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

Andrew Lazarev alazarev at mirantis.com
Thu Jan 30 07:30:29 UTC 2014


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


On Wed, Jan 29, 2014 at 8:44 PM, Alexander Ignatov <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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