Self-healing GPU nodes in Kubernetes: What we learned building the EKS node monitoring agent
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Self-healing GPU nodes on EKS; directly relevant to cloud infrastructure and observability.
Summary
AWS open-sourced the EKS Node Monitoring Agent to detect GPU node failures (e.g., GPU dropping off PCIe bus) and write NodeConditions that trigger Karpenter-driven replacement. Operating across tens of thousands of clusters revealed hard lessons: reason codes form an API contract where renames are breaking changes, and jitter is critical to prevent interference with GPU workloads. The agent integrates with EKS Auto Mode, which automates compute provisioning and node repair out of the box.