Is there interest in a talk on clustering?
Madison Kelly
linux-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org
Thu Dec 17 19:51:25 UTC 2009
William Muriithi wrote:
> Morning Madi
>
> 2009/12/17 Madison Kelly <linux-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org <mailto:linux-5ZoueyuiTZhBDgjK7y7TUQ at public.gmane.org>>:
> > Before you answer, I want to mention a concern...
> >
> > I've been doing a fair bit on clustering lately, and have successfully
> > gotten two-node clusters working designed to run virtual machines
> that can
> > be moved between nodes on the fly. I think I could see this being of
> > potential interest to TLUG as a talk.
>
> I think there would be interest. I for one would be very happy to hear
> about it
Woot. Anyone else?
> > However,
> >
> > It's a sufficiently involved topic that, given the two hour window of a
> > talk, I don't think I'd be able to cover everything needed to
> actually build
> > a cluster. For this reason, I've been debating offering it up as a talk.
> > I've been thinking about ways to make a talk useful, and am still not
> sure
> > how I could do that... So the second part of this question is; Given a
> > limited time frame, what would you guys like to hear about with regard to
> > clustering? What would be helpful?
>
> This is definitely not a simple talk. I think there is no way you can
> present it in details all across, especially as it involve lots of
> technologies.
> I mean, it involve virtualization, networking (VRRP), LVM or cluster
> file system, DBRD or SAN storage just to name a few. The only way you
> can deliver it in time is to generalize some of the content.
>
> If I was in your shoe, I would skim over simple stuff, things that tend
> to work easily and spend most of the time were really hard to get going.
> When I mean skim, I mean mention it just enough that one can tell how
> its related to the main talk, alternatives and their
> advantages/disadvantages etc.
>
> The meat of the talk I assume would be DBRD and HA. For these two
> services, you can go deep as explaining every section of the
> configuration file, so the lion share of time should go toward these two
> in my humble opinion And to be frank, they also tend to be the hardest
> to get going, all the more justifying the extra effort needed there. Ok,
> I admit cluster file system is also a pain, but one has to make a choice.
>
> You can also consider sending out the presentation before the talk -
> people can look at it and be up to speed when you are presenting. Or
> else share your notes on the project at the end of presentation and
> everyone can look at the detailed stuff later and fill up the gaps. In
> short, the listerners also have to do a bit of homework as the time will
> not be enough for very detailed talk.
I think I'd approach the first talk from the point of view of building a
DRBD+LVM 2-node cluster running Redhat cluster software on CentOS 5
hosting Xen virtual machines.
I like the idea of glossing over certain things in the talk, but I think
I will create a more detailed document that covers everything in proper
detail. I can already think of the major "gotchas" that caused me to
burn so much time getting things going.
> >
> > Anyway, I'm just throwing this out here at this point to get some
> feedback
> > and to see if there is any real interest. If there is, and I can think of
> > something useful to cover, I'd probably be looking at an April talk.
> >
> > Madi
>
> Anyway, thats just my 2 cents
It's appreciated. I've asked to be booked in for May, but that is still
contingent on others showing interest. It's a topic sufficiently in a
corner that there may not be broad enough interest in a generalized
group like TLUG. I suspect there will be, but I'd rather not make that
assumption. :)
If it doesn't happen in TLUG, I've contemplated hosting my own little
(free, obviously) workshop on clustering. I suspect I could talk my boss
into letting me use some office space on some Saturday. :P
Madi
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