[openstack-dev] [Magnum] Scheduling for Magnum

Jay Lau jay.lau.513 at gmail.com
Sun Feb 8 03:31:15 UTC 2015


Sorry for late. I'm OK with both nova scheduler and swarm as both of them
using same logic for scheduling: filter + strategy (weight), and the code
structure/logic is also very similar between nova scheduler and swarm.

In my understanding, even if we use swarm and translate go to python, after
this scheduler is added to magnum, we may notice that it is very similar
with nova scheduler.

Thanks!





2015-02-08 11:01 GMT+08:00 Adrian Otto <adrian.otto at rackspace.com>:

>  Ok, so if we proceed using Swarm as our first pursuit, and we want to add
> things to Swarm like scheduling hints, we should open a Magnum bug ticket
> to track each of the upstream patches, and I can help to bird dog those. We
> should not shy away from upstream enhancements until we get firm feedback
> suggesting our contributions are out of scope.
>
>  Adrian
>
>
> -------- Original message --------
> From: "Steven Dake (stdake)"
> Date:02/07/2015 10:27 AM (GMT-08:00)
> To: "OpenStack Development Mailing List (not for usage questions)"
> Subject: Re: [openstack-dev] [Magnum] Scheduling for Magnum
>
>
>
>   From: Eric Windisch <eric at windisch.us>
> Reply-To: "OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev at lists.openstack.org>
> Date: Saturday, February 7, 2015 at 10:09 AM
> To: "OpenStack Development Mailing List (not for usage questions)" <
> openstack-dev at lists.openstack.org>
> Subject: Re: [openstack-dev] [Magnum] Scheduling for Magnum
>
>
>> 1) Cherry pick scheduler code from Nova, which already has a working a
>> filter scheduler design.
>> 2) Integrate swarmd to leverage its scheduler[2].
>
>
>  I see #2 as not an alternative but possibly an "also". Swarm uses the
> Docker API, although they're only about 75% compatible at the moment.
> Ideally, the Docker backend would work with both single docker hosts and
> clusters of Docker machines powered by Swarm. It would be nice, however, if
> scheduler hints could be passed from Magnum to Swarm.
>
>  Regards,
> Eric Windisch
>
>
>  Adrian & Eric,
>
>  I would prefer to keep things simple and just integrate directly with
> swarm and leave out any cherry-picking from Nova. It would be better to
> integrate scheduling hints into Swarm, but I’m sure the swarm upstream is
> busy with requests and this may be difficult to achieve.
>
>  Regards
> -steve
>
>
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-- 
Thanks,

Jay Lau (Guangya Liu)
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