About notification procedure

[Marc Powell]

> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net [mailto:nagios-users-
> bounces at lists.sourceforge.net] On Behalf Of Yu Watanabe
> Sent: Wednesday, May 07, 2008 2:30 AM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] About notification procedure
> 
> Hello,
> 
> I would like to get an advice regarding to the host and service
notification
> procedure.
> 


> My question is why there wasn't any notification after the line 3447?
> 
> I have searched the document(Nagios 2.x) for this issue but I couldn't
> find a description which describes,
> "Why Nagios does not send Service Notification if there were an Host
Hard
> Status changes before the Service Alert?"

http://nagios.sourceforge.net/docs/2_0/networkreachability.html

"Monitoring Services on Down or Unreachable Hosts

The main purpose of Nagios is to monitor services that run on or are
provided by physical hosts or devices on your network. It should be
obvious that if a host or device on your network goes down, all services
that it offers will also go down with it. Similarly, if a host becomes
unreachable, Nagios will not be able to monitor the services associated
with that host.

Nagios recognizes this fact and attempts to check for such a scenario
when there are problems with a service. Whenever a service check results
in a non-OK status level, Nagios will attempt to check and see if the
host that the service is running on is "alive". Typically this is done
by pinging the host and seeing if any response is received. If the host
check commmand returns a non-OK state, Nagios assumes that there is a
problem with the host. In this situation Nagios will "silence" all
potential alerts for services running on the host and just notify the
appropriate contacts that the host is down or unreachable. If the host
check command returns an OK state, Nagios will recognize that the host
is alive and will send out an alert for the service that is
misbehaving."

Since you've disabled host notifications, no-one is notified.

--
Marc



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