Are you running VPS as a hosting solution? And do you want to know what kind of virtualization is it running on? Is it OpenVZ, V-server, Xen or UML, and how can I confirm this?

If you’re using OpenVZ, you owe it to yourself to take a look at /proc/user_beancounters every now and again (the last column of this file makes a lot of sense, as it indicates protential problems), but when errors occurred in a container, mostly you lose your chance to run any command in that [...]

By default OpenVZ is using VENET as network device. It does packet switching based on IP header, which makes it look like a point-to-point connection between VPS and the physical host. An alternative device is Virtual Ethernet device (a.k.a. VETH).

This article will describe how to create OpenVZ container in CentOS 5.4. With OpenVZ you can create multiple Virtual Private Servers (VPS) on same hardware machine and running them simultaneously and efficiently. OpenVZ is the open-source branch of Virtuozzo, a commercial virtualization solution widely [...]

In virtualized environment, we sometimes need to generate MAC address for each virtual machine at the time of creation. Since is a nearly unlimited amount of numbers on the same subnet, it is almost impossible that we would get the same MAC address. In the follwing paragraph, we’ll show you how [...]