Question about NEB

Hendrik Baecker b00mer at gmx.net
Tue Oct 18 12:29:01 CEST 2005


Hi Andreas,

thanks, that was what I want to know.

Hendrik

Andreas Ericsson schrieb:

> Hendrik Baecker wrote:
>
>> Hello List,
>>
>> I've got a question about NEB.
>>
>> Are they handled by nagios like service_checks? Specially, does the 
>> nagios reaper waits for the NEB-module after an callback?
>>
>
> Calls to NEB-modules are stateful and take place in whatever thread is 
> appropriate. There are no pthread_create(neb_function) calls anywhere 
> and the neb-modules functions are in every aspect identical to in-core 
> functions in Nagios.
>
>> As far as I know works nagios like this:
>>
>> nagios forks to execute a service check and after executing the 
>> forked nagios dies. After some time the nagios reaper comes to get 
>> the service_check results. So in this case there are two calls for 
>> one service check.
>>
>
> If by "calls" you mean neb-api calls then yes. Nagios calls it once to 
> tell the NEB it's about to run a service check and then once more when 
> the service check has been reaped.
>
>> So if I write a NEB to get some informations with the nagios callback 
>> has the nagios core to have an answer from the NEB like "data 
>> successfully processed by NEB" or does the data has just goes through 
>> the neb api to the neb and that's it?
>>
>
> It just goes through the api and that's it.
>
>> Sorry for bad english but I hope that someone gets what I mean.
>>
>> Bye
>> Hendrik
>>
>>
>>
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>



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