Nagios check frequency

[Deborah Martin]

Wadud,

Surely, a check frequency of 60 minutes is not a good idea since, it could be that the node has been down for an hour before anyone knows anything about it ?  

I would recommend checking every 10 minutes to start with since that is the frequency you'd want to check if it was a NON-OK status anyway. You can set your notifications to be a longer period between checks which is how I configure Nagios. 

We check a database every 20 minutes for example, for RAM usage,  but only notify every 4 hours. So, users still get the initial alert that ram usage has breached a threshold but are only reminded every 4 hours. And of course, if there is a recovery  to an OK status within that 4 hours, 
users would be emailed as well. 

It works well for us and doesn't bombard users with emails either which means they are less likely to filter nagios alerts into the "Deleted" email folder. 

Of course, you probably have an excellent reason for only checking every 60 minutes which I haven't thought of so this is really just my tuppence worth....! 

Regards,
Deborah  

-----Original Message-----
From: Wadud Miah (ITCS) [mailto:W.Miah at uea.ac.uk] 
Sent: 23 January 2012 12:24
To: Andreas Ericsson; Nagios Users List
Subject: Re: [Nagios-users] Nagios check frequency

Hi Andreas,

Thanks for the reply. The retry_interval will retry to ensure the service is actually down, which is the case here. This is set to three in my configuration. However, once it exceeds retry_interval and the service is deemed as not-OK, it is then that I want it to increase the check frequency. I couldn't find anything in the documentation.

Regards,
Wadud.

>-----Original Message-----
>From: Andreas Ericsson [mailto:ae at op5.se]
>Sent: Monday, January 23, 2012 12:20 PM
>To: Nagios Users List
>Cc: Wadud Miah (ITCS)
>Subject: Re: [Nagios-users] Nagios check frequency
>
>On 01/23/2012 12:48 PM, Wadud Miah (ITCS) wrote:
>> Hello Nagios users,
>>
>> I would like Nagios to increase the check frequency once the service 
>> is in a critical state. For example, if a check has a frequency of 
>> every 60 minutes, once it has reached a critical state, I want the 
>> check frequency to run at, say, every 10 minutes until the check has 
>> reached an OK state.
>>
>
>Use retry_interval.
>
>> I have set the max_check_attempts to three, and wanted to know if 
>> this is the case when nrpe times out. Does it check nrpe checks 3 
>> times even if it times out on the first attempt?
>>
>
>That depends on how you've configured it. Timeouts doesn't matter in 
>the slightest for Nagios' scheduling logic though, so it will run the 
>check 3 times if that's what you've configured.
>
>--
>Andreas Ericsson                   andreas.ericsson at op5.se
>OP5 AB                             www.op5.se
>Tel: +46 8-230225                  Fax: +46 8-230231
>
>Considering the successes of the wars on alcohol, poverty, drugs and 
>terror, I think we should give some serious thought to declaring war on 
>peace.

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