[Xymon] RRD change from 5 minutes to 1 minute

Scot Kreienkamp Scot.Kreienkamp at la-z-boy.com
Wed Sep 23 05:25:22 CEST 2020

Hi Ralph,

The documentation is wrong.  I ended up figuring it out after several hours of trial and error.  It shows -s 60 should work but the code doesn’t account for the space.  It MUST be -s60 (without the space) or it will error out every time.  I ended up adding RRA:AVERAGE:0.5:1:3000 to the existing default config which should cover slightly more than two days worth of 1 minute datapoints.  That will give the 2 day graphs the detailed resolution I want to see, beyond 2 days the existing config is ok.  And yes, you’re right about the existing data.  I had to delete all my RRD’s and let xymon create them again and start populating them from scratch.  I tried to do the RRD export and import but the changes resulted in an RRD that had no data anyway, so I just went the delete them all route.  So far I have 24 hours of data.  When I get past 48 hours I should know if there are any repercussions, but since I haven’t modified the existing RRA’s I don’t expect any.

Hopefully this will help someone else.

Scot Kreienkamp | Senior Systems Engineer | La-Z-Boy Corporate
One La-Z-Boy Drive | Monroe, Michigan 48162 | • 734-384-6403 | |  • 1-734-915-1444  | • Scot.Kreienkamp at la-z-boy.com

From: Ralph M <ralphmitchell at gmail.com>
Sent: Tuesday, September 22, 2020 11:10 PM
To: Scot Kreienkamp <Scot.Kreienkamp at la-z-boy.com>
Cc: xymon at xymon.com
Subject: Re: [Xymon] RRD change from 5 minutes to 1 minute

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You might be able to use rrdtune to alter the step value, but that may be just the tip of the iceberg.  For example, what happens to existing data in the RRD?  What about new RRDs created by Xymon?  Do the graph definitions need to change for display?  &c

Ralph Mitchell

On Mon, Sep 21, 2020 at 3:34 PM Scot Kreienkamp <Scot.Kreienkamp at la-z-boy.com<mailto:Scot.Kreienkamp at la-z-boy.com>> wrote:
I run most of my tests every 60 seconds.  Does anyone know how to change the RRD graph default to accept data every 1 minute instead of every 5 minutes?

Scot Kreienkamp | Senior Systems Engineer | La-Z-Boy Corporate
One La-Z-Boy Drive | Monroe, Michigan 48162 | • 734-384-6403 | |  • 1-734-915-1444  | • Scot.Kreienkamp at la-z-boy.com<mailto:Scot.Kreienkamp at la-z-boy.com>
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