Nested LXD, how?

[Martinx - ジェームズ]

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 ?

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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