TL;DR

Kubernetes v1.34 introduces PSI Metrics for improved resource management and application performance monitoring, now available in beta.

What happened

Pressure Stall Information (PSI) metrics have been integrated into Kubernetes v1.34, allowing operators to better understand node-level resource contention and bottlenecks through detailed performance data.

Why it matters for ops

This update enhances the ability to identify and address performance issues early by providing granular insights into CPU, memory, and I/O pressure on nodes. It supports proactive tuning of resources for optimal application performance.

Action items

  • Enable KubeletPSI feature gate in your cluster
  • Configure Prometheus or a compatible monitoring tool to scrape PSI metrics
  • Review Kubernetes documentation for detailed guidance

Source link

https://kubernetes.io/blog/2025/09/04/kubernetes-v1-34-introducing-psi-metrics-beta/