OpenVZ is a Virtualization platform. It is based on a single Linux kernel which has been modified to support different Linux virtual environments. On the other hand Xen is a paravirtualization platform, just similiar to hardware emulation. Paravirtualization works by creating an interface between the virtual environment’s OS and the hardware, that queues and responds to the OS requests from OS modified to interact with the paravirtualization interface.

OpenVZ and Xen use different virtualization approaches:

Key Difference :

OpenVZ Commands:

A. vzlist -a : For a list of the VPS’s present on that specific Node.

B. vzctl start VPS_ID : To start the VPS.

C. vzctl stop VPS_ID : To stop or Shut Down the VPS

D. vzctl status VPS_ID : To find out the exact condition of the special VPS

E. vzctl stop VPS_ID -fast : To stop the VPS fast and forcefully

F. vzctl enter VPS_ID : To enter in a special VPS

Configuration Commands :

A. vzctl set VPS_ID -hostname vps.domain.com -save: To set the Hostname of a VPS.

B. vzctl set VPS_ID -ipadd 1.2.3.4 -save : To add a new IP to the hosting VPS.

C. vzctl set VPS_ID -ipdel 1.2.3.4 -save : To delete the IP from VPS.

D. vzctl set VPS_ID -userpasswd root : new_password -save : to reset root password of a VPS.

E. vzctl set VPS_ID -nameserver 1.2.3.4 -save : To add the nameserver IP’s to the VPS.

F. vzctl exec VPS_ID command : To run any command on a VPS from Node.

G. vzyum VPS_ID install package_name : To install any package/Software on a VPS from Node.

[Note : In the OpenVZ Commands VPS_ID refers to the ID of the specific VPS.]