Re: [openstack-dev] [HA] RFC: High Availability track at future Design Summits

[Adam Spiers]

Hi Thierry,

Thierry Carrez  wrote:
> Adam Spiers wrote:
> > I doubt anyone would dispute that High Availability is a really
> > important topic within OpenStack, yet none of the OpenStack
> > conferences or Design Summits so far have provided an "official" track
> > or similar dedicated space for discussion on HA topics.
> > [...]
> 
> We do not provide a specific track at the "Design Summit" for HA (or for
> hot upgrades for the matter) but we have space for "cross-project
> workshops" in which HA topics would be discussed. I suspect what you
> mean here is that the one of two sessions that the current setup allows
> are far from enough to tackle that topic efficiently ?

Yes, I think that's probably true.  I get the impression cross-project
workshops are intended more for coordination of common topics between
many official big tent projects, whereas our topics typically involve
a small handful of projects, some of which are currently unofficial.

> IMHO there is dedicated space -- just not enough of it. It's one of the
> issues with the current Design Summit setup -- just not enough time and
> space to tackle everything in one week. With the new event format I
> expect we'll be able to free up more time to discuss such horizontal
> issues

Right.  I'm looking forward to the new format :-)

> but as far as Barcelona goes (where we have less space and less
> time than in Austin), I'd encourage you to still propose cross-project
> workshops (and engage on the Ops side of the Design Summit to get
> feedback from there as well).

OK thanks - I'll try to figure out the best way of following up on
these two points.  I see that

  https://wiki.openstack.org/wiki/Design_Summit/Ocata/Etherpads

is still empty, so I guess we're still on the early side of planning
for design summit tracks, which hopefully means there's still time
to propose a fishbowl session for Ops feedback on HA.

Thanks a lot for the advice!
Adam

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Re: [openstack-dev] [HA] RFC: High Availability track at future Design Summits

[Thierry Carrez]

Adam Spiers wrote:
> I doubt anyone would dispute that High Availability is a really
> important topic within OpenStack, yet none of the OpenStack
> conferences or Design Summits so far have provided an "official" track
> or similar dedicated space for discussion on HA topics.
> [...]

We do not provide a specific track at the "Design Summit" for HA (or for
hot upgrades for the matter) but we have space for "cross-project
workshops" in which HA topics would be discussed. I suspect what you
mean here is that the one of two sessions that the current setup allows
are far from enough to tackle that topic efficiently ?

IMHO there is dedicated space -- just not enough of it. It's one of the
issues with the current Design Summit setup -- just not enough time and
space to tackle everything in one week. With the new event format I
expect we'll be able to free up more time to discuss such horizontal
issues, but as far as Barcelona goes (where we have less space and less
time than in Austin), I'd encourage you to still propose cross-project
workshops (and engage on the Ops side of the Design Summit to get
feedback from there as well).

-- 
Thierry Carrez (ttx)

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[openstack-dev] [HA] RFC: High Availability track at future Design Summits

[Adam Spiers]

Hi all,

I doubt anyone would dispute that High Availability is a really
important topic within OpenStack, yet none of the OpenStack
conferences or Design Summits so far have provided an "official" track
or similar dedicated space for discussion on HA topics.

This is becoming increasingly problematic as the number of HA topics
increase.  For example, in Austin a group of us spent something like
15 hours together over 3-4 days for design sessions around the future
of HA for the compute plane.

This is not by any means the only HA topic which needs discussing.
Other possible topics:

  - Input from operators on their experiences of deployment,
maintenance, and effectiveness of highly available OpenStack
infrastructure

  - Adding or improving HA support in existing projects, e.g.

  - cinder-volume active/active work is currently ongoing

  - neutron always has ongoing HA topics - the hot one in
Austin seemed to be HA+DVR+SNAT.

  - We had some great discussions with the Congress team in
Austin, which may need follow-up.

  - mistral is involved in ongoing HA work.

  - The various projects playing on the HA scene (Senlin is
another example) need the opportunity to sync up with each
other to become aware of any opportunities for integration or
potential overlap.

  - Documentation (the official HA guide)

  - Different / new approaches to HA of the control plane
(e.g. Pacemaker vs. systemd vs. other clustering technologies)

  - Testing and hardening of existing HA architectures (e.g. via
projects such as cloud99)

Whilst we do have the #openstack-ha IRC channel, weekly IRC meetings,
and of course the mailing lists, I think it would be helpful to have
an official space in the design summits for continuation of those
technical discussions face-to-face.

Granted, some of the above topics could be discussed in the related
project track (cinder, neutron, congress, documentation etc.).  But
this does not provide a forum for detailed technical discussion on
cross-project initiatives such as compute HA, or architectural debates
which don't relate to a single project, or work on HA projects which
don't have their own dedicated track in the Design Summit.

Therefore I would like to propose that future Design Summits adopt an
official HA "mini-track" (I guess one day might be sufficient), and
I'd really appreciate hearing opinions on this proposal.

Also the idea meets enough favour, it would be useful to find it
whether it's already too late to arrange this for Barcelona :-)

Thanks a lot!
Adam

P.S. Maybe a similar proposal on a smaller scale would be valid for
some of the operator and regional meetups too?

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