Nagios scheduling issues

[Edy Gasparini]

Guys,

Have got Nagios 1.2 running on RedHat Enterprise Linux 3 (RHEL3), with MySQL
support/backend. With a small number of hosts/services (say <10), scheduling
works as expected, based on check_interval values.

However, now I have 34 hosts and 760 service checks and the scheduling is
screwed badly. Checks are being scheduled 60 mins or so apart (with
check_interval = 2)

I originally had: 

inter_check_delay_method=s
service_interleave_factor=s
max_concurrent_checks=0

I've since changed from smart to set figures, as described in the Nagios
doco, with no change.

Check latency is currently displaying 

3206 / 3935 / 3635.479 sec

Performance info says:
<= 1 minute: 0 (0.0%) 
<= 5 minutes: 28 (3.6%) 
<= 15 minutes: 127 (16.5%) 
<= 1 hour: 628 (81.5%) 

Does anyone have a guide on correctly tuning Nagios for large deployments?

thanks and regards,
Edy Gasparini, Lead Security Specialist
Security Services | Southern Star Technology | National Australia Bank
+61 3 9886 2404 



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