[openstack-dev] [savanna] Choosing provisioning engine during cluster launch

Trevor McKay tmckay at redhat.com
Thu Jan 30 15:52:25 UTC 2014


My mistake, it's already there.  I missed the distinction between set on
startup and set per cluster.

Trev

On Thu, 2014-01-30 at 10:50 -0500, Trevor McKay wrote:
> +1
> 
> How about an undocumented config?
> 
> Trev
> 
> On Thu, 2014-01-30 at 09:24 -0500, Matthew Farrellee wrote:
> > i imagine this is something that can be useful in a development and 
> > testing environment, especially during the transition period from direct 
> > to heat. so having the ability is not unreasonable, but i wouldn't 
> > expose it to users via the dashboard (maybe not even directly in the cli)
> > 
> > generally i want to reduce the number of parameters / questions the user 
> > is asked
> > 
> > best,
> > 
> > 
> > matt
> > 
> > On 01/30/2014 04:42 AM, Dmitry Mescheryakov wrote:
> > > I agree with Andrew. I see no value in letting users select how their
> > > cluster is provisioned, it will only make interface a little bit more
> > > complex.
> > >
> > > Dmitry
> > >
> > >
> > > 2014/1/30 Andrew Lazarev <alazarev at mirantis.com
> > > <mailto:alazarev at mirantis.com>>
> > >
> > >     Alexander,
> > >
> > >     What is the purpose of exposing this to user side? Both engines must
> > >     do exactly the same thing and they exist in the same time only for
> > >     transition period until heat engine is stabilized. I don't see any
> > >     value in proposed option.
> > >
> > >     Andrew.
> > >
> > >
> > >     On Wed, Jan 29, 2014 at 8:44 PM, Alexander Ignatov
> > >     <aignatov at mirantis.com <mailto:aignatov at mirantis.com>> wrote:
> > >
> > >         Today Savanna has two provisioning engines, heat and old one
> > >         known as 'direct'.
> > >         Users can choose which engine will be used by setting special
> > >         parameter in 'savanna.conf'.
> > >
> > >         I have an idea to give an ability for users to define
> > >         provisioning engine
> > >         not only when savanna is started but when new cluster is
> > >         launched. The idea is simple.
> > >         We will just add new field 'provisioning_engine' to 'cluster'
> > >         and 'cluster_template'
> > >         objects. And profit is obvious, users can easily switch from one
> > >         engine to another without
> > >         restarting savanna service. Of course, this parameter can be
> > >         omitted and the default value
> > >         from the 'savanna.conf' will be applied.
> > >
> > >         Is this viable? What do you think?
> > >
> > >         Regards,
> > >         Alexander Ignatov
> > >
> > >
> > >
> > >
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> > >
> > >
> > >
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> > >
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