Children "unreachable" on soft down?

[Andreas Ericsson]

Israel Brewster wrote:
> Does nagios (3.0.3) mark a child host as unreachable when its parent  
> enters a soft down state? I am finding myself getting repeated down  
> messages for a host (which is, in fact, down), even though I have  
> notifications set to only send a single message. Looking at the logs,  
> it would appear that what is happening is that the host is flipping  
> between "down" (which notifies me) and "unreachable" (which does not).  
> The parent host, however, never enters a hard down state. Looking at  
> the logs, what I see is that one ICMP check fails, throwing the host  
> into a soft down state, but the next one works just fine, bringing it  
> back to an up state.
> 
> The logic works fine for the parent host- since it never hits a hard  
> down state, it doesn't alert, and everyone is happy. But apparently  
> with the child host every time this happens, it switches from critical  
> to unreachable and back again, triggering a notification. Is there any  
> way to keep this from happening? Thanks.
> 

Doesn't flapping detection do what you want? You'd get a few
notifications, but they'd stop after the 3rd flip or something, I think.

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

Considering the successes of the wars on alcohol, poverty, drugs and
terror, I think we should give some serious thought to declaring war
on peace.

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