Juju Digest, Vol 55, Issue 18

[Bruno Pereira]

Sounds really awesome! Even now MAAS has 90% of the problems with deploying
clusters solved anyways: discovery and power control (if you have power
control you have metrics and hardware reading for later monitoring during
production, etc etc)

A bit more of work and would make such a great platform for HPC.

Any who, will leave the juju list to do what it does best, thanks for
listening.

Bruno

On Tue, Aug 25, 2015 at 3:21 PM, Mark Shuttleworth <mark at ubuntu.com> wrote:

> On 25/08/15 14:20, Bruno Pereira wrote:
> > Diskless is tricky using the current structure of MAAS (at least on the
> > stage I last tested it around 1 year ago), its fairly simple to do, but
> not
> > if you follow a install with a reboot in to OS, similar to kickstart
> > installations, structure.
> >
> > For diskless you need to pxe boot a initial initrd and kernel image, load
> > the same kernel as your OS image, find a way of downloading your image
> (bit
> > torrent is an idea as much silly as it might sound, deployment of 1000's
> of
> > servers is really hard even for very fast networks), decompress that
> image
> > to RAM, chrooting and loading your OS system with services and all.
> >
> > Diskless is fancy and cool, but not required to do HPC, after all you
> don't
> > keep deploying a cluster day after day (even running diskless the up time
> > is amazing), stability is the word. 99% of the clusters you see in the
> > field are with some sort of HDDs. The only one I remember have seen
> > installed by my company was big 3k nodes recently, but the last one was
> > more than a year ago.
>
> PXE, initrd, iSCSI is the likely path (though RD is not inconceivable
> either). BT is feasible for image distribution, yes.
>
> Mark
>
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