Question about event handler processing

[Ethan Galstad]

Horvath Tamas wrote:
> Hi Listmembers!
> 
> Now I'm using Nagios 1.x, but I'm going to "upgrade" them to 2.x soon.
> 
> I set up global host and service event handlers which increment the content
> of a file. The number in this file is a uniq error ID, which I use in my
> notification scripts.
> 
> But I don't know how Nagios runs global event handlers if several
> services/hosts change their status nearly the same time. Does it run them
> serially, or paralell?
> 
> It is important for me, because if more than one event handler have to read
> and write to the same file, I can write some locking mechanism.
> 
> Do you have any info or idea about this?
> 
> I don't speak "C", so please not say: "looking into xxx.c code".
> 
> Any help would be appreciate.
> 
> Tamas.
> 

Hi Tamas -

Event handlers are run in serial.  So are notifications, OCSP commands, 
etc.  The only things that are run in parallel in Nagios 1.x/2.x are 
service check commands.  Hope that helps.


Ethan Galstad,
Nagios Developer
---
Email: nagios at nagios.org
Website: http://www.nagios.org

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