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Thomas Stringer
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Connect Kubernetes Applications to Azure Resources with Managed Service Identities

Authentication is a difficult problem, and even in a cloud-first/cloud-native world it is still a tough problem to solve. A feature in Azure that makes this much easier to approach is Managed Serv...

Why I Prefer systemd Timers Over Cron

systemd has become a mainstay for the Linux world, but one of the things that still seems to stick around is cron jobs. It’s understandable, as cron is a tool that we have been using for a long tim...

Dump Manifests for all Revisions for a Helm Release

Being able to diagnose what changed in a Helm chart is an important requirement. One of the tools that we can use to see what exactly Helm is deploying to our Kubernetes cluster is by running helm ...

7 Reasons to Use the Terminal

Many programmers and engineers understandably find the terminal to be an unapproachable environment for productivity. And for good reason: There is a learning curve with the terminal before you can...

Kubernetes API Groups, Resources, and Verbs

I recently talked about how to setup RBAC for a particular scenario. One of the key features of RBAC are roles. Here is what that particular role looked like… role.yaml apiVersion: rbac.authoriza...

Running kubectl Commands From Within a Pod

It is common to work with Kubernetes resources from within internal pods. The platform is obviously a great scheduler and orchestrator, but you may have custom logic that needs to make decisions fr...

Getting systemd unit dependencies

One of the difficult things of any init system is understanding how everything is all connected… what runs and when. One of the great things about systemd is that it makes it a fairly straightforwa...

Moving Away From Medium (mostly) to GitHub Pages For My Blog

I’ll keep this one short, because it’s a small decision with a small amount of reasons for the choice. For the past few years I have been using Medium as my writing platform. It’s been great, and c...

Searching Through All systemd Unit Files for a String

I was recently working on an issue where I had a systemd service that I didn’t want to run anymore (but I didn’t want to remove the service itself, and I also didn’t want to mask it). The obvious a...

Talking to systemd Through dbus with Python

As users of systemd, it is a fairly common to use systemctl to interact with the system manager. But what if you’re writing code and you want to programmatically interact with units and services? O...