Open Stack

Hello,

I made an attempt to gather all valuable points 'for' and 'against'
9.2.x in one document [1]. Please take a look on it, I also put some
comments there to keep everything in one place. I believe this can help
us to make deliberated decision.

Please add more pros / cons there as I don't pretend to make a
full picture at the first attempt.

Just in case, I'd prefer to 'downgrade' to 9.2 :)

[1] https://etherpad.mirantis.net/p/7ZUruwlwJM

On Tue, 15 Dec 2015 20:47:41 +0200
Igor Kalnitsky <ikalnitsky at mirantis.com> wrote:

> FYI: so far (according to poll [1]) we have
> 
> * 11 votes for keeping 9.2
> * 4 votes for restoring 9.3
> 
> [1]
> https://docs.google.com/spreadsheets/d/1RNcEVFsg7GdHIXlJl-6LCELhlwQ_zmTbd40Bk_jH1m4/edit?usp=sharing
> 
> On Tue, Dec 15, 2015 at 8:34 PM, Vladimir Kuklin
> <vkuklin at mirantis.com> wrote:
> > Folks
> >
> > Let me add my 2c here.
> >
> > I am for using Postgres 9.3. Here is an additional argument to the
> > ones provided by Artem, Aleksandra and others.
> >
> > Fuel is being sometimes highly customized by our users for their
> > specific needs. It has been Postgres 9.3 for a while and they might
> > have as well gotten used to it and assumed by default that this
> > would not change. So some of their respective features they are
> > developing for their own sake may depend on Postgres 9.3 and we
> > will never be able to tell the fraction of such use cases.
> > Moreover, downgrading DBMS version of Fuel should be inevitably
> > considered as a 'deprecation' of some features our software suite
> > is providing to our users. This actually means that we MUST provide
> > our users with a warning and deprecation period to allow them to
> > adjust to these changes. Obviously, accidental change of Postgres
> > version does not follow such a policy in any way. So I see no other
> > ways except for getting back to Postgres 9.3.
> >
> >
> > On Tue, Dec 15, 2015 at 7:39 PM, Igor Kalnitsky
> > <ikalnitsky at mirantis.com> wrote:
> >>
> >> Hey Mike,
> >>
> >> Thanks for your input.
> >>
> >> > actually not.  if you replace your ARRAY columns with JSON
> >> > entirely,
> >>
> >> It still needs to fix the code, i.e. change ARRAY-specific queries
> >> with JSON ones around the code. ;)
> >>
> >> > there's already a mostly finished PR for SQLAlchemy support in
> >> > the queue.
> >>
> >> Does it mean SQLAlchemy will have one unified interface to make
> >> JSON queries? So we can use different backends if necessary?
> >>
> >> Thanks,
> >> - Igor
> >>
> >> On Tue, Dec 15, 2015 at 5:06 PM, Mike Bayer <mbayer at redhat.com>
> >> wrote:
> >> >
> >> >
> >> > On 12/15/2015 07:20 AM, Igor Kalnitsky wrote:
> >> >> Hey Julien,
> >> >>
> >> >>>
> >> >>> https://blueprints.launchpad.net/fuel/+spec/openstack-ha-fuel-postgresql
> >> >>
> >> >> I believe this blueprint is about DB for OpenStack cloud (we use
> >> >> Galera now), while here we're talking about DB backend for Fuel
> >> >> itself. Fuel has a separate node (so called Fuel Master) and we
> >> >> use PostgreSQL now.
> >> >>
> >> >>> does that mean Fuel is only going to be able to run with
> >> >>> PostgreSQL?
> >> >>
> >> >> Unfortunately we already tied up to PostgreSQL. For instance,
> >> >> we use PostgreSQL's ARRAY column type. Introducing JSON column
> >> >> is one more way to tighten knots harder.
> >> >
> >> > actually not.  if you replace your ARRAY columns with JSON
> >> > entirely, MySQL has JSON as well now:
> >> > https://dev.mysql.com/doc/refman/5.7/en/json.html
> >> >
> >> > there's already a mostly finished PR for SQLAlchemy support in
> >> > the queue.
> >> >
> >> >
> >> >
> >> >>
> >> >> - Igor
> >> >>
> >> >> On Tue, Dec 15, 2015 at 12:28 PM, Julien Danjou
> >> >> <julien at danjou.info> wrote:
> >> >>> On Mon, Dec 14 2015, Igor Kalnitsky wrote:
> >> >>>
> >> >>>> The things I want to notice are:
> >> >>>>
> >> >>>> * Currently we aren't tied up to PostgreSQL 9.3.
> >> >>>> * There's a patch [2] that ties Fuel up to PostgreSQL 9.3+ by
> >> >>>> using a set of JSON operations.
> >> >>>
> >> >>> I'm curious and have just a small side question: does that
> >> >>> mean Fuel is
> >> >>> only going to be able to run with PostgreSQL?
> >> >>>
> >> >>> I also see
> >> >>>
> >> >>> https://blueprints.launchpad.net/fuel/+spec/openstack-ha-fuel-postgresql,
> >> >>> maybe it's related?
> >> >>>
> >> >>> Thanks!
> >> >>>
> >> >>> --
> >> >>> Julien Danjou
> >> >>> // Free Software hacker
> >> >>> // https://julien.danjou.info
> >> >>
> >> >>
> >> >> __________________________________________________________________________
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> >> >>
> >> >
> >> >
> >> > __________________________________________________________________________
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> >>
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> >
> >
> >
> >
> > --
> > Yours Faithfully,
> > Vladimir Kuklin,
> > Fuel Library Tech Lead,
> > Mirantis, Inc.
> > +7 (495) 640-49-04
> > +7 (926) 702-39-68
> > Skype kuklinvv
> > 35bk3, Vorontsovskaya Str.
> > Moscow, Russia,
> > www.mirantis.com
> > www.mirantis.ru
> > vkuklin at mirantis.com
> >
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> 
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-- 
Thanks,
Dmitry Teselkin