First we install debian lenny. There is many howtos in this topic, so I will assume that it`s done.
Now on fresh debian minimal install we add to /etc/apt/source.list as below:
aptitude install proxmox-ve ntp ssh lvm2
Then we accept and agree to every aptitude suggestion. At this moment You will be asked also to confirm changes by writing Yes.
Now we wait. Notice that Your kernel will change to linux-image-2.6.26-2-openvz-686. That is very good Remember to install and check boot loader before You reboot. System may become unbootable 😛
After successful reboot enter Your linux box ip address in the web browser and login using Your root password on Proxmox interface login page.
Have a nice day
For proxmox it is usefull to create bridge interface, so virtual machine interface can be added to this bridge. To do this edit file /etc/network/interfaces to fit Your needs, an example:
# network interface settings auto lo iface lo inet loopback iface eth0 inet manual iface eth1 inet manual auto vmbr0 iface vmbr0 inet static address 192.168.1.100 netmask 255.255.255.0 gateway 192.168.1.1 bridge_ports eth1 bridge_stp off bridge_fd 0