[{"data":1,"prerenderedAt":16},["ShallowReactive",2],{"blog-tag-en-prometheus-adapter":3},[4],{"path":5,"title":6,"description":7,"date":8,"tags":9},"\u002Fblog\u002Fen\u002Fk3s-hpa-prometheus-adapter-discovery-interval-stale-metrics","Question Your discoveryInterval: Why K3s HPA Keeps Scaling on Stale Metrics from Prometheus Adapter","K3s HPA won't scale even though CPU usage looks normal. The culprit is a mismatch between Prometheus Adapter's metrics-relist-interval\u002Fmetrics-max-age and the HPA sync-period. Here's the three-layer delay chain and how to diagnose it.","2026-10-12",[10,11,12,13,14,15],"k3s","kubernetes","hpa","prometheus-adapter","autoscaling","observability",1792592708644]