Kubernetes High Availability: Stacked vs External etcd Explained
The first “production” Kubernetes cluster I ran had a single control plane node. It hummed along happily for weeks, right up until a disk failed and took the whole thing with it. Every pod, every service, gone. That outage taught me what “single point of failure” actually feels like, and it pushed me toward a question that I keep seeing trip people up: when you build a cluster that survives node loss, do you run etcd on your control plane nodes, or on dedicated nodes of its own? ...