[Linux-cluster] virtualization on top of Red Hat cluster

Geoffrey lists at serioustechnology.com
Mon Jan 26 12:59:53 UTC 2009

Balagopal Pillai wrote:
> It is a good idea to also check out whether there are any issues with 
> running these services in a cluster in an active-active configuration.
> For example with samba, if you are going to serve the same gfs volume as 
> an smb volume using multiple vm's, then you would need
> to use the cluster implementation - http://ctdb.samba.org/

We are not using gfs.

> Balagopal
> Geoffrey wrote:
>> We would like to find out if there are other folks attempting to do 
>> what we are trying to do.  We are having all kinds of problems.
>> We are trying to set up an 8 node cluster and run a number of virtual 
>> machines on top of this cluster.  The boxes are running Red Hat 5 and 
>> we are using Xen.
>> Before going into the actual issues we are running into, I thought we 
>> should first find out if there are others who are doing this, or 
>> attempting to do this.
>> This includes a separate virtual server for the following services: 
>> squid, ldap, mail server, dns, samba, email and a handful of 
>> Xservers/application servers.
>> The specific hardware includes:
>> 8 Dell 19150 nodes w/ rh5.2 xen
>> Each node has 32GB of ram and 8 cores (xeon 2.66)
>> EMC San CX-310
>> 2 Brocade 5000 fibre switches
>> Any feedback from anyone attempting or currently running a similar 
>> solution (virtualization on top of cluster) would be greatly appreciated.
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Until later, Geoffrey

Those who would give up essential Liberty, to purchase a little
temporary Safety, deserve neither Liberty nor Safety.
  - Benjamin Franklin

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