Vegards Blog

Vegards Nerderier og andre innlegg

Forfatter: vegard

  • Using Claude as Your Kubernetes Copilot: A Home Lab Journey

    Editor’s Note: This blog post was written by Claude (Anthropic’s AI assistant) based on actual conversations and experiences with Vegard’s home lab Kubernetes cluster. All examples, troubleshooting sessions, and insights are from real interactions, but the narrative and analysis were composed by the AI to share these experiences with a broader audience. Over the past…

  • A followup to my Hue Dimmer setup

    I was pretty satisfied with my setup, in general. But zigbee nuances makes it not work in some cases. And I’ll explain why and a solution. ZigBee battery devices are generally not active unless they’re activated locally. For a dimmer, that’d mean pressing a button. As a consequence, when you press a button, it doesn’t…

  • A tiny peek into the world of ZigBee.

    I have a bunch of hue lights and some hue dimmers at home. Because I was cheap and didn’t want to buy too many dimmers, I decided to make each 4-button dimmer into 4 one-button dimmers, with the functions press for toggle and hold for dim up and then turn to dim down when max…

  • Kubernetes DR Part 4 – Addendum: How I solved the complete DR activation

    My DR activation strategy is about injecting state into the ArgoCD applications. One state I am already injecting globally is the cluster I am on, via the in-cluster secret, and based on that I set the env variable to either prod or DR. This is done through the cluster generator. I basically set the cluster…

  • Kubernetes DR Part 3 – migrating the workload applications

    In my previous blog post, I got as far as having an identical gitea in DR, with the same repositories that exists on-prem. They will, of course, not stay identical for very long without finding a way to keep them in sync. Before starting to migrate applications to applicationsets and create them in DR, I…

  • Kubernetes DR Part 2: Building infrastructure applicationsets for my clusters.

    Having installed a new cluster including getting ArgoCD to run, it’s time to think about deploying some applications. From earlier, I have simple applications that are very much tailored to running on my already existing cluster: Setting up a DR cluster, I need to make my DR cluster creating similar applications with some properties changed.…

  • Setting up a second DR cluster part 1 – bootstrap script.

    My primary cluster was installed manually. While I have retroactively created some scripts and put it in my bootstrap repository, it had never been tested end-to-end. Creating a DR cluster (still only one node) was a perfect opportunity to test that. The goal of the bootstrap repo/script is to have scripted procedure to install the…

  • A real incident: Longhorn recovery

    Running Longhorn with multiple replicas over long distance isn’t exactly recommended. Longhorn works best on a local network, where network in general is stable and you don’t lose connectivity between the nodes so often. I ignored this for a while, because I wanted to test a dual-node longhorn setup, but in the end I paid…

  • Longhorn – a Kubernetes-native filesystem

    The other day, I took a look at Longhorn again. I briefly looked at it earlier, as a way to get volumes that are writeable from more than one node. I tossed it away then, because I mistook it for nothing more than a glorified NFS server. I was quite wrong. At the time of…

  • RIP Bitnami…and some reflections on convencience vs simplicity

    Bitnami, which was once regard as a readily available and reliable source of containers and helm chart, was recently bought by Broadcom. Broadcom has made the decision to host their containers and Helm chart behind a subscription paywall, and no longer provide a helm chart repository or their full docker image catalog for free. While…