[Xymon] RRD Graph stopped graphing

[Michael Beatty]

Thank you for your help, but it isn't working.  I've been playing around 
with everything I can think of, but I cannot get the graphs to display 
if I collect data in frequencies greater than 10 minutes.  I was briefly 
looking through the code and I found in do_rrd.c that the default 
interval for RRD is 300 seconds (5 minuets).  I cannot figure out a way 
to change this.  The closest I have come to getting this to work was to 
add a heartbeat value to the NCV_ setting in xymonserver.cfg file to: 
NCV_mytest=dataset:GAUGE:1800.  Then I was able to dump the XML using 
rrdtools, manually update the STEP to 900, and reload the rrd.  When I 
do so, I get a strange behavior that makes me think the 300 value that 
is hardcoded overrides the changes I made. When the first report comes 
in, the rrd file is created, the second report grabs the correct data, 
then the third report the last_ds value is populated with the previously 
correct data and the current value is set to "NaN" and that is the way 
it stays for all subsequent tests.

Ultimately my RRD looks like:

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE rrd SYSTEM "http://oss.oetiker.ch/rrdtool/rrdtool.dtd">
<!-- Round Robin Database Dump --><rrd> <version> 0003 </version>
     <step> 900 </step> <!-- Seconds -->
     <lastupdate> 1356032234 </lastupdate> <!-- 2012-12-20 14:37:14 EST -->

     <ds>
         <name> Shortterm </name>
         <type> GAUGE </type>
         <minimal_heartbeat> 1800 </minimal_heartbeat>
         <min> 6.0000000000e+02 </min>
         <max> NaN </max>

         <!-- PDP Status -->
         <last_ds> 1.080055 </last_ds>
         <value> NaN </value>
         <unknown_sec> 434 </unknown_sec>
     </ds>

     <ds>
         <name> Longterm </name>
         <type> GAUGE </type>
         <minimal_heartbeat> 1800 </minimal_heartbeat>
         <min> 6.0000000000e+02 </min>
         <max> NaN </max>

         <!-- PDP Status -->
         <last_ds> 1.080055 </last_ds>
         <value> NaN </value>
         <unknown_sec> 434 </unknown_sec>
     </ds>

Michael Beatty
Sherwin-Williams
IT Analyst/Developer
michael.beatty at sherwin.com
216-515-7374

On 12/18/2012 06:11 PM, Larry Barber wrote:
> man rrdtool. Or you can just redo what you did with to create the 
> custom graphs, but just change the time interval.
>
> Thanks,
> Larry Barber
>
> On Tue, Dec 18, 2012 at 2:56 PM, Michael Beatty 
> <Michael.Beatty at sherwin.com <mailto:Michael.Beatty at sherwin.com>> wrote:
>
>     How do I do that?
>
>
>     Michael Beatty
>     Sherwin-Williams
>     IT Analyst/Developer
>     michael.beatty at sherwin.com  <mailto:michael.beatty at sherwin.com>
>     216-515-7374  <tel:216-515-7374>
>
>     On 12/18/2012 02:13 PM, Larry Barber wrote:
>>     When you change the frequency of data collection you need to
>>     update your rrd definitions. The rrd databases are fixed length
>>     files, so you are leaving lots of blank entries between data points.
>>
>>     Thanks,
>>     Larry Barber
>>
>>     On Tue, Dec 18, 2012 at 11:42 AM, Michael Beatty
>>     <Michael.Beatty at sherwin.com <mailto:Michael.Beatty at sherwin.com>>
>>     wrote:
>>
>>         I had two custom RRD graphs setup and running fine on client
>>         systems.  The script that collects the data was running every
>>         minute.  After I finished testing, I changed the frequency of
>>         the scripts on the clients to 1 hour in the clientlaunch.cfg
>>         file. When I did, the RRD graph stopped displaying data.  It
>>         ran like this for a couple days.  I changed clientlaunch.cfg
>>         back to 1 minute... and the graphs immediately started
>>         graphing again.  Is there a minimum time frame that is
>>         needed, or something else that must be done?  What am I missing?
>>
>>         -- 
>>         Michael Beatty
>>
>>         _______________________________________________
>>         Xymon mailing list
>>         Xymon at xymon.com <mailto:Xymon at xymon.com>
>>         http://lists.xymon.com/mailman/listinfo/xymon
>>
>>
>
>
>


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