Re: [Xen-users] Cluster xen

[Bart Coninckx <bart.coninckx@xxxxxxxxxx>]

On 03/06/12 00:08, Outback Dingo wrote:
> On Mon, Mar 5, 2012 at 5:59 PM, Bart Coninckx<bart.coninckx@xxxxxxxxxx>  wrote:
> > On 03/05/12 23:41, netz-haut - stephan seitz wrote:
> >
> > Am Montag, den 05.03.2012, 20:52 +0100 schrieb Bart Coninckx:
> >
> > > > To help this fellow along, I will translate his post:
> > > >
> > > > Hello,
> > > >
> > > > I would like to implement a cluster with Xen or Xen server with two Dell
> > > > R710 servers.
> > > >
> > > > I would like to build a cluster using the entire added diskspace of the
> > > > two
> > > > servers, as well as the total memory.
> > > >
> > > > What are your experiences and configurations for this?
> > > >
> > > > Thanks in advance,
> > > >
> > > > Regards,
> > > >
> > > > Mat
> > > >
> > > >
> > > >
> > > > Well Mat,
> > > >
> > > > I usually use DRBD and Pacemaker for this. You can load balance the
> > > > cluster
> > > > resources (being Xen DomU's) across the two nodes. For live migration you
> > > > need dual primary.
> > > > For dual primary you need stonith.
> > > >
> > > > Read up on http://www.clusterlabs.org
> > > >
> > > > B.
> > > http://www.cloudstack.org/
> > >
> > >
> > > > _______________________________________________
> > > > Xen-users mailing list
> > > > Xen-users@xxxxxxxxxxxxx
> > > > http://lists.xen.org/xen-users
> > I'm not familiar (yet) with Cloudstack, but
> > http://cloudstack.org/cloudstack/requirements.html seems to state that
> > the requirements are more than two servers. I guess this solution won't
> > do Mat a lot of good, does it?
> >
> > cheers,
> >
> >
> > B.
> >
> > You're right. To get useful benefits from using cloudstack, one would need
> > *at least* one gateway/firewall,
> > one management node, a primary storage (local, redundant like drbd
> > master/master are not supported
> > out of the box and need to be "hacked"), one secondary storage (nfs e.g.)
> > and at least one switch capable
> > of dynamic vlan registration (i forget, 802.something).
> > Personally, I love cloudstack, but for the OP's needs, drbd master/master
> > with a stonith (could be done via
> > IPMI / iDRAC) would be a much better solution. For a two node cluster, i
> > think, REMUS and/or Kemari projects
> > are worth a try for failover scenarios.
> >
> >
> >
> >
> > I'm actually having the same challenge as OP. What if you would run
> > cloudstack ON a drbd master/master as a series of virtual machines? The main
> > benefit would be easy provisioning, central management, snapshotting etc
> >
> >
> > B.
> Well at that point just throw XCP into the mix...... itll run from local disk
Was thinking about that,

thx!

B.

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