Nagios and passive checks

[Andreas Ericsson]

pshemko wrote:
>>I think the default buffer size is 4kb.  You could try recompiling
>>Nagios to use a bigger buffer and that might provide the quickest
>>fix.
> 
> 
> BTW, I couldn't find the buffer size (for the pipe) anywhere in the sources,
> do you know where is it defined?
> 

It's in the kernel. Nagios has no control of how much data is buffered 
in a FIFO.

> 
>>You could also look at the command_check_interval setting in the
>>main configuration file, but you might have to fiddle with the
>>interval_length to get any benefit out of that.
> 

interval_length does nothing for passive checks. Try instead setting 
command_check_interval=-1 in your main config file (check for external 
commands as often as possible).
I don't know if this works with Nagios 1.x, but if you're mainly using 
passive checks I expect it should be safe to use 2.0, since you wouldn't 
need the broken embedded perl parser.

> 
> Regards
> Pshemko
> 

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


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