Full Virtualization vs. a Chroot Environment

Virtualization is extremely popular in the server world right now, and many organizations swear by it. Still, there are some IT people that will look at individual virtualization examples and say to you, “Why don’t you just use a chroot environment.” There are pros and cons to this method, and we will discuss the benefits […]

How to Run Virtualbox in “Headless” Mode

In previous posts, we learned how to use Virtualbox to create a virtual machine, install a guest operating system, and then use the VM as a test server. Now that you know how to make a test server, you might want to know how to run it on a […]

How to Connect to a Virtualbox VM Via SSH (Part 2)

Continued from Part 1. Next, you need to configure Virtualbox to appear on your network. You can do this by using a second virtual network device. Do the following:

Click File…Preferences
Choose “Network” and add a new device if one is not already present by click the green plus.
You should then have a device called vboxnet0 or […]

How to Connect to a Virtualbox VM Via SSH (Part 1)

In some previous posts, you learned how to setup a Virtualbox virtual machine (VM) for the purpose of creating a test server environment. Once you have a functioning test server, you are free to always work on it within the virtual machine, but if you ever want to connect to it remotely, you probably soon […]

How to Install CentOS in VirtualBox

Virtualization is a great tool for testing, learning, and general server skills practice. Using a virtualization tool like VirtualBox, you can install a server operating system within a virtual machine on your desktop or laptop. Once installed, you can pretty much do whatever you want with it and use it to learn more about […]

Remote Server Virtualization with VBoxHeadless

VirtualBox is an excellent tool for running a virtual machine either for testing or production environments.  The default setting, however, is for a desktop computer, requiring a graphical interface to run it.  On your Linux server, there usually is no graphical interface.  For that reason, VirtualBox has a feature called VBoxHeadless, which allows you to […]

How to Try Out Server Upgrades Before Installing

Major OS or software upgrades can be exciting for a system administrator, but they can also be a little frightening.  What if something breaks?  What if you lose everything and have hours or even days of down time?  This can be especially troubling if you have web applications and are […]

Test Your Server OS with VirtualBox

When you get your first dedicated server, the last thing you want to do is experiment on it, especially if your server is already live on the Internet. Instead, you can use a virtual machine to run the same operating system installed on your server. With it you can do whatever kind of […]

Using Virtualization to Host Multiple Operating Systems

In many cases, virtualization is used to create Virtual Private Servers (VPS), which essentially make small duplicates of the same operating system within directories that appear to the user as servers within themselves.
A VPS, however, is not the only use for virtualization. In some cases, you may actually want to run a completely different […]