From: Bron Gondwana (brongfastmail.fm)
Date: Mon Jun 25 2007 - 03:03:16 CDT

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On Mon, Jun 25, 2007 at 04:45:51PM +1000, Rob Chanter wrote:
>
> On Fri, Jun 22, 2007 at 10:47:18AM +1000, Bron Gondwana wrote:
> >
> > Has anyone else set up some sort of high-availability arrangement with
> > Postfix on multiple outbound machines? I've been thinking of DRBD or
> > similar replicated filesystem as a possibility. You'd still need to
> > manually or somehow safely guarantee that only one machine was accessing
> > the queue at once.
>
> Around here we'd probably use SRDF for that sort of thing. I haven't
> really considered it for DMZ MXes, though.

Haven't heard of that, I'll give it a look tonight (no internet on the
train, but a good time to catch up on mailing lists)

> Are you running a platform that gives you access to ZFS? Something like
> zreplicate (http://milek.blogspot.com/2007/03/zfs-online-replication.html)
> might fit the bill. It's not in the shipping version of Sol10; I haven't
> looked to see if it's in Nevada build 66 yet.

Not that box, no. We have our first Sol10 machine (an x4500 with lotsa
disk[tm]) which is being used as a backup server, but everything else is
Linux. No ZFS there for a while yet!

I'm watching btrfs with a lot of interest. It's not going to be
production ready for a little bit yet though!

ZFS seems really nice. I'm hoping it gets freed up to Linux-compatible
licence levels soonish.
 
> > (Not that we've had a single hardware failure on that machine in the
> > few years it's been running, and we have onsite 24x7 support from IBM
> > for the hardware, but it's still the "weakest link" in our
> > infrastructure right now)
>
> Now you've gone and said it ...

Yeah, yeah. I know. Thankfully I've already once had to re-purpose
another machine to fill its role when I reinstalled it for the Sarge =>
Etch transition, so I'm familiar with the process. It would only take
about 10 minutes to do everything. Not the end of the world.
 
> National Australia Bank Ltd

Wow, a bank with clueful IT people. What is it with you guys? Most of
the programming team from my previous job went there, and seem happy.

Bron.

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