Virtuozzo requires that a different license be installed per each server. The license can be installed from a product key or an activation code with the vzlicload -p command and from a license file with the vzlicload -f command:
# vzlicload -p <key_or_code> # vzlicload -f <license_file>
When you install a product key or activate a code, a license file is generated and installed in the etc/vz/licenses/ directory on the server. The difference between the product key and activation code is that the code needs to be activated online, so the server must be connected to the Internet. To activate the code, the installation tool accesses the Key Authentication (KA) licensing server and transmits the specified activation code to it. The KA server generates a license file, sends it back, and the license file is installed on the server automatically.
