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RE: [Linux-cluster] LVS cluster



 > -----Original Message-----
> From: linux-cluster-bounces redhat com 
> [mailto:linux-cluster-bounces redhat com] On Behalf Of Tomas Hoger
> Sent: Wednesday, July 11, 2007 11:13 AM
> To: linux clustering
> Subject: Re: [Linux-cluster] LVS cluster
> 
> On 7/11/07, Kristoffer Lippert <kristoffer lippert jppol dk> wrote:
> > One fairly simple question for a change. :-)
> >
> > We have two frontend webservers running a cluster to handle 
> a SAN (gfs).
> > Would it be possible to run the LVS router on the same physical 
> > machines as the cluster? Thus creating a fully redundant 
> loadbalanced 
> > cluster of our two frontend webservers.
> >
> > Currently we run with dns RoundRobin "load balancing". 
> (Wich is not so 
> > good in failover situations).
> 
> Technically yes, but I'm not sure if it's supported ;).  You 
> should be able to find some examples in LVS howto or on 
> ultramonkey site.
> 
> Should be easy to implement using RHCS/piranha, if you have 
> RHEL4 or 5.

I'd suggest looking into keepalived as well. It (or something similar) will
perform service checks and will add / remove nodes from the LVS tables on
the fly if they go online / offline. That should fix your failover issue. 

Chris  


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