Kubernetes pod eviction storms can cripple production clusters, often triggered by OOM (Out of Memory) or node pressure conditions. This article presents a systematic debugging approach, starting from identifying eviction events in kubelet logs to tracing resource contention across nodes. It covers key metrics to monitor, such as memory pressure, disk pressure, and PID pressure, and explains how to correlate them with pod lifecycle events. The guide also discusses mitigation strategies, including resource quota adjustments, pod priority classes, and node capacity planning. For DevOps and SRE teams, understanding this full-chain debugging process is critical for maintaining cluster stability and minimizing downtime. The content is evergreen and applicable to any Kubernetes distribution, making it a valuable reference for production operations.
A practical guide to diagnosing and resolving Kubernetes pod eviction storms caused by OOM and node pressure, with actionable debugging steps.