check_freshness detecting staled services in alphabetical order

Thomas Guyot-Sionnest dermoth at aei.ca
Tue Jul 15 12:15:28 CEST 2008


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On 14/07/08 04:40 PM, Marcel wrote:
> Hey,
> 
> Have any of you have seen anything like this before?
> 
> Nagios 2.9, ndoutils 1.4b4.
> 
> Nagios began to detect staled services in alphabethical order, in
> batches of almost 400 hosts at a time.
> 
> check_service_freshness=1
> service_freshness_check_interval=900
> check_host_freshness=0
> host_freshness_check_interval=900

Freshness checking is a scheduled event that runs every 30 seconds or so
(configurable). If you define passive checks with freshness checking and
nothing updates them, then they'll all become stale around the same time
and the loop will likely pick them up at the exact same time.

So unless you have external processes updating these services (people
usually use nsca to perform this from remote hosts) this is the expected
behaviour ;).

Thomas
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