I recently bought a new headless server to handle virtual machines.

I decided to go with the built-in KVM ability of Ubuntu, and used Ubuntu Server 20.04 since it's a LTS (Long Term Support) release.

Unfortunately, there is no built-in ability to remotely manage virtual machines, and while I love the command line, I …

I bought a new server, specifically to run virtual machines (VMs).

KVM described, directly from RedHat:

Kernel-based Virtual Machine (KVM) is an open source virtualization technology built into Linux®. Specifically, KVM lets you turn Linux into a hypervisor that allows a host machine to run multiple, isolated virtual …

By default Docker needs to be run as the root user.

Not practical or advisable in a production, or shared system to be consistently logged in as root (think running with scissors).

Out of the box, attempting to run Docker as a non-root user gets this error:

whoami
tom

docker run hello-world
docker: Got permission …

Doing some lab testing, and needed to add another interface on an Ubuntu server virtual machine.

Quickly added it via the host (TrueNAS), but it came unconfigured and uninitialized.

The interface is in a down state, so it doesn't show up in ifconfig without using a switch:

ifconfig
enp0s4: flags=4163< …