Recently, I was tasked with analyzing cross-AZ traffic in Kubernetes to identify opportunities for reduction, as it is a significant contributor to our AWS bill. The first step was to understand how…

eBPF

The post provides a comprehensive guide on analyzing inter-pod traffic in Kubernetes, with a focus on cross-AZ communication to reduce AWS costs. It leverages eBPF technology using tools like Retina, Prometheus, and Grafana. The article covers the setup of a sample environment, configuration of monitoring tools, and how to capture and analyze traffic metrics to optimize network performance across Kubernetes clusters.

Monitoring Inter-Pod Traffic at the AZ Level with Retina (an eBPF based tool)