Services are dependent on the host they run on?

[Roberto Nunnari]

Hi Benny.


C. Bensend wrote:
>> Yesterday for instance, a host went down because of a hd controller
>> failure, and I received 22 sms..
> 
> I apologize if this has already been stated, I haven't been following
> this thread too closely.
> 
> When this happened, was the host down *in a network sense*, or was
> it just down in a user sense?  Ie, was it still pingable?

The host was not pingable.


> A situation I've dealt with in the past is that a host's network
> stack might still be "alive enough" (ie, pingable), while the host
> itself is sitting at a kernel panic or locked up.  In that case,
> if you're using ping for the host check, Nagios would have no way
> of knowing that the host is down, because it still responds.
> 
> In those [rare] cases, I've had to define a second command that
> requires a more intelligent response from a host, and then used
> that as the host check command.  Notable examples would be old
> school Sun machines, which are still pingable when they're sitting
> at the OK> prompt (ie, operating system is not running).

Thank you Benny, but this was not the case. The host was not pingable at 
that time.

I'm not 100% sure, but the problem maybe was maybe caused by a 
misconfiguration of the host/service check interval/max check attempts.

Best regards.
Robi

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