[lxc-users] Short howto re lxd-container-on-LAN for impatient dummies?

[Simos Xenitellis]

On Sat, Apr 22, 2017 at 6:52 PM, Dan Kegel <dank at kegel.com> wrote:
> TL;dr:
>
> For Ubuntu 16.04 users who have lxd-2.0.9 from xenial-updates,
> what is the fast path towards simple lxd container-on-the-lan happiness?
> (Extra credit: allow ssh between the host and the guest, also part of
> Things Just Working.)
>

To SSH from the host to the guest, you can run the command

cat ~/.ssh/id_rsa.pub | lxc exec mycontainer -- sudo --login --user
ubuntu tee /home/ubuntu/.ssh/authorized_keys

It pastes your SSH public key to the ~ubuntu/.ssh/authorized_keys file
in the container,
making sure the permissions are right.

You would not be able to use 'ssh-copy-id' since the 'ubuntu' account
in the container does not have a password.

Simos

> Long version:
>
> The issue
> https://github.com/lxc/lxd/issues/1294
> was closed, but as far as I can tell, is still valid:
> lxc users don't care about bridges, they just Want Things To Work.
> And so the tutorials for setting up lxd containers that act like
> they're on the LAN, e.g.
>  https://www.stgraber.org/2016/10/27/network-management-with-lxd-2-3/
>  https://www.simpleprecision.com/ubuntu-16-04-lxd-networking-simple-bridge/
> leave them cold, leading to questions like
>  http://stackoverflow.com/questions/41826430/how-to-setup-lxd-containers-that-communicate-over-the-lan
> Note the length of the answer.  Users who Just Want Things To Work
> don't want to have to learn about bridges.  I know, it's their loss, but
> that's the way it is.  This hinders adoption.
>
> (Docker probably has similar problems, but has wrappers like weave,
> pipework, flannel, and socketplane to smooth things over for users, I hear.)
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