Re: [Libvir] [RFC] Add Container support to libvirt

On Thu, 17 Jan 2008, Shuveb Hussain wrote: > On Jan 17, 2008 2:30 AM, Dan Smith <danms(a)us.ibm.com&gt; wrote: >> DL> <network> >> DL> <ipaddress>192.168.1.110</ipaddress> >> DL> <hostname>browndog</hostname> >> DL> <gateway>192.168.1.1</gateway> >> DL> <nameserver>192.168.1.1</nameserver> >> DL> <netmask>255.255.255.0</netmask> >> DL> </network> >> >> This is me showing my complete ignorance here, but can you enforce the >> hostname inside a container like that? I would expect that to be done >> by the init scripts inside a container, much like a real machine. > > It is most flexible to manage virtual machines from the base machine > on which they run. The idea is to run an agent on the base machine > alone that is able to configure all virtual machines without the need > to have agents inside of each of the virtual machines. When an OpenVZ > VPS is being created, the tools actually set /etc/resolv.conf and also Containers would similarly be managed from the init namespace. [On 2.6.24 kernel ensure you have cgroup and controllers support included - CGROUP_* set of config options. Then mount as follows - mount -t cgroup -o ns none /containers] If a Container is clone()ed now it will automatically show up in /containers as node_<pid> of the child. One can then rename this to the desired name as well as pass the desired hostname as part of the configuration for the Container wherein its init task/script can set the hostname. Am I understanding and correlating the above correctly to what you mention wrt OpenVZ?