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If you’ve ever seen the 1960’s live-action Batman TV show, you’ll know that one of the defining characteristics of the show was its use of comic-book style words overlaying the action scenes, a technique pioneered in comic books by Roy Crane: It was Crane…

Ah, the good old days: when computers were chunky, the Internet was a dream of the future, and you could make a cup of coffee while waiting for a screenful of text to display.

In this post, we take a look at how to apply custom Nginx configuration directives when you’re using the NGINX Gateway Fabric.

I recently found myself wanting to perform a few transformations on a large OpenAPI schema.

A software fixture “sets up a system for the software testing process by initializing it, thereby satisfying any preconditions the system may have”.

Last week, Oskar Stenberg asked on Unix & Linux if it were possible to configure connectivity between two networks, both using the same address range, without involving network namespaces.

Overview I was recently working with someone else’s C source and I wanted to add some basic error checking without mucking up the code with a bunch of if statements and calls to perror.

I’ve been using a Garmin Fenix 6x for a couple of weeks and thought it might be interesting to put together a short review.

In this question, August Vrubel has some C code that sets up a tun interface and then injects a packet, but the packet seemed to disappear into the ether.

My internet service provider (FIOS) doesn’t yet (sad face) offer IPv6 capable service, so I’ve set up an IPv6 tunnel using the Hurricane Electric tunnel broker.

In today’s post, we look at KeyOxide, a service that allows you to cryptographically assert ownership of online resources using your GPG key.

Hello, future me.

We are working with an application that produces resource utilization reports for clients of our OpenShift-based cloud environments.

This post is mostly for myself: I find the Traefik documentation hard to navigate, so having figured this out in response to a question on Stack Overflow, I’m putting it here to help it stick in my head.

I like to fiddle with Micropython, particularly on the Wemos D1 Mini, because these are such a neat form factor.

I’ve been a regular visitor to Stack Overflow and other Stack Exchange sites over the years, and while I’ve mostly enjoyed the experience, I’ve been frustrated by the lack of control I have over what questions I see.

At $JOB we maintain the configuration for our OpenShift clusters in a public git repository.

Red Hat’s OpenShift Data Foundation (formerly “OpenShift Container Storage”, or “OCS”) allows you to either (a) automatically set up a Ceph cluster as an application running on your OpenShift cluster, or (b) connect your OpenShift cluster to an externally…

In this post, we’ll walk through the process of getting virtual machines on two different hosts to communicate over an overlay network created using the support for VXLAN in Open vSwitch (or OVS).

Kustomize is a tool for assembling Kubernetes manifests from a collection of files.

I sometimes find myself writing articles or documentation about git, so I put together a couple of terrible hacks for generating reproducible histories and pretty graphs of those histories. git synth The git synth command reads a YAML description of a rep…

This is just a note that I’ve substantially changed how the post sources are organized.

While working on a pull request I will make liberal use of git rebase to clean up a series of commits: squashing typos, re-ordering changes for logical clarity, and so forth.

OpenShift Container Storage (OCS) from Red Hat deploys Ceph in your OpenShift cluster (or allows you to integrate with an external Ceph cluster).

Performance of the primary PyPi service has been so bad lately that it’s become very disruptive.

The SYM-1 is a 6502-based single-board computer produced by Synertek Systems Corp in the mid 1970’s.

Let’s say you have a couple of sensors attached to an ESP8266 running MicroPython.

I recently put together a short animation showing the spread of Covid throughout the Northeast United States: I thought it might be interesting to walk through the process I used to create the video.

I found the following error from gpgv to be a little opaque: gpgv: unknown type of key resource 'trustedkeys.kbx' gpgv: keyblock resource '/home/lars/.gnupg/trustedkeys.kbx': General error gpgv: Can't check signature: No public key It turns out that’s gp…

Out of the box, OpenShift (4.x) on bare metal doesn’t come with any integrated load balancer support (when installed in a cloud environment, OpenShift typically makes use of the load balancing features available from the cloud provider).

I’ve had my eye on the Vortex Core keyboard for a few months now, and this past week I finally broke down and bought one (with Cherry MX Brown switches).

At work we have a cluster of IBM Power 9 systems running OpenShift.

This is part of a series of posts about my experience working with OpenShift and CNV.

This is the second in a series of posts about my experience working with OpenShift and CNV.

This is the first in a series of posts about my experience working with OpenShift and CNV (“Container Native Virtualization”, a technology that allows you to use OpenShift to manage virtualized workloads in addition to the containerized workloads for which

[This is a guest post by my partner Alexandra van Geel.]

The folks at Seeed Studio were kind enough to send me a Grove Beginner Kit for Arduino for review.

Since we’re all stuck in the house and working from home these days, I’ve had to make some changes to my home office.

The folks at Seeed Studio have just released the Grove Beginner Kit for Arduino, and they asked if I would be willing to take a look at it in exchange for a free kit.

We’re all looking for ways to keep ourselves occupied these days, and for me that means leaping at the chance to turn a small problem into a slightly ridiculous electronics project.

legendre on #raspbian asked: How can i config rasp lite to open a shell on the serial uart on boot?

I recently acquired a managed switch for my home office in order to segment a few devices off onto their own isolated vlan.

We’ve had some wacky weather recently.

Literate programming is a programming paradigm introduced by Donald Knuth in which a program is combined with its documentation to form a single document.

Introduction A long time ago, I wrote an article all about OpenStack Neutron (which at that time was called Quantum).

I recently acquired my Technician amateur radio license, and like many folks my first radio purchase was a Baofeng UV-5R.

You’re working on a pull request.

Always work on a branch (never commit on master) When working with an upstream codebase, always make your changes on a feature branch rather than your local master branch.

In this article, we will look at what is necessary to run OpenStack’s Keystone service (and the requisite database server) in containers using Docker Compose.

A year or so ago I was diagnosed with sleep apnea, and since them I’ve been sleeping with a CPAP.