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Coming up with a title that explains the full story here was difficult, so I'm going to try to explain quickly. Yesterday, Docker sent an email to any Docker Hub user who had created an "organisation", telling them their account will be deleted including all images, if they do not upgrade to a paid team plan. The email contained a link to a tersely written PDF (since, silently edited) which was mi

When I heard about the Microsoft Dev Kit 2023, I was surprised by how generous the specifications were for the price? Naturally, I wanted to know if I could run Linux on it. You may also wonder. The answer is: kinda. I'm not sure why you are interested in ARM computers, but for me I got involved with them when porting software to the Raspberry Pi and helping support other Open Source projects to d

TLDR; When I tried netbooting 24 RPi3s in 2017, it failed miserably. Find out what changed when I built my private cloud with the newer Raspberry Pi 4s and K3s. Just over three years ago, I wrote up a blog post exploring why netbooting was interesting for Raspberry Pi, and what kind of problems I ran into due to issues with the firmware available at the time. My original rig had 24 early-generatio

I was very excited about the Raspberry Pi 4, especially when I learned that it was available with 4GB of RAM - perfect for running a Kubernetes cluster using software like k3s.io and kubeadm. There's a number of options I've tried to add cooling to my Raspberry Pi and I thought I'd list them here, how effective they are, and what the cost of each option is. I'll also tell you about a firmware upda

In this post we'll test-drive k3s which is a stripped-down Kubernetes distribution from Rancher Labs. With a single binary and a one-line bootstrap process it's even easier than before to create a light-weight cluster. So grab your Raspberry Pi and get ready to deploy the smallest Kubernetes distribution ever. You may have seen my previous work with Kubernetes and Docker on Raspberry Pi such as Bu

In this post I want to introduce KVM - Linux's native approach to virtualization. There are many different tools available for building production-grade labs or datacenters and private clouds. The tooling, services and support will vary depending on whether the product targets enterprise, small business or open source. Some other examples of hypervisors or virtual machine software include: Microso

This blog post will show you how to create your own Serverless Raspberry Pi cluster with Docker and the OpenFaaS framework. People often ask me what they should do with their cluster and this application is perfect for the credit-card sized device - want more compute power? Scale by adding more RPis. "Serverless" is a design pattern for event-driven architectures just like "bridge", "facade", "fac

Let's write a Python function with OpenFaaS that executes hello-world and then move onto something more. We'll start by deploying OpenFaaS on our machine and then we'll install the CLI and write the handler for our function. OpenFaaS is democratising serverless functions - through Docker containers. Pre-requisites: Docker or Docker Desktop Bash - if you're using Windows then install Git bash Brew

Did you know that you can use your Raspberry Pi to get eyes in the sky? By tuning into radio signals emitted from planes up to 250 miles away from your location you can track flights and it only takes a few minutes and a cheap USB TV stick to get started. Pictured: dump1090 - testing FlightAware Antenna vs a quarter-wave whip and Cantenna This guide will give you a brief introduction into flight t