[lxc-users] Running LXC and LXD on the same host

[Serge Hallyn]

the pids cgroup and the kmem controller both help you to fight fork bombs.
If you're doing nested unprivileged containers then you'll have a practical
limit imposed by the ever growing uid ranges as you go up the stack.

And the kernel actually imposes a strict depth limit of 32 user namespaces.

-serge

Quoting Bostjan Skufca (bostjan at a2o.si):
> Is there a limit to container nesting depth? Does containerization-based
> equivalent of fork bomb already exist? :)
> 
> 
> b.
> 
> 
> On 12 April 2016 at 16:54, Serge Hallyn <serge.hallyn at ubuntu.com> wrote:
> 
> > That's no problem.  The try-it service for instance runs that way.
> >
> > Quoting jjs - mainphrame (jjs at mainphrame.com):
> > > Ah, wait, I might have misunderstood your question.
> > >
> > > One can run containers within containers, but I don't know of anyone
> > > running an lxc ct inside an lxd ct or vice versa.
> > >
> > > Jake
> > >
> > > On Mon, Apr 11, 2016 at 5:32 PM, jjs - mainphrame <jjs at mainphrame.com>
> > wrote:
> > > > I'm running both lxc and lxd containers on the same box. There is no
> > > > conflict, as the commands and data paths are different.
> > > >
> > > > Jake
> > > >
> > > > On Mon, Apr 11, 2016 at 5:12 PM, Bostjan Skufca <bostjan at a2o.si>
> > wrote:
> > > >> Is it possible?
> > > >> Or is running LXC on host and LXD as one of LXC containers more
> > inclined to
> > > >> work out of the box?
> > > >>
> > > >> (just fishing for info, haven't tried LXD out yet)
> > > >>
> > > >> Tnx,
> > > >> b.
> > > >>
> > > >>
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