Simple Host Monitoring - ICMP

Marc Powell marc at ena.com
Wed Jul 18 16:12:29 CEST 2007



> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net [mailto:nagios-users-
> bounces at lists.sourceforge.net] On Behalf Of Sean Keplinger
> Sent: Wednesday, July 18, 2007 8:44 AM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] Simple Host Monitoring - ICMP
> 
> 
> I have Nagios running on Linux monitoring around 500 hosts on our
network.
> For most of those hosts, we only need to know if they respond to a
ping.
> Since I've read that enabling "active host checks" may cause
performance
> problems, I made an "ICMP" service and assigned each server to it.
> 
> This works great save for one problem: If a host fails to respond to
the
> ICMP service check, it instantly jumps to the host check (which is
also a
> ping) and times out after 1 1/2 minutes (or 10 host check pings with
10
> second timeouts).
> 
> What I need is for it to behave like a standard service check, that is
to
> obey by the rules of the retry_interval. Is this possible?

It is behaving like a standard nagios-2 service check. If any service on
a host returns a non-OK result, the host is checked immediately. If the
host check fails, it goes critical immediately. I would advise disabling
host checks for those ping-only hosts to get the behavior you desire.
Nagios-3 introduces the behavior you are looking for.

--
Marc

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