No way to set allocate-public-ip=true globally on OpenStack substrates

[Nobuto Murata]

Previously Juju had a model config option as use-floating-ip=true which can be used with model-defaults to apply the config globally to new models. However, the model config for use-floating-ip is deprecated by now and replaced by a constraint as allocate-public-ip=true instead.

We can set the constraint with set-model-constraints but it's a per model constraint not like a global default for a substrate with model-defaults as previous.

[previous behavior]

juju model-defaults openstack/regionOne \
    network=MyPrivateNetwork \
    use-floating-ip=true

juju add-model my-new-model1

juju add-model my-new-model2

[current behavior]

juju model-defaults openstack/regionOne \
    network=MyPrivateNetwork

juju add-model my-new-model1
juju set-model-constraints allocate-public-ip=true

juju add-model my-new-model2
juju set-model-constraints allocate-public-ip=true

[John A Meinel (jameinel)]

We are looking to model constraints as yet-another config item, so that you can have 'model-defaults' apply to create global default constraints as well. (Also solve issues like preferred architecture and other cleanups.)

[Juan M. Tirado (tiradojm)]

Old issue. Reopen if needed.

[Launchpad Janitor (janitor)]

[Expired for Canonical Juju because there has been no activity for 60 days.]