service checks running too often

[Mike Guthrie]

On 12/13/2012 12:38 PM, Mark Keisler wrote:
> I understand that nagios dynamically adjusts service check times, but 
> the puzzling thing is that there is a check that runs every 5 minutes 
> but then an extra or two in between.  And yes, the web interface shows 
> the next service check as 5 mins out and yet another runs before that 
> time hits.
Is there any chance that there could be a second instance of Nagios 
running?   Look for multiple *parent* processes from the following

#modify the nagios binary path to match your system

ps aux | grep /bin/nagios

/etc/init.d/nagios stop

killall -9 nagios

/etc/init.d/nagios start



>
>
> On Thu, Dec 13, 2012 at 10:24 AM, Mike Guthrie <mguthrie at nagios.com 
> <mailto:mguthrie at nagios.com>> wrote:
>
>     Although some of those start times do seem close together, it's
>     important to know that the check_interval in Nagios is not
>     necessarily a hard number. Nagios is continually adjusting and
>     recalculating the check schedule, so if you need a check to run on
>     a hard 5mn schedule, you might be better off using cron, and then
>     pushing the result to Nagios passively.
>
>     With that said, access the service details for this service. When
>     new results come in does the scheduler set the Next Check 5mn out
>     as expected?
>
>
>
>     On 12/13/2012 9:43 AM, Mark Keisler wrote:
>>     I'm running Nagios 3.4.1 on RHEL6. I have an issue where I have a
>>     poller (service check) that is running too often and I am not
>>     sure why. I have "service_check_timeout=180" because I had
>>     trouble with the poller running long. Relevant settings for the
>>     service check:
>>
>>             check_period                    24x7
>>             max_check_attempts              1
>>             normal_check_interval           5
>>             retry_check_interval            5
>>
>>     I also set up a tracking logger in the poller to record
>>     "timestamp PID started by PPID : Poll [Start|End] of poller"
>>     2012-12-12_12:26:38 19448 started by 19442 : Poll Start of poller
>>     2012-12-12_12:27:13 19448 started by 19442 : Poll End of poller
>>     2012-12-12_12:28:14 19931 started by 19930 : Poll Start of poller
>>     2012-12-12_12:30:14 19931 started by 19930 : Poll End of poller
>>     2012-12-12_12:31:37 20467 started by 20460 : Poll Start of poller
>>     2012-12-12_12:33:15 20949 started by 20946 : Poll Start of poller
>>     2012-12-12_12:33:15 20467 started by 20460 : Poll End of poller
>>     2012-12-12_12:33:41 20949 started by 20946 : Poll End of poller
>>     2012-12-12_12:36:38 21483 started by 21478 : Poll Start of poller
>>     2012-12-12_12:38:14 21971 started by 21964 : Poll Start of poller
>>     2012-12-12_12:39:17 21483 started by 21478 : Poll End of poller
>>     2012-12-12_12:39:18 21971 started by 21964 : Poll End of poller
>>     2012-12-12_12:41:38 22500 started by 22492 : Poll Start of poller
>>     2012-12-12_12:42:19 22500 started by 22492 : Poll End of poller
>>     2012-12-12_12:43:14 23003 started by 22999 : Poll Start of poller
>>     2012-12-12_12:45:20 23003 started by 22999 : Poll End of poller
>>     2012-12-12_12:46:37 23540 started by 23535 : Poll Start of poller
>>     2012-12-12_12:48:14 24025 started by 24024 : Poll Start of poller
>>     2012-12-12_12:48:20 23540 started by 23535 : Poll End of poller
>>     2012-12-12_12:48:41 24025 started by 24024 : Poll End of poller
>>     2012-12-12_12:51:38 24558 started by 24554 : Poll Start of poller
>>     2012-12-12_12:53:14 25044 started by 25041 : Poll Start of poller
>>     2012-12-12_12:54:35 25044 started by 25041 : Poll End of poller
>>
>>     As you can see, I start to get overlapping pollers. I don't
>>     understand why this would happen. Any hints or clues?
>>
>>
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>
>
>     -- 
>
>
>     Mike Guthrie
>     Technical Team
>     ___
>     Nagios Enterprises, LLC
>     Email:mguthrie at nagios.com  <mailto:mguthrie at nagios.com>
>     Web:www.nagios.com  <http://www.nagios.com>
>
>
>     ------------------------------------------------------------------------------
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>
>
>
>
> ------------------------------------------------------------------------------
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>
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-- 


Mike Guthrie
Technical Team
___
Nagios Enterprises, LLC
Email:  mguthrie at nagios.com
Web:    www.nagios.com

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