[openstack-dev] [heat][nova] Does Heat support Nova micro versions

Rabi Mishra ramishra at redhat.com
Mon Oct 29 07:18:11 UTC 2018

On Sat, Oct 27, 2018 at 10:08 PM Gary Kotton <gkotton at vmware.com> wrote:

> Hi,
> Does heat support os-compute-api-version? Say for example I am using
> queens but have a use case via heat that requires a API parameter that was
> capped in the 2.56

There isn't a way to specify compute microversion in the template.

Till queens, heat client plugin for nova was using the base api version[1],
unless a specific feature/property requires a higher mircoversion[2]. So
features capped in newer api versions should be usable without any change.

However, we moved to use the "max api microversion supported" as the
default[3] since rocky to support new features without much changes and not
to have too many versioned clients. As a side-effect, features/properties
capped by new nova api microversions can't be used any more.

We probably have to look for a better way to handle this in the future.


> microversion.
> Thanks
> Gary
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Rabi Mishra
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