SRCco.de (Posts about kubernetes)

Saving Cloud Costs with Kubernetes on AWS

Henning Jacobs — Sun, 05 Apr 2020 11:21:00 GMT

How to save cloud costs when running Kubernetes? There is no silver bullet, but this blog post describes a few tools to help you manage resources and reduce cloud spending.

Production Checklist for Web Apps on Kubernetes

Henning Jacobs — Fri, 20 Dec 2019 16:07:00 GMT

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.

How Zalando manages 140+ Kubernetes Clusters

Henning Jacobs — Tue, 08 Oct 2019 18:04:00 GMT

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

Henning Jacobs — Sat, 28 Sep 2019 17:55:00 GMT

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

Henning Jacobs — Tue, 17 Sep 2019 19:45:00 GMT

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

Henning Jacobs — Tue, 10 Sep 2019 19:27:00 GMT

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

Henning Jacobs — Mon, 12 Aug 2019 22:24:00 GMT

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

Henning Jacobs — Sat, 13 Jul 2019 10:40:00 GMT

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.

KubeCon Barcelona Recap

Henning Jacobs — Thu, 30 May 2019 10:40:00 GMT

KubeCon EU happened in Barcelona this year (May 20 - 23). This is my personal conference recap. I will not talk about any of the official KubeCon announcements (as there are enough other places to read about them).

Kubernetes Fails: 3 ways to kill your clusters

Henning Jacobs — Thu, 09 May 2019 20:40:00 GMT

Kubernetes has its virtues and is worth investing in, but it is undoubtedly complex and comes with many operational challenges. We faced many of them on our journey towards "cloud native" at Zalando.