event broker -> SQL questions

[Andreas Ericsson]

Ben wrote:
> Thanks for the stabs.... comments below.
> 
> On Oct 14, 2004, at 12:18 AM, Andreas Ericsson wrote:
> 
>> I'll take a stab at the rest.
>>
>> Titus Anderson wrote:
>>
>>>> What is the logic behind these values?
>>>> has_been_checked
>>
>>
>> Hosts and services aren't necessarily being checked. If a host is 
>> being determined as unserviceable (down or unreachable), the rest of 
>> the services aren't being checked, and likewise with parent/child 
>> relations (at least in the future).
> 
> 
> It seems to me that a {HOST,SERVICE}_STATUS event would only be fired 
> after the check had happened, so that would imply that this would always 
> be true if it was what you think it is. But that wouldn't make for a 
> useful datapoint, so I think we are both confused. :)
> 

I think Nagios just dumps all the data in the object struct to whatever 
is listening in the receiving end and doesn't differ between if the data 
passing takes place as the result of a timed event or as the result of 
some sort of state change. I know modules can schedule data to be passed 
at regular intervals as well as on events, so I guess that must be the 
answer.

>>>> current_notification_number
>>>>
>>
>> Umm... The current notification number? It can send several you know. ;)
> 
> 
> :) Yeah, but is a global number for nagios, or just for this particular 
> host/service? Would checking this provide a mechanism to detect 
> duplicate events? Even better, could I ignore all events with 
> notification numbers lower than the last one?
> 

Nagios doesn't keep global numbers of notifications, so it must be for 
the object.

>>>> scheduled_downtime_depth
>>
>>
>> With 2.0 you can schedule downtime for hosts and its children in any 
>> number of generations. I think this shows how many layers below that 
>> are being scheduled because of this particular one.
> 
> 
> I don't understand.... but that's ok, I understand enough to know that I 
> can ignore this for now. :) My SQL inserts are only to speed up the CGIs 
> and reports.
> 

I'm really interested in having a look at what you've done. Perhaps I 
can improve it somehow and we could both benefit from it. Is it GPL'd or 
do you have some proprietary copyright on it?

>> On a sidenote; I sure hope Ethan gets to writing developers 
>> documentation someday soon. It should really simplify the contrib 
>> development.
> 
> 
> Yes indeed.
> 

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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