[op5-users] merlin & "duration" in nagios

[Andreas Ericsson]

On 10/16/2009 03:37 AM, Russell Jennings wrote:
> So, i finally figured out that making the checks on the NOC be
> ACTUALLY passive checks gives me what i want (going unknown if no
> data is received for n seconds). before i just had the active check
> run every 5 minutes (which was a simple script that generated the
> unknown state) and had the nagios poller's active check be every 3
> minutes... i figured at the time that it was an ok setup, but i've
> found setting them to be passive is a much cleaner solution.
>
> Anyway, there is one thing i'm not sure is due to merlin or not. but,
> if a service check starts out as unknown, then 4 minutes later merlin
> updates the state, it still keeps the the counter running from
> before, so it now has a duration of OK for 4 minutes, which is
> clearly incorrect. this isn't when it starts out only as unknown,
> before when i was doing my crazy active checks for passive results, i
> had the node offline for a spell. so, those services were in a
> critical state for 8 days. when i brought the poller node back
> online, all the checks went OK, but it kept the duration counting...
>

I'm aware of this issue, and I'm working on correcting it as quickly
as possible. If you're using the Ninja frontend, this already works
as intended, since the Merlin daemon on the NOC system will update
the database properly even though the internal state of the Nagios
system on the NOC isn't properly adjusted.

I might actually have this functionality ready later today. I'll
make sure to announce it here when I do, so stay tuned.

Thanks for your thorough testing and reports. They're extremely
helpful to us in our planning work.

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

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