More passive problems

Dan Rich drich at employees.org
Sun May 11 04:44:23 CEST 2003


Jamie Baddeley said:
> decrease service_reaper?
> or external_command_check interval to -1?

Service_reaper is currently set to 10s, and external_command_check is already
set to -1.

> On Sun, 11 May 2003 07:20, you wrote:
>> I am concerned with the way Nagios appears to handle passive alerts.  As I
>> mentioned before, I am using a script to monitor a system farm of several
>> hundred machines.  Every five minutes this script submits passive checks
>> for each machine into Nagios.
>>
>> Doing the above I frequently see many (for large values of many, sometimes
>> > 100) of Nagios processes that are blocked on a lock file in the var
>> directory. It looks like this is due to the process that is reading the
>> passive checks from the named pipe.  However, this has frequently led to
>> system loads over 100, and this morning brought the system to a griding
>> halt.
>>
>> Does anyone have any idea why the passive checks are causing this problem?
>> If I stop the cron job that generates the checks and restart Nagios the
>> load goes away and doesn't return.  By whole point in doing this in the
>> first place with passive checks was to avoid the load on the system caused
>> by hundreds of processes having to run every few minutes, but that seems to
>> have backfired.
>
>


-- 
Dan Rich <drich at employees.org> |   http://www.employees.org/~drich/
                               |  "Step up to red alert!"  "Are you sure, sir?
                               |   It means changing the bulb in the sign..."
                               |          - Red Dwarf (BBC)



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