Question about NEB

[Andreas Ericsson]

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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-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231


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