warning: environments.yaml schema change

[Juan Negron]

+1 on Clint's comments.  It would be unwise to break deployments at this
point.

Thanks,

Juan



On Tue, Mar 20, 2012 at 8:35 AM, Clint Byrum <clint at ubuntu.com> wrote:

> Excerpts from William Reade's message of Tue Mar 20 03:21:57 -0700 2012:
> > Hi all
> >
> > Basic support for EC2 machine constraints will be landing in trunk very
> > shortly. This includes a change to the environments.yaml schema: the
> > default-image-id and default-instance-type keys are no longer valid (as
> > discussed here shortly before Christmas 2011).
> >
> > In exchange for this, it will become much easier to specify instance
> > types per-service:
> >
>
> William, I really appreciate how much better this has become.
>
> However, I don't think we can keep breaking peoples' existing installs
> anymore.  There has to be some kind of stability, or we'll chase beta
> testers and early adopters away.
>
> The agreement to drop those keys was also an agreement to ship all the
> features in 12.04's juju by February 16. That would allow beta1 users
> to keep using the same configs/settings through to the release. But we
> are severly past that, and approaching beta2. Changing environments.yaml
> means digging out all the old blog posts, askubuntu questions, and basic
> documentation, and making sure we annotate them that "btw, this doesn't
> work anymore".
>
> Can I suggest that instead of making these keys invalid, that they are
> marked as deprecated, and we simply warn users about that?
>
> So if I have one of them, I'd expect something like this on any juju
> command:
>
> 2012-03-20 08:32:00,123 WARNING default-image-id is deprecated. Use
> --constraints instead.
>
> And then keep the old behavior at least until after we ship a version
> of juju in the 12.04 release of Ubuntu?
>
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