Stop Guessing Your Node Groups: A Deep Dive Into Karpenter on EKS
If you have run a production EKS cluster for more than a few months, you already know the ritual. You size your node groups based on a rough estimate of peak load. You pad that estimate, because nobody wants a 3 a.m. page about pending pods. Then you watch the bill creep upward while kubectl top nodes quietly tells you that half your fleet is idle. That is not a scheduling problem. It is a forecasting problem, and Kubernetes was never designed to solve forecasting on its own. This post walks th…