lxc template creation, give option to use mirror

[David Britton]

As there has now been a mirror set up of cloud-images[0], it makes sense to allow users to use that. Please provide an option to get lxc images from a different location.

After talking to Scott Moser, it appears the lxc system has an environment variable for this, if juju would just allow it to be set and used.

dpb@helo:~$ grep BASEURL /usr/bin/ubuntu-cloudimg-query
burl="${UBUNTU_CLOUDIMG_QUERY_BASEURL:-https://cloud-images.ubuntu.com/query}"

Thanks!

[0] http://us.cloud-images.ubuntu.com/

[Nate Finch (natefinch)]

You can set that using juju run right now. Making it something settable by juju set-environment seems logical, and not super hard.

[John A Meinel (jameinel)]

It feels like this could be a global environment setting "lxc-ubuntu-cloudimage-query-url:"
Its also something we'll want to be aware of as we support LXD, where you can (again) name places where images can be found.
I believe the LXD case is actually much cleaner, but Juju will still want to have a way to expose the LXD configuration.

[Nobuto Murata (nobuto)]

I didn't try it by myself, but 1.25 seems to have "cloudimg-base-url" config option.
https://github.com/juju/juju/commit/07006e52b06acd6701e766b57f4c3bcfe59ef069

[Nobuto Murata (nobuto)]

Possibly a dup of https://bugs.launchpad.net/juju-core/+bug/1357045