Surviving Day 2 - How to Troubleshoot Kubernetes Networking

Kubernetes networking is a crucial component of any platform, and this talk dives into the intricacies of troubleshooting it. Thomas Graf from Isovalent explores the inner workings of Kubernetes networking, provides essential tools and techniques for effective troubleshooting, and discusses preventive measures. Key topics covered include understanding the Kubernetes networking model, resolving DNS errors, debugging Kubernetes Services and Ingress, locating network errors, differentiating between app, CNI, and underlying network issues, troubleshooting Network Policy drops, and setting up metrics and alerting for proactive network incident prevention. The presentation features live demonstrations and utilizes tools like Hubble for enhanced network observability.