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 Josh Konkol
> Sent: Tuesday, June 06, 2006 1:37 PM
> To: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] Host check doesn't wait in-between checks.
> 
> Kyle Tucker <kylet <at> panix.com> writes:
> 
> >
> > >
> > > What is the point of setting a Host max_check_attempts if
> Nagios isn't going to
> > > wait in between checking?
> >
> > I too wish I had more time between host checks and you've prompted
me
> > to try something in my check_alive script. Would this snippet do the
> > trick?
> >
> > TIMEGAP=10  # number of seconds before host checks
> >
> > if [ $HOSTSTATE$ = "DOWN" -a $HOSTSTATETYPE$ = "SOFT" ]
> > then
> > 	sleep $TIMEGAP
> > fi
> >
> > exit 2
> >
> > I would have used ...
> >
> > if [ $HOSTSTATE$ = "DOWN" -a $HOSTATTEMPT$ -lt
> $MAXHOSTATTEMPT$ ]
> > then
> > 	sleep $TIMEGAP
> > fi
> >
> > ... but oddly there seems to be no $MAXHOSTATTEMPT$ macro.
> >
> 
> 
> OK so the simple solution would be to change my check-host-command
> to include a sleep 10 at the end.  i.e.:
> 
> $USER1$/check_ping -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100%
> -p 3 && sleep 10
> 
> You think that would work?


Probably but be aware that if you have a significant outage you may be
introducing possibly unacceptable delays in your monitoring data
freshness. Using your example of 3 pings, 10 second sleep and 3 max host
checks, if you have 10 hosts go down at the same time you have
introduced 6.5 minutes of delay for that round of service checks ((3+10)
* 3 * 10 = 390s). It may be possible to eliminate some/all of that
through the use of the parents directive depending on your network
infrastructure. From personal experience you want your monitoring data
to be as up-to-date as possible when you're fixing an issue. 

--
Marc


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