[TriLUG] Re: clustering or server mirroring

[Mack.Joseph at epamail.epa.gov]

Joseph Mack PhD, High Performance Computing & Scientific Visualisation
LMIT, Supporting the EPA Research Triangle Park, NC 919-541-0007 Federal
Infrastructure Contact-Ravi Nair 919-541-5467 - nair.ravi at epa.gov,
Federal Visualization  Contact - Joe Retzer, Ph.D. 919-541-4190 -
retzer.joseph at epa.gov

trilug-bounces at trilug.org wrote on 04/19/2005 10:35:20 AM:

> I've had a very good experience using UltraMonkey to run a
> HA and LB web farm.

Ultramonkey is a packaging of the Linux Virtual Server (LVS)
(the loadbalancer) with linux-ha (the failover mechanism).

The loadbalancing function of LVS allows you to bring down
a single server at a time for maintenance and put it back
on line without the clients knowing that anything has
happened to the backend.

LVS can be run under the routing demon keepalived to handle
failover.

Joe