[CentOS] Clustering

Les Ault aultl at utk.edu
Fri Feb 5 14:09:35 UTC 2010

On Fri, 2010-02-05 at 07:57 -0600, Les Mikesell wrote:

> Bo Lynch wrote:
> > 
> >>
> > Currently we are doing the low tech method. Daily and weekly backups both
> > onsite and off along with RAID and all that other good stuff. I was just
> > wondering if clustering was a better way of handling things. Thanks for
> > the info.
> If you are looking at VMware, ESX(i) is the nicest of the bunch but moderately 
> expensive for the full version that does clustering and live moves - and you 
> also need a highly reliable iscsi disk server.  But even the free version is 
> very nice in terms of the management tools, low overhead, and the ability to 
> overcommit the host's RAM.  You could start by building shadow copies of most of 
> your servers that could be activated as needed, with perhaps a few being live 
> with application level failover (heartbeat, drbd, database replication, etc.). 
> ESXi is also a nice lab framework for testing new thing.

There are also a lot community scripts for management as well.


Les Ault VCP, RHCE
Linux Systems Administrator, Office of Information Technology
Computing Systems Services: Technical Services and Research

The University of Tennessee
135C5 Kingston Pike Building
2309 Kingston Pike
Knoxville, TN 37996
Phone: 865-974-1640

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