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Updating Kubernetes to the Community-Owned Package Repositories

An Unexpected Update

Most days I update my little server when I log into my PC, and today it gave quite an unexpected surprise:

# apt update && apt full-upgrade -y
...
E: The repository 'https://apt.kubernetes.io kubernetes-xenial Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

This was promptly reported already yesterday as Ubuntu kubernetes-xenial package repository issue #123673 and quick triaged pointing to the announcement from August 2023: pkgs.k8s.io: Introducing Kubernetes Community-Owned Package Repositories.

Audiobookshelf on Kubernetes

Migrating a Plex Media Server to Kubernetes, was a significant improvement for the maintenance of the Plex Media Server I use to listen to podcasts and audiobooks, to keep me company while I play games, but after all these years Plex remains a very insufficient and deficient application for audiobooks.

Enter audiobookshelf (because Emby and Jellyfin are also not great)

Audiobookshelf home page

Migrating a Plex Media Server to Kubernetes

Running Plex Media Server on Linux is easy. Updating it is easy too. Re-using the library from an old server on a new one is also quite easy.

That said, running anything in Kubernetes is only slightly harder once, and after that updates are entirely automatic and moving from one cluster to another would be even easier.

Prologue

I’ve been using Plex Media Server for a few years, primarily to catch up with a bunch of podcasts I started listening from their beginning in the spring of 2020, and occasionally to share my Audible library with the family. The family doesn’t really use any of this, specially since they got Spotify, but this library of Podcasts has been a faithful companion of mine for the last few years, at home and abroad.

The Kubernetes cluster running on Lexicon has proven stable and convenient enough that I finally felt motivated to migrate the Plex Media Server, from the stand-alone setup into the Kubernetes cluster.

Single-node Kubernetes cluster on Ubuntu Server (lexicon)

After playing around with a few Docker containers and Docker compose, I decided it was time to dive into Kubernetes. But I only have one server: lexicon.

For the most part I followed Computing for Geeks' article Install Kubernetes Cluster on Ubuntu 22.04 using kubeadm, while taking some bits from How to install Kubernetes on Ubuntu 22.04 Jammy Jellyfish Linux (from LinuxConfig) and How to Install Kubernetes Cluster on Ubuntu 22.04 (from LinuxTechi).