[omd-users] writing a time series check

James Todd james.todd at jivesoftware.com
Tue Jun 7 09:51:10 CEST 2011

Hey Mathias -

  Based on a bit of searching, I believe what I am looking for is to execute an rrdtool.fetch(...) operation from within a check, passing along the correct rrd path.

  In searching through the default checks (as deployed via omd) i don't see any uses of rrd* from within the check scripts.

  Am I on the right path here? wrong path? regardless, I could use a pointer on how best retrieve historic data from within a check in order to perform a time-series

  thx in advance,

- james

On Jun 6, 2011, at 12:26 AM, Mathias Kettner wrote:

> Hi James,
> please have a look at this:
> http://mathias-kettner.de/checkmk_writing_checks.html
> Am 05.06.2011 21:01, schrieb James Todd:
>> hi -
>>   i am new to omd/check_mk/nagios/python. i have the basics up and running and am collecting data from our application nodes. what i would like to now do is perform a time-series check and as such could use a pointer.
>>   i am not sure "time series" check is the correct terminology so let me describe what i would like to achieve at a bit of a higher level, specifically:
>>     for a given check "a"
>>     when this check is performed, i would like to retrieve previously captured values and perform a calculation against the set
>>     eg: check if we counter-x has not increased more then y% over the last 30 minutes then return critical
>>   i assume this is done via accessing the rrd data. i will continue to dig in and research but at the same token i very much appreciate more directed help those on this list can offer.
>>   thx in advance,
>> - james
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