Multiple Nagios proccesses running.

[Andreas Ericsson]

Brian Murphy wrote:
> 
> Hi Guys
> 
> I see this too in my 2.0b4 instance. I suspect they extra processes are forked 
> passive check processors in my case trying to pass back results to the master 
> process but ending up in a state where it never happens.
> 
> This after trying to follow my way through the code and running strace and 
> truss on the nagios - and child processes.
> 
> Some of the extra processes dissappear but not all of them, if we leave it 
> overnight it will stop our overspecced proliant.
> 
> This is not a daemon starting issue but a check result processing issue.
> 
> Any suggestions how to address this?
> 

Two methods have been suggested and prototyped.
Either fire up the checking-threads via fork(), dup() execve() and 
multiplex all checks, or run a separate thread (as opposed to a fork()) 
for each check and use shared memory for inter-thread communication. 
With some sort of limit on the number of pending check-results this 
could be done fairly easily. Each thread could even handle the results 
themselves, provided proper locking is in place.

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


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