Opening the Black Box: Understanding and Troubleshooting Calico's eBPF Data Plane

Dive into the intricacies of Calico's eBPF data plane in this 29-minute conference talk from KubeCon + CloudNativeCon Europe 2023. Explore troubleshooting techniques for Kubernetes deployments using Calico Open Source's eBPF mode, a popular container networking and security solution. Learn to navigate the challenges of inspecting and diagnosing issues in eBPF environments, where traditional tools like iptables-save and conntrack are no longer applicable. Gain valuable insights into eBPF maps, routes, connections, contracts, services, IP pools, connection tracking, and network policies. Discover how to leverage fine-grained logging, policy dumps, and eBPF counters to effectively troubleshoot and understand the inner workings of Calico's eBPF data plane. Equip yourself with the knowledge to contribute to the Calico Open Source project and enhance your Kubernetes troubleshooting skills.

Introduction
Overview
What is Calico
What is Calico multiplatform
What is eBPF
IPtables vs eBPF
User feedback
What this talk is about
ppf maps
Routes
Connections
Dumping Contracts
Services in Play
IP Pool
Connection Tracking
Network Policies
Policy Dump
eBPF Map
eBPF counters
Policy dumps
Log level
Filtering
finegrained login
login examples
services and network as translation
Conclusion