Hi Benny, I've tried Ben's suggestion earlier and used the PRINT function. It's working great - right now I'm trying to understand how to do PRINT based on CDEFs as well as VDEFs. (Ie printing out "Disk XYZ is projected to be <X>% full on <date> and reaches critical <Y>% on <date>".) Since different projection times gives different results, next step will also be to correlate these different dates/value pair to get a 'best-guess' result. I'm quite sure it is only my limited brain capacity that stops me from getting this fully working today. :-) I'll put the script online somewhere if anyone else could benefit from it. Thanks for the input, Brgrds, Fredrik
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Benny Baumann Sent: den 26 oktober 2009 15:35 To: [email protected] Subject: Re: [rrd-users] Handling VDEFs outside rrdtools Hi, Am 26.10.2009 10:24, schrieb Fredrik Hansen: > > Hi, > > Im using rrdtools to extrapolate and calculate trends for disk full > prediction and the calc works as expected. > > I get nice graphs showing which date a certain disk is predicted to be > at a certain usage level. > > Since the amount of rrd's is quite a lot ( around 2100 ), > > I need a smoother way to only get results/reports for the drives which > have a full disk forecast in the near future. But that implies to have > the calculated data scriptable, and I'm wondering if there is a way to > run the calculations (LSL-based) and use the results external to rrdtool? > > One way could be to store the calculations in another rrd-file and > then dump the contents from that to a handy script ? > > Another way possible is maybe to directly extract the values from the > calculation and output to a script which could create an email alert > or something like that. > > I'm out of ideas on how to proceed, ie to get data in a VDEF sent > outside rrdtools world. > > Tips, ideas or rtfm hints are highly appreciated. J > > Brgrds, > > Fredrik Hansen > > There are two more or less easily scriptable ways to do this: The first would be using the PRINT instruction of the graph command of rrdtool to print out the information you need. Another way might be the rrd_fetch command or using the API of rrdtool. Tee other way to go would be doing the calculations based on the rrd_fetch command yourself, but why bother to do them if the first way usually already should provide them? Regards, BenBE. _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
