nagios.cmd write order (cronological?)

[Marcel Mitsuto Fucatu Sugano]

On Wed, 2006-08-09 at 15:56 -0700, Patrick Morris wrote:
> On Wed, 09 Aug 2006, Marcel Mitsuto Fucatu Sugano wrote:
> 
> > Hi,
> > 
> > Nagios 2.5, SuSE9.3.
> > Syslog-ng 1.6.8.
> > 
> > I am configuring some passive checks to be transported by syslog-ng.
> > 
> > So i've configured syslog to write directly to nagios.cmd. Everything
> > working fine, but as we are receiving check results from diferent
> > distributed nagios servers, I wonder if whether or not msgs written at
> > nagios.cmd has to be cronological. I mean, if some distributed server
> > lost the synchronization with ntp, and the epoch time of one msg gets
> > written to the nagios pipe with a timestamp lower than the one before
> > that, will Nagios drop the delayed check result? 
> > 
> > Thanks for any comments on this matter.
> 
> Timestamps are important, but the order isn't.
> 

By observation, it shows that timestamp and arrival (written) order does
matter! Does anyone else knows anything about concurrent writes to
nagios.cmd? Syslog-ng and nsca are writing to nagios.cmd pipe, but nsca
is configured to append mode.

TIA,

Marcel


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