list at ibelgique.com>:

> 
> Hello guys,
> 
> I use rrdtool 1.0.37 with Cacti.
> Some graphs are not displayed.
> Investigating, I found that data are not integrated into RRD files.
> 
> I tried to manually update the RRD file with a command similar to
> "rrdtool update file.rrd --template data_template N:123456".
> No error message is displayed, however no data are added in the RRD
> file
> (all values are "NaN").
> 
> Does anybody have an idea about what's going wrong?
> 
> Thanks for your help.
> 
> Francois.

Hi Francois,

if your datasource is of a several COUNTER-type, you must update at least two 
values, so that you can see some values at fetching, because the counter-values 
are always calculated by (value[n]-value[n-1]/interval). 

>R°man



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