The purpose was to have a Linux box act as a simple router.

Devices:

• Device1, configured with a 10.10.10.10 IP.
• Device2, which will be our router, configured with 2 interfaces: 10.10.10.1 and 192.168.1.245.
• Device3, which is my Internet-facing router, with an internal IP of 192.168.1.1

The router is going to be …

Horrible idea in a production box, but great idea for a single user lab system.

To accomplish this, we'll use the visudo command, which edits the /etc/sudoers file in a safe manner, aka, protect you from seriously messing up your system.

sudo visudo

At the bottom of that file, add (assuming your username is tom, …

Damn, that was a long, drawn out title….

Basics:

• As of this writing, I’m running TrueNAS 12.2

• While I really like TrueNAS, TrueNAS/FreeNAS doesn't support Docker containers.

• The TrueNAS team is working on TrueNAS SCALE, which is Linux-based, and support Docker containers, but it’s still in alpha.

• Once TrueNAS …

While testing out TrueNAS SCALE, I wanted to do some Docker-ing, and following best-practices, I tried to configure non-root access to the Docker daemon.

Fail !

I had added my username to the existing docker group:

sudo usermod -aG docker $USER

But I was still unable to use Docker, unless I was root:

docker ps
Got …

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< …