Database stores and distributed monitoring

[Ben]

I'm fairly new to Nagios, but I installed it for my home network a week or
two ago and I liked it a lot. So much so that I jumped at the chance to
use it for monitoring 2500 of my servers at work. Needless to say, I
quickly found out that monitoring 2500 servers is a little more demanding
of resources than monitoring 6. :)

So, to try to keep the CGI performance from sucking so badly, I thought
moving the data store into postgres and out of flat files would help. And
it did, but not enough. So now, even though I'm using a quad xeon with 4GB
of ram for the nagios machine (the database lives elsewhere), now I'm
thinking that maybe I should set up a distributed monitoring scheme too.

But I'm a bit confused. If the distributed monitoring software can write 
data into a database, and the CGIs read data out of the database.... do I 
need to use the nsca tool to do passive service checks?



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