Design question

[Sean McAfee]

Hoot, Joseph wrote:
> I've implemented both solutions here.  I ran the failover model first
> and ran it for about 2 years.  Now, I run both redundantly checking but
> just without notifications on the secondary.  I do this so that in the
> event that I want to check that my performance metrics (ala rrd graphs)
> are seeing the same information, I cant easily just go to my secondary
> and check what it looks like there.
>
> But yeah... read up in the documentation because there are good examples
> of setting it up either way.
>
If you want to get creative, you can do hybrids as well.  That way 
"slave" servers perform all the checks on their local facility, then 
send the results to the master, but should the master go down, slaves 
take over notifications.  This has a ton of benefits when writing 
firewall rules, monitoring "public" hosts/services, adding more 
facilities, and so on.

I'm going to be documenting it more once it's polished, but if you're 
creative and not afraid of svn, sed, and rsync, it can be implemented 
with no more management overhead than a single system setup.

Sean McAfee
System Engineer

Collaborative Fusion, Inc.
 smcafee at collaborativefusion.com
 412-422-3463 x 4025

5849 Forbes Avenue
Pittsburgh, PA 15217

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