How to Set Up and Secure Ubuntu as a Virtualization Host

Hello Ubuntu Community,

I'm planning to use Ubuntu as a virtualization host for my organization's infrastructure and would appreciate some advice on the following:

Setting Up Ubuntu as a Virtualization Host:

• Which Ubuntu version and configurations are best suited for hosting virtual machines?
• What are the recommended virtualization technologies to use on Ubuntu (e.g., KVM, LXD, OpenStack), and what are the pros and cons of each?
• Are there any detailed guides or resources that explain how to set up and manage a virtualization environment on Ubuntu?

Security Best Practices:

• What are the best practices for securing an Ubuntu-based virtualization host?
• Any tips on hardening the system to protect against potential threats?
• Can anyone recommend tools or services for monitoring and maintaining security on an Ubuntu virtualization host?

I'd greatly appreciate any insights, documentation, or links to relevant resources that can help me ensure a secure and efficient setup.

Thanks in advance for your help!

Best, Thomas