Host check doesn't wait in-between checks.

[Marc Powell]

> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net [mailto:nagios-users-
> bounces at lists.sourceforge.net] On Behalf Of Samba
> Sent: Friday, June 02, 2006 10:53 AM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] Host check doesn't wait in-between checks.
> 
> I'm running Nagios 2.3.1.
> 
> I'm running into this scenario:  When a host goes down I've noticed
that
> the Host checks aren't waiting for any period of time between the host
> alive checks.  Below is a recent occurance:
> 
> [06-01-2006 16:43:12] HOST ALERT: arlingtonrouter;DOWN;HARD;3;CRITICAL
-
> Time to live exceeded (10.57.32.254)
> Host Down
> [06-01-2006 16:43:10] HOST ALERT: arlingtonrouter;DOWN;SOFT;2;CRITICAL
-
> Time to live exceeded (10.57.32.254)
> Host Down
> [06-01-2006 16:43:10] HOST ALERT: arlingtonrouter;DOWN;SOFT;1;CRITICAL
-
> Time to live exceeded (10.57.32.254)
> 
> I have the host retries at 3 and you can see that it tried 3 times but
> there was no waiting in-between tries.
> 
> Anyone have any ideas?

That is expected and desired behavior. Host checks are done serially,
not in parallel fashion like service checks. While host checks are being
performed all other activities such as service checks and notifications
stop until the state of the host is definitely determined (i.e. in a
HARD state). It is therefore important that the host check completes as
quickly as possible so that nagios can move back into parallel operation
mode.

http://nagios.sourceforge.net/docs/2_0/networkreachability.html details
some of the benefits of this.

--
Marc


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