On Sun, 2007-01-14 at 14:13 +0100, Goswin von Brederlow wrote:
> Tim Post <tim.post@xxxxxxxxxxxxxxx> writes:
>
> > My question is this, lets say we have a farm of 20 servers , all running
> > xen, each supporting 50 or so guests. That basically describes one of my
> > Xen farms.
> >
> > I want to centralize backups, not just where they are deposited but also
> > scheduling them. Or perhaps I want them stored locally on each dom-0,
> > but still want centralized scheduling. How would we accomplish this? It
> > seems a three part, not two part system would be best.
> >
> > I agree, if we're going to do it lets do it right .. and in the spirit
> > of that I've just thrown another wrench into the gears :P
> >
> > Best,
> > --Tim
>
> How about using a nfsroot in all domU or gfs or other global
> filesystem and do the backuping on dom0 only? Sometimes that is the
> better option.
>
> MfG
> Goswin
This still involves the need for tcp/ip networking, firewall hole
punching (NFS is a very hard service to firewall unless you teach it to
lock on a static port, which just lessens security).. and you have the
headache of configuring the cluster FS and means of spanning it (aoe ,
iscsi, etc).
You would literally have to scrape rpcinfo and be sure all respective
ports were open ingress/egress in any firewall for that to work
reliably, upon each NFS restart.. I've done this, its a simple script
but still a hassle for the novice.
While I agree AoE + ocfs2 are a no brainer to get going, some people
aren't as experienced using it .. and would be frustrated quickly (and
give up quickly).
Ligesh is right, something serial (or perhaps IB when support is finally
there for it) is the way to go.
Best,
--Tim
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