[openstack-dev] [Magnum] Scheduling for Magnum

Joe Gordon joe.gordon0 at gmail.com
Tue Feb 10 01:41:29 UTC 2015


On Mon, Feb 9, 2015 at 6:00 AM, Steven Dake (stdake) <stdake at cisco.com>
wrote:

>
>
> On 2/9/15, 3:02 AM, "Thierry Carrez" <thierry at openstack.org> wrote:
>
> >Adrian Otto wrote:
> >> [...]
> >> We have multiple options for solving this challenge. Here are a few:
> >>
> >> 1) Cherry pick scheduler code from Nova, which already has a working a
> >>filter scheduler design.
> >> 2) Integrate swarmd to leverage its scheduler[2].
> >> 3) Wait for the Gantt, when Nova Scheduler to be moved out of Nova.
> >>This is expected to happen about a year from now, possibly sooner.
> >> 4) Write our own filter scheduler, inspired by Nova.
> >
> >I haven't looked enough into Swarm to answer that question myself, but
> >how much would #2 tie Magnum to Docker containers ?
> >
> >There is value for Magnum to support other container engines / formats
> >(think Rocket/Appc) in the long run, so we should avoid early design
> >choices that would prevent such support in the future.
>
> Thierry,
> Magnum has an object type of a bay which represents the underlying cluster
> architecture used.  This could be kubernetes, raw docker, swarmd, or some
> future invention.  This way Magnum can grow independently of the
> underlying technology and provide a satisfactory user experience dealing
> with the chaos that is the container development world :)
>

While I don't disagree with anything said here, this does sound a lot like
https://xkcd.com/927/



>
> We will absolutely support relevant container technology, likely through
> new Bay formats (which are really just heat templates).
>
> Regards
> -steve
>
> >
> >--
> >Thierry Carrez (ttx)
> >
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