How to connect to VirtualBox on the network

Sometimes I experiment on virtual machines with Linux Ubuntu Server and in order to be able to connect to them by IP address, open VirtualBox, select the desired machine, open “Configure” – “Network” and see that in the “Adapter 1″ tab there is a standard tick on ” Enable network adapter “and” Connection type: NAT “is selected. It is necessary for the Internet to work on the virtual machine.
You can change to “Network Bridge” and the virtual machine will try to get IP in the same network as the physical computer, for example from a router, and will also be visible on the network.

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Why in VirtualBox you cannot choose 64-bit versions

I noticed somehow on one installed VirtualBox that when adding a workstation, you can select the type of system only 32-bit.

To solve this problem, first of all you need to restart your computer and go into the BIOS when you turn it on (most often by pressing the DEL or F8 key), there you can activate the “Intel (R) Virtualization Technology” function (the name may differ slightly usually located in the Advanced section and the CPU), in my case it was turned off, and on many computers I noticed that it was disabled as standard.
To enable, change from Disable to Enable, save the settings and exit the BIOS (by selecting Save & Exit or similar).

After that, VirtualBox has the opportunity to choose the type of 64-bit systems.

It may also be necessary in the “Control Panel” to open the “Uninstall a program” button on the left “Enable or disable Windows components” and uncheck the “Hyper-V” box if it is installed.


Installing Docker CE on Ubuntu

Docker CE – a software platform for deploying applications, packaging applications into a container, adding libraries and all the necessary dependencies to run the application, which allows you to quickly launch the code in almost any environment. There is a free version of Docker Community Edition (CE) and Enterprise Edition (EE).

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Installing oVirt

oVirt — virtualization management system.

On the test, I will install oVirt in CentOS 7.

First of all, let’s add an official repository:

yum install

Update the packages:

yum update

It is desirable to reboot the system if the kernel was updated:


Install the oVirt Engine and all dependencies:

yum install ovirt-engine

This completes the installation of the oVirt Engine and you can proceed to setup by following the on-screen instructions:


By the end of the configuration, access information will be displayed and the oVirt panel can be opened in the browser