nagios && rrd

[Carroll, Jim P [Contractor]]

Those are, indeed, compelling arguments.  Of course, were it a simple matter
to do integrate RRDs into Nagios, the present groundswell for some sort of
relatively painless integration (thus excluding APAN) would not exist.

In defense of relational databases:

- the database server could exist on another host
- the database server could collect data from the start, and not be forced
to expire data which exceeds a time period defined at the moment of creation
- queries could be for arbitrary 'from' and 'to' dates/times and graphed in
kind

I'm not saying that MySQL/JpGraph is The Way To Go, but like all things
Nagios (and in Perl, and in other things): TMTOWTDI  :)

About a year ago (before I started working on installing Nagios here), one
of my associates installed LARRD on our Big Brother system.  He indicated it
was pretty simple to do, and the results were impressive.  If there were a
LARRD-like solution for Nagios, we could return to the more banal questions
du jour.  ;)

If I were to envision a LARRD-like solution for Nagios, then missing RRDs
would be created whenever Nagios was restarted, and default values for each
class of service would be more than sufficient for most sites.

jc

> -----Original Message-----
> From: Stanley Hopcroft [mailto:Stanley.Hopcroft at IPAustralia.Gov.AU]
> Sent: Tuesday, April 15, 2003 6:24 PM
> To: Carroll, Jim P [Contractor]
> Cc: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] nagios && rrd
> 
> 
> Dear Ladies and Gentlemen,
> 
> This little black ducks 0.02 worth (that's cents there folks) is that 
> RRDs are superior to databases for __time series__ data because
> 
> . leading software such as MRTG, Orca, Ntop and so on have made that
> conclusion, in some cases switching from other means of data 
> persistence
> (mySQL for Ntop)
> 
> . RRDs have a fixed size
> 
> . RRDs automatically deal with exceptions (data that is too large or 
> small) and missing data (by interpolation). The update 
> application would 
> have to deal with these cases otherwise
> 
> . have built in anomaly detection (Holt-Winters forecasting 
> in RRD dev 
> releases) that aids the identification of problems or faults for time 
> series that exhibit periodicity (eg a router interface that shows 
> a greater range of values and more variation during the 
> business hours 
> than otherwise exhibits diurnal periodicity)
> 
> . are popular with those developing network management 
> applications (Cacti, Cricket, RRDFrameWork)
> 
> Yours sincerely.
> 
> -- 
> --------------------------------------------------------------
> ----------
> Stanley Hopcroft
> --------------------------------------------------------------
> ----------
> 
> '...No man is an island, entire of itself; every man is a piece of the
> continent, a part of the main. If a clod be washed away by the sea,
> Europe is the less, as well as if a promontory were, as well as if a
> manor of thy friend's or of thine own were. Any man's death diminishes
> me, because I am involved in mankind; and therefore never send to know
> for whom the bell tolls; it tolls for thee...'
> 
> from Meditation 17, J Donne.
> 


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