New Docker goodies

[Stuart Bishop]

On 27 March 2015 at 23:50, sheila miguez <shekay at pobox.com> wrote:
>
> On Fri, Mar 27, 2015 at 10:49 AM, Jorge O. Castro <jorge at ubuntu.com> wrote:
>>
>> let's you just try Juju, with the limitation that you can't do the
>> local provider.
>
>
> I definitely appreciate the ability to test something isolated from my
> system. I was trying to accomplish this by nesting linux containers so that
> I could use the local provider from juju within a container, but did not get
> it to work.

And I don't think Jorge is totally correct. The reason why Docker is
an awesome choice here (I'd normally prefer one less moving part and
use LXC for this), is the magic --net=host option which makes the
container's network interface the same as the hosts network interface.
This sounds insane, until you realize that it means that juju running
inside the container  can control the local provider environment
running outside of the container. So kudos to whoever on the team
realized this, allowing my tests to make all the mess they like in the
vm while keeping my host nice and clean.

(it may be possible to do the same thing with LXC by port forwarding
the api port inside the container to the host, but docker has this
built in).

-- 
Stuart Bishop <stuart.bishop at canonical.com>