Electing a Works Council in Germany 2020-02-24

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Zalando SE is getting a works council (Betriebsrat). This blog post describes what I learned about the election process.

My Python Project Setup 2020-01-24

I have 8+ Python Open Source projects on github.com and on codeberg.org. This post describes my current set of tools and practices I use for maintaining them.

Production Checklist for Web Apps on Kubernetes 2019-12-20

Running applications in production can be tricky. This post proposes an opinionated checklist for going to production with a web service (i.e. application exposing HTTP API) on Kubernetes.

My Favorite F-Droid Apps 2019-12-15

I try to use Open Source Android apps whereever I can. F-Droid is a community-maintained software repository which contains only free software apps. This posts describes my favorite F-Droid apps.

How Zalando manages 140+ Kubernetes Clusters 2019-10-08

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Recently I was asked "how do you manage that many Kubernetes clusters?". This post tries to provide some insights on how we manage 140+ Kubernetes clusters on AWS at Zalando.

Liveness Probes are Dangerous 2019-09-28

Kubernetes livenessProbe can be dangerous. I recommend to avoid them unless you have a clear use case and understand the consequences. This post looks at both Liveness and Readiness Probes and describes some "DOs" and "DON'Ts"

K3s, Traefik, Let's Encrypt, and Local Path 2019-09-17

The story on how I messed up my K3s demo site with Traefik as Ingress controller and Let's Encrypt rate limits — or: how to configure K3s with local-path volumes.

Kubernetes and Python 2019-09-10

While Go is the language-of-choice in the cloud-native world, Python has a huge community and makes it really easy to extend Kubernetes in only a few lines of code. This post is a follow-up to a talk I gave last week in Prague.

Kubernetes Web UIs in 2019 2019-08-12

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This post takes a look at different open source Kubernetes web UIs, my requirements, and why I created Kubernetes Web View to help with support and troubleshooting across multiple clusters.

Kubernetes on AMD64 with PC Engines APU2 2019-07-13

I want to run Kubernetes on amd64 hardware. I already own two Raspberry PIs, but I always struggle with ARM and the need to create custom Docker images. This post explains how to run a single-node Kubernetes (K3s) on the PC Engines APU2 board with an embedded AMD CPU.