[rrd-users] Post to individual data sources with multiple update requests

[Sandy Breeze]

Steve's right.  Separate RRD's would be the way forward to ensure DS consistency.  As a suggestion, why not write something which scrapes these RRD's periodically and collates the last DS value and drops it into a single RRD with multiple DS's…?

I've always found RRDTool::OO to be particularly friendly

From: Steve Shipway <s.shipway at auckland.ac.nz<mailto:s.shipway at auckland.ac.nz>>
Date: Thursday, 17 October 2013 21:22
To: 'Patrik Åkerfeldt' <patrik.akerfeldt at gmail.com<mailto:patrik.akerfeldt at gmail.com>>, "'rrd-users at lists.oetiker.ch<mailto:'rrd-users at lists.oetiker.ch>'" <rrd-users at lists.oetiker.ch<mailto:rrd-users at lists.oetiker.ch>>
Subject: Re: [rrd-users] Post to individual data sources with multiple update requests

>I would like to have one RRD file with all my indoor temperatures. One DS per room. My problem
>is that I receive temperature updates as individual events, thus I would like to update the DS's in
>the RRD file with individual update calls.

For this application, you need to have separate RRD files.  You can still make a single graph holding data from multiple files; however since the data are coming in at different points in time, and you cannot add a vector to the RRAs until you have all the elements, you should have one RRD per sample.

Steve

________________________________
Steve Shipway
ITS Unix Services Design Lead
University of Auckland, New Zealand
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