[CentOS] High-Availability Clustering and drbd?

Alberto xagonzalezm at gmail.com
Fri Mar 17 09:24:33 UTC 2006


Is there any plan to include heartbeat 2.0.4 rpm and drbd last version in
extras?


On 3/17/06, Johnny Hughes <mailing-lists at hughesjr.com> wrote:
>
> On Thu, 2006-03-16 at 23:52 -0800, Benjamin Smith wrote:
> > Ugh. What a week!
> >
> > Anyway, my situation is that we have a production server in San
> Fransisco, and
> > a "hot" backup in my hometown (Chico, CA) .
> >
> > What I'd like to do is mirror the production server to the local one, so
> that
> > if the SF server goes down, we have work saved to the last possible
> moment.
> > Say, within 10 minutes.... Is this feasible?
>
> I don't think something like DRBD is going to work very well across a
> WAN link.  The amount of traffic generated by drbd can be pretty large,
> it is enough that I normally use a gigabit crossover cable between 2
> servers (if possible) when using drbd on them.
>
> I would think that rsyncs of the appropriate directories at a period in
> time might be the best way to handle this.
>
> I am getting ready to do this in then next week or so myself ... if I
> have any luck, I'll tell you what solution I found.  In my case I am
> also worried about a mysql database that has live info in it ... and an
> ldap database too.
>
>
> > On Friday 10 March 2006 03:43, Will McDonald wrote:
> > > On 10/03/06, Benjamin Smith <lists at benjamindsmith.com> wrote:
> > > > Does anyone here on this list have experience with HA clustering?
> > > >
> > > > I'm previewing drbd as a potential tool, and wanted to know if
> anyone here
> > has
> > > > experiemented with it at all... How stable is it? Does the
> additional
> > > > likelyhood of failure given the additional complexity actually get
> > > > compensated by a better overall system?
> > > >
> > > > http://www.drbd.org/
> > >
> > > I've used DRBD and Heartbeat in various guises for various roles over
> > > the last 5 or 6 years. Initially I was loathe to put it in production,
> > > it just didn't seem polished enough.
> > >
> > > Nowadays it's pretty decent though we don't use it for vast quantities
> of
> > data.
> > >
> > > We have some old-ish boxes running as LVS loadbalancers for a handful
> > > of mail and webservers and these are pretty solid.
> > >
> > > We run DRBD/Heartbeat clusters for a Qmail/VPOPMail NFS mailstore
> > > which holds around 40GB of customer Maildirs. That's running the
> > > packaged DRBD and Heartbeat RPMs from CentOS Extras and has been solid
> > > since we switched back to NFS3 from NFS4.
> > >
> > > We run a similar setup with small MySQL and Postgres databases and
> > > that's pretty reliable too.
> > >
> > > Will.
> > > _______________________________________________
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> > > CentOS at centos.org
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> > >
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> > >
> > >
> >
>
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