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<li>CPU (*): 4 vCPUs @ 100% execution capacity</li>

<li>RAM: 8 GB</li>

<li>Disk: 60 GB, Virtual Disk Image (VDI), Dynamically allocated</li>

<li>Optical Drive ISO Image: "ubuntu-22.04.X-live-server-amd64.iso"</li>

<li>Optical Drive ISO Image: "ubuntu-22.04.X-live-server-amd64.iso"<ul>

<li>Download the latest Long Term Support (LTS) version of the <em>Ubuntu Server</em> image from <a href="https://releases.ubuntu.com/22.04/">Ubuntu 22.04 LTS</a>, e.g., "ubuntu-22.04.X-live-server-amd64.iso".</li>

<li><strong>Note</strong>: use Ubuntu Server image instead of Ubuntu Desktop to create a lightweight VM.</li>

</ul>

</li>

<li>Network Adapter 1 (*): enabled, attached to NAT Network "TFS-NAT-Net"</li>

<li>Minor adjustments (*):</li>

<li>Minor adjustments (*):<ul>

<li>Audio: disabled</li>

<li>Boot order: disable "Floppy"</li>

</ul>

</li>

</ul>

<p><strong>Note</strong>: (*) settings to be editing after the VM is created.</p>

<h3><u>Install Ubuntu 22.04 LTS Operating System</u></h3>

<p>In "Oracle VM VirtualBox Manager", start the VM in normal mode, and follow the 

installation procedure.

Below we provide some installation guidelines:

- Installation Language: English

- Autodetect your keyboard

- If asked, select "Ubuntu Server" (do not select "Ubuntu Server (minimized)").

- Configure static network specifications:</p>

Below we provide some installation guidelines:</p>

<ul>

<li>Installation Language: English</li>

<li>Autodetect your keyboard</li>

<li>If asked, select "Ubuntu Server" (do not select "Ubuntu Server (minimized)").</li>

<li>Configure static network specifications:</li>

</ul>

<table>

<thead>

<tr>

<ul>

<li>Leave proxy and mirror addresses as they are</li>

<li>Let the installer self-upgrade (if asked).</li>

<li>Use an entire disk for the installation</li>

<li>Use an entire disk for the installation<ul>

<li>Disable setup of the disk as LVM group</li>

<li>Double check that NO swap space is allocated in the partition table. Kubernetes does not work properly with SWAP.</li>

<li>Configure your user and system names:</li>

</ul>

</li>

<li>Configure your user and system names:<ul>

<li>User name: TeraFlowSDN</li>

<li>Server's name: tfs-vm</li>

<li>Username: tfs</li>

<li>Password: tfs123</li>

<li>Install Open SSH Server</li>

</ul>

</li>

<li>Install Open SSH Server<ul>

<li>Import SSH keys, if any.</li>

<li>Featured Server Snaps</li>

</ul>

</li>

<li>Featured Server Snaps<ul>

<li>Do not install featured server snaps. It will be done manually later to illustrate how to uninstall and reinstall them in case of trouble with.</li>

<li>Let the system install and upgrade the packages.</li>

</ul>

</li>

<li>Let the system install and upgrade the packages.<ul>

<li>This operation might take some minutes depending on how old is the Optical Drive ISO image you use and your Internet connection speed.</li>

</ul>

</li>

<li>Restart the VM when the installation is completed.</li>

</ul>

<p><strong>Upgrade the Ubuntu distribution</strong></p>

<li>If asked to restart services, restart the default ones proposed.</li>

<li>Restart the VM when the installation is completed.</li>

</ul>

<p><strong>Install VirtualBox Guest Additions</strong>

On VirtualBox Manager, open the VM main screen. If you are running the VM in headless 

<p><strong>Install VirtualBox Guest Additions</strong></p>

<p>On VirtualBox Manager, open the VM main screen. If you are running the VM in headless 

mode, right click over the VM in the VirtualBox Manager window and click "Show".

If a dialog informing about how to leave the interface of the VM is shown, confirm 

pressing "Switch" button. The interface of the VM should appear.</p>