Your HPA Config Is Correct. So Why Won't Pods Scale? The Real Cause of 'Unknown Metrics' in K3s and the HPA/VPA Death Spiral
You set up an HPA in K3s and Pods still won't scale. The usual culprits are unset resource requests silently disabling metrics, and a self-reinforcing HPA/VPA feedback loop. Here's how to diagnose and fix it.