[systemd-devel] Howto run systemd within a linux container

[Greg KH]

On Thu, Feb 06, 2014 at 10:55:01AM +0000, Daniel P. Berrange wrote:
> On Wed, Feb 05, 2014 at 11:44:33PM +0100, Richard Weinberger wrote:
> > Hi!
> > 
> > We're heavily using Linux containers in our production environment.
> > As modern Linux distributions move forward to systemd have to make sure that
> > systemd works within our containers.
> > 
> > Sadly we're facing issues with cgroups.
> > Our testbed consists of openSUSE 13.1 with Linux 3.13.1 and libvirt 1.2.1.
> > 
> > In a plain setup systemd stops immediately because it is unable to
> > create the cgroup hierarchy.
> > Mostly because the container uid 0 is in a user namespace and has no
> > rights to do that.
> 
> FYI I have succesfully run Fedora 19 with systemd inside a container
> with libvirt LXC, however, I did *not* enable user namespaces. Every
> time I try user namespaces I find some other bug in either the kernel
> or libvirt, so I wouldn't be surprised if yet more breakage has
> occurred in user namepsaces :-(

Those bugs should now be fixed, if you don't enable the option, how are
we supposed to know what is left to be done?  :)

greg k-h