KVM

Some steps to get a virtual machines on Debian/Ubuntu...




1. Install empty Debian/Ubuntu distr.
2. Install bridge-utils
   $ sudo apt-get install bridge-utils
3. Add bridge interface br0 into /etc/network/interfaces as below: 
    auto eth0
    iface eth0 inet manual
    auto br0
    iface br0 inet static
        bridge_ports eth0
        address .....
instead
     allow-hotplug eth0
     iface eth0 inet static
         address .....

restart networking

     services networking restart

if ok
    go to the next step;
else
    find and resolve error;

4.  Install another packets for virtualization
     $ sudo apt-get install qemu, qemu-kvm libvirt-bin virtinst

5. Check virt. module
    $ sudo lsmod | grep kvm
   if ok - go to the next step

6. Add forwarding into /etc/sysctl.conf
    net.ipv4.conf.all.forwarding=1
    net.ipv4.conf.all.proxy_arp=1

   And after  
    $ sudo sysctl -p

7. Install packets for rdp access and visual maintenance of virtual hosts
     $ sudo apt-get install virt-manager lxde-core xrdp

8. Add  your user to /etc/group in line with libvirt:
it's need for remote maintenance

9. Connect via rdp to host and add virtual hosts.

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