Problem with host objects behavior..

[Marc Powell]

Host checks are only performed when and if a service check on that host fails. You must therefor have at least one service  defined for each host. It can be as simple as a ping service. Since nagios is primarily service based, host checks are only used to determine if an outage is caused by a service being down (I.e. http) or the entire host.

Marc

-----Original Message-----
From: Gilles Poiret <gilles.poiret at noos.fr>
To: nagios-users at lists.sourceforge.net <nagios-users at lists.sourceforge.net>
Sent: Sun Oct 06 12:49:33 2002
Subject: [Nagios-users] Problem with host objects behavior..

Hi everybody,

I'm several problems with Hosts objects : 

- hosts checks.
When no services are defined, no hosts checks are performed.
Result : status is "pending" since 2 days, while host is ok and plugin works "by hand"
Result 2 : status is "down" since 2 days, while host is ok (IP address that I defined in first move was not the right one..)

When and how hosts checks are performed ? 

- networks outages
My configuration : 
root : "father" of router1
router1 : "father" of host1, host2, router2
router2 : "father" of host3, host4

when router1 is discovered down, a network outage is flaged.
-> on status map, a red line links router1 to its hosts "sons".
BUT : 1-"sons" host are said ok, 
      2-no outages are detected about router2 (it's a router1 son)
	 (logical, in my mind, due to 1- .. but no a good thing !) 
 
Normal ?

- hosts checks when services are down

When a host down, I received services alerts for it, and if the downtime is long enough, i receive the host alert.
I beleived that when services checks returned a trouble, a host check was performed and if a host problem was detected, only the host notification was sent..

That's not the case ? 
Is this a configuration problem ?

Thanks for advance.

-- 
Gilles Poiret


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