Juju 2.3 beta2 is here!

[roger peppe]

On 2 November 2017 at 07:16, Mark Shuttleworth <mark at ubuntu.com> wrote:
> On 11/02/2017 04:56 AM, Chris Lee wrote:
>
> A new development release of Juju is here, 2.3-beta2.
>
>
> 2.3 is looking great, and is worth a test run for those of you with larger
> models and an interest in cross-model relations.
>
>
> ## New and Improved
>
> * Deploying bundles can now target existing machines
>
>    juju deploy some-bundle --use-existing-machines --bundle-machine 3=4
>
>
> From a D-R-Y perspective, we --dont --need --all --those --options :)
>
> Perhaps just:
>
>   juju deploy --map-machines A=B,C=D
>
> ... or some variant of that?
>
> Let's use the betas to refine and condense and clarify.

+1 to that. I'm wondering if use-existing-machines is ever appropriate
on its own, as the machine numbers in a model are ephemeral but
machine numbers in a bundle are static.

ISTM that there's a strong connection between specifying the machines that
a bundle is to be run on and specifying the machine that a newly deployed
service will run on. Going with that thought, how about

    juju deploy --to 3=0,4=3

and losing the --use-existing-machines flag? That way there are
no new flags at all for this feature and the intent of existing flags
is still preserved.

  rog.