tl;dr - I upgraded my small single-node cluster (6C/12T 16GB Ubuntu 18.10 Hetzner dedicated server) to Kubernetes 1.15 from 1.13. See the TLDR summary section section for the list of steps (basically, use kubeadm). I run a tiny single-node kubernetes cluster which hosts this site, client demos, experiments, and many of my own projects – I’ve written about it lots over the years, and today I thought I’d cover one of the mostly mundane (for my setup) parts of running Kubernetes – upgrad...