Andreas,
Here is an extract of my setup:
define servicegroup{
servicegroup_name nrpe_services
alias NRPE Services
}
define servicedependency{
host_name svxnagios02
service_description check_uname
dependent_servicegroup_name nrpe_services
notification_failure_criteria w,u,c
}
define service {
use unix_24_7
host_name svxnagios02
service_description check_uname
check_command check_nrpe_ssl!uname!0
notification_options c,r
process_perf_data 0
}
And a bunch of:
define service {
use unix_24_7
hostgroup_name
sol-servers,linux-servers,sol-zone-servers,sol-servers-with_hotspare
service_description CPU load
check_command check_nrpe_ssl!check_load!5,4,3!6,5,4
servicegroups nrpe_services
}
.....(3600 services within the nrpe_services service group)
Vincent Alloo
TI France Design Systems Operations Manager
Europe and Middle East IT Services
Texas Instruments France
E-Mail: [EMAIL PROTECTED]
Phone: +33 4 93 22 26 97
Mobile: +33 6 82 13 00 80
-----Original Message-----
From: Andreas Ericsson [mailto:[EMAIL PROTECTED]
Sent: Wednesday, November 19, 2008 12:56 PM
To: Alloo, Vincent
Cc: [email protected]
Subject: Re: [Nagios-users] Nagios 3.0.4 performance issue
Alloo, Vincent wrote:
> By removing all "servicegroups", my load is back to normal.
> I had all my NRPE services within the same service group in
> order to put in place a service dependency. It means 3600
> services within the same service group.
> It was causing the huge load seen on my machine.
> Is it a normal behavior, or is it a bug?
>
It's a bug, but in the configuration. A servicegroup with 3600
services cannot be used to create a sane servicedependency setup.
My guess is that you somehow managed to set a *lot* of service
dependencies for a *lot* of services, which in turn meant that
all of those dependencies had to be checked each time one of
the services had to be run. In short, before each service check,
a list with 3600 items was traversed. That would add quite a
substantial load on the CPU, so I'm not surprised.
Can you please copy-paste the servicedependency you had created
using this supersized servicegroup?
Thanks
--
Andreas Ericsson [EMAIL PROTECTED]
OP5 AB www.op5.se
Tel: +46 8-230225 Fax: +46 8-230231
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