Nested Virtualization referes to running a virtualization platform (such as Hyper-V or WSL) inside a VPS (Virtualization within Virtualization) and in order to employ this feature, you can do the followings:
1. The first and most important step is to ensure that the Virtualization capability (VT-x or AMD-V) is available to the OS on the server.
Note This feature is not enabled by default on the servers. To enable that, send a ticket.
2. After the Virtualization capability has been exposed to your server by us, check that the OS of your server can detect this feature.
In Windows systems, this can be done by checking the Performance tab of Task Manager (press Ctrl + Shift + Esc to open Task Manager)
In Linux based distributions, You can run lscpu | grep Virtualization to see the status of Virtualization (if enabled, it will be AMD-V for AMD based CPUs and VT-x for Intel based CPUs)
3. Next, it is highly recommended (especially on Windows OSs) to update Windows so that you receive the latest fixes for the common bugs and issues.
4. Since we want to install Hyper-V, we proceed with the installation of Hyper-V (steps are based on Windows Server 2022)
From the Start menu, look for Server Manager and in Server Manager window, click on Add roles and features
5. Let the options be on their default state and click on Next button until you reach Select server roles page.
Check the checkbox beside Hyper-v and click Next.
6. There's no need to change anything in the Select features page unless you need extra features in which case, you can check them and then click Next.
7. The subsequent pages are adjustment of the initial settings of Hyper-v which you can let them be as they are or change them based on your needs.
8. Finally, in the Confirm installation selection page, check the Restart the destination server automatically if required and click on Install button.
9. After successful installation of Hyper-v and a mandatory restart, you can find Hyper-v Manager in the Tools section of Server Manager or simply by looking for it in the Start menu.
