Kubernetes

Studying for the CKA, I am upgrading my homelab Kubernetes cluster for the first time and I though I should document the process for a better learning experience. Useful links The Kubernetes Documentation Changing the Kubernetes package repository Upgrading kubeadm clusters Upgrading a Kubernetes cluster Upgrading a Kubernetes cluster for the first time can seem scary. Going into this I didn’t really know what to expect. I knew that Kubernetes is complex and has a lot of different parts holding everything together. I also knew that it isn’t as simple as just running an upgrade command. ...

My homelab is growing In December my Christmas gift to my self was a Raspberry Pi 5 and two Lenovo Thinkcenter m720q. Yes, I guess I was nice this year. It was going to be three or four Raspberry Pi 5s, but I change my mind after ordering one Pi and ended up with a mix. Oh well, shouldn’t matter too much. The reason I bought this was to finally set up a Kubernetes cluster in my homelab on bare metal. I have done some experimenting with setting up a K8s cluster in Proxmox. But I didn’t want to have a combined NAS, hyperscaler AND Kubernetes cluster all in one physical machine. And have been wanting to create a Raspberry Pi cluster for a long time. And in my humble opinion, bare metal is just cooler than VMs. ...

The year of Kubernetes There’s a new year, 2026. And there is one thing I’ve heard many many times last year, which is is: If there is one thing or technology your should learn to be relevant as a DevOps engineer, it is Kubernetes. So that is what I intend to do this year, learn Kubernetes. And I am going to document my journey from knowing next to nothing to hopefully becoming a Kubestronaut. ...