Nested LXD, how?

[Ryan Harper]

Hi,

On Fri, Oct 23, 2015 at 3:38 PM, Martinx - ジェームズ <thiagocmartinsc at gmail.com>
wrote:

> OMG! This is so cool!! Thank you so much!!!   :-D
>
> Now, the million dollar question... I'll be playing with LXD on
> OpenStack... Is there an elegant solution for this?
>
> I mean, how can OpenStack launch a LXD containers, with
> "security.nesting 1" automatically ?
>

You can get LXD as compute type with nclxd:

https://insights.ubuntu.com/2015/05/06/introduction-to-nova-compute-lxd/
https://zulcss.wordpress.com/2015/10/20/an-nova-compute-lxd-upate/

Or, if you've got a KVM Ubuntu instance, you can just install lxd and run
machine containers inside the KVM instance with lxd.



>
> Better to include this tip on your next blog post too!   ;-)
>
> Thank you again!
>
>
> On 23 October 2015 at 15:55, Serge Hallyn <serge.hallyn at ubuntu.com> wrote:
> > On the host, edit /etc/subuid and /etc/subgid to allocate sufficient uid
> > ranges.  In the root:firstuid:range entries, change range to be, let's
> say,
> > 200000.  So something like
> >
> > root:100000:200000
> > lxd:100000:200000
> >
> > (I'm showing both root and lxd bc which to use depends on your lxd
> version,
> > I think)
> >
> > Initialize a container,
> >
> > lxc init wily w1
> > lxc config set w1 security.nesting 1
> > lxc start w1
> >
> > Now inside w1, edit /etc/subuid and /etc/subgid to make sure the root
> > allcoations do not go past 200000.  so set them to say:
> >
> > root:100000:65536
> > lxd:100000:65536
> >
> > Now you should be able to launch a container inside w1.  (I just tried
> > this in a fresh vm, worked here)
> >
> > I should do a blog post on this soon.
> >
> > Quoting Martinx - ジェームズ (thiagocmartinsc at gmail.com):
> >> Guys,
> >>
> >>  I need to create 4, or more, LXD containers, inside 1 LXD container.
> >>
> >>  How to do that?
> >>
> >>  The first LXD container, is running on a KVM (or bare-metal) host,
> >> with Ubuntu 14.04 + LXD 0.20 (ppa:ubuntu-lxc/lxd-stable).
> >>
> >>  I really appreciate any help!
> >>
> >>  I'm seeing that both LXC itself, and LXD, supported nested containers
> but, how?
> >>
> >>  I'm trying but, it doesn't work...
> >>
> >>  Thanks in advance!
> >>
> >> Best,
> >> Thiago
> >>
> >> --
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> >> More info: https://wiki.ubuntu.com/ServerTeam
>
> --
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