10 Feb
2009
10 Feb
'09
3:31 p.m.
- The real problem is that unless the database is co-located with the Xymon server, then your monitoring suddenly becomes dependant on a remote database-server. So what happens if your database server loses the network connection to the Xymon server ? You won't get any alerts from Xymon, because it has no data available to generate alerts from.
It's the same reason that has kept me from using SAN storage for my production Xymon server at work. Much too complex for my taste, far too many ways it can break.
Interesting that you should mention that, because our Xymon installation has all of the /var/hobbit/data stuff stored on a SAN mount. This has worked out fairly well for us (though we did have an intermittent issue for a few months that eventually got straightened out).
However, I'm working on implementing an HA solution for Hobbit using LinuxHA, and I think we'll be moving from SAN-based storage to local storage, using DRBD for replication between the two nodes.