could not be performed due to a fork() error.

Marc Powell marc at ena.com
Wed Dec 19 14:44:24 CET 2007


On Dec 19, 2007, at 6:49 AM, Greg wrote:

> Hi,
>
> Greg a écrit :
>> Hi,
>>
>> I have installed and configured Nagios 3.0b7 to active check ~50  
>> hosts,
>> ~8 services / host.
>> The usage of "system" CPU is growing to 35% in 12 hours, at 35%  
>> Nagios
>> stop checking with this error in the log file :

How frequently are you checking these hosts/services? What type of  
plugins are you using to check them?

>> 'SSH' on host 'varan-01' could not be performed due to a fork()  
>> error.
>> The check will be rescheduled.
>>

I'd guess your box is running out of RAM/swap.

> Still having the problem. I started nagios this morning at 10:18, 3
> hours later nagios is using 1.6Go RAM !
>
> 15160 nagios    25   0 1702m 1.6g 2224 R   69 21.0  65:45.43 nagios
> 27665 nagios    25   0 1702m 1.6g  508 S   24 20.9   0:00.12 nagios


Taking a stab at it, do you have the embedded perl interpreter  
compiled in? There are known memory leak issues with it. Search for  
previous posts from Stanley Hopcroft for more information.

> and fork for each check.

This would be normal.

> What's the hell ?

Smells like a memory leak. You shouldn't act too surprised when using  
beta, non-production quality software. Problems are to be expected.

--
Marc


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