Nagios and a Real time performance issue (for a huge undertaken)

[Andreas Ericsson]

sushilkumar wrote:
> Hi nagios community,
> 
> I want start a new issue regarding with the nagios hosting in a huge
> network environment. If I use nagios to monitor hundreds of hosts &
> thousnads of services don't you fill it will consume a large network
> bandwidth & it will quickly flood all our network backbone with the packets
> flowing all the way freely & while at the same time with the
> acknowledgement & output packets sent by different host & services.
> 
> again How we can forget the refresh rate of 90 seconds (which itself means
> all the stuff is going to be checked after each 90 seconds). also there is
> one strange feature of nagios service check "when a particular service is
> not in the o.k state at first check & it will get 3 chances".
> 
> There is a concept of parallelized check but, i think it is not enough 
> justifyable analytically.
> Anybody can statstically (analytically) justify the things?
> 

Common sense and use of mathematics indicates that checks need to be 
parrallelized if checks*timeout < retry_check_interval*timing_interval, 
otherwise Nagios simply won't have time to finish all the checks you ask 
it to do, and things will lag behind horribly. Naturally, one check 
isn't run in parrallel with itself, but rather PING on host1 is run at 
the same time as HTTP on host2 (or something similar).

I believe your other questions were answered in a different email.

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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