[lxc-users] Status of LXC on Ubuntu

[Serge Hallyn]

Quoting Mark Clarkson (mark.clarkson at smorg.co.uk):
> >>/   Ubuntu Utopic 14.10 - comes with LXC 1.1 - Doesn't work
> />
> >Where did you find that?
> 
> An out-of-the box install using vagrant.
> 
> >>/   Ubuntu Vivid - 15.04 - comes with LXC 1.1 - Works
> />>/
> />>/  From information gathered from the Web it seems that the Utopic systemd
> />
> >which "web", exactly?
> 
> I can't find it in my history... or anywhere! I'm confused about that.
> 
> >Not sure about the bundled version, but at least the one from
> >https://launchpad.net/~ubuntu-lxc/+archive/ubuntu/daily  <https://launchpad.net/%7Eubuntu-lxc/+archive/ubuntu/daily>  works fine
> 
> Thanks for showing the output, good to know it does work on Utopic.
> 
> Just to make sure, you were running systemd (not upstart) on the Utopic
> Host?

AFAIU systemd on vivid is ok, but on utopic is not recommended.

> >>/
> />>/  I would prefer to use Trusty for LTS but systemd is too old for the
> />>/  other software I need on the host so Utopic would be the next best
> />
> >which "software" is that? Trusty is still the recommended version
> >(http://www.ubuntu.com/download/server)
> 
> I need to run Fleet and etcd. I'm hoping to use them for simple clusters
> where I can run both docker (for single process containers) and LXC (for
> full unprivileged OS containers with config mgmt etc.) Fleet makes use of
> some features only available in later systemd versions ('systemctl cat'
> for instance).
> 
> I'm hoping to be able to be able to run docker/lxc on the same machines,
> but if not I can separate them.
> 
> I don't think Trusty supports systemd at all so Utopic is my minimum
> version. I'm only choosing Ubuntu for the host because LXC and docker
> like it so much :-J
> 
> >/  thing. Ubuntu Vivid works but I'm a little worried about using it in
> />/  production.
> /
> >The snippet pasted above (utopic) is from my laptop, which also runs
> >lxc-1.1 just fine, but I wouldn't recommend it for production servers.
> 
> Thanks for all the information, and proof. Very useful.
> 
> The servers will just have systemd, fleet, etcd, puppet/salt clients,
> docker and LXC + minimal base system. Like you say the containers will
> do all the work. This is for a production build environment but will
> also host production repositories, and later host production services
> using docker (with lots of support from LXC).
> 
> To me, nothing in the container world feels really 'stable', not the
> way OpenVZ is anyway. The 'servers' are probably going to be cloud
> VMs anyway and Utopic uses stable 3.16 kernel I think so I guess the
> main thing is how well LXC and docker play with 3.16 kernel.
> 
> I mainly want to use unprivileged LXC containers, and the download
> images from linuxcontainers.org. Possibly live migration, but that's
> a nice-to-have.
> 
> Would you recommend I stick to LXC 1.0 for production servers?
> Is it easy to install LXC 1.0 on Utopic?

I personally use lxc from ppa:ubuntu-lxc/daily on my server.  I use it
for several containers and it's been I think two years since I had a
problem due to running daily;  but none of mine are "production".