Change network spaces for a live container

[Diko Parvanov]

When trying to update the bindings to an already deployed units (designate-bind) we get:

ERROR merging application bindings: binding endpoint "dns-frontend" to space "external-space" is not feasible: one or more deployed machines lack an address in this space

Even if we manually add the legs on the lxc containers with lxc config device add - we get the same error.

Can we add the possibility to change the application bindings while units are running?

[John A Meinel (jameinel)]

It is not currently supported.

On Tue, Jan 26, 2021 at 10:01 AM Diko Parvanov <email address hidden>
wrote:

> Public bug reported:
>
> When trying to update the bindings to an already deployed units
> (designate-bind) we get:
>
> ERROR merging application bindings: binding endpoint "dns-frontend" to
> space "external-space" is not feasible: one or more deployed machines
> lack an address in this space
>
> Even if we manually add the legs on the lxc containers with lxc config
> device add - we get the same error.
>
> Can we add the possibility to change the application bindings while
> units are running?
>
> ** Affects: juju
> Importance: Undecided
> Status: New
>
> --
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> https://bugs.launchpad.net/bugs/1913312
>
> Title:
> Change container bindings for running application
>
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[Joseph Phillips (manadart)]

What version of Juju are you running here?

When you add the devices via lxc config, are you sure that those NICs are operational on the machines?

Perhaps a "netplan apply" or some such is necessary to bring the NICs "up". This would cause the machine agent in the container to report the NIC and associate it with the correct space via its subnet.

If you check via `juju show machine {ID} --format yaml` you will see the NIC if it is being reported properly to Juju.

[Canonical Juju QA Bot (juju-qa-bot)]

This Medium-priority bug has not been updated in 60 days, so we're marking it Low importance. If you believe this is incorrect, please update the importance.