Kubernetes Service Discovery and Cluster Communication

Modern cloud-native applications rely on microservices that constantly scale up, down, or relocate. Managing how these dynamic components find and talk to one another is one of the most critical aspects of container orchestration. This text-based course guides you through the core networking mechanisms that keep cluster communication reliable, seamless, and secure. You will transition from understanding basic networking concepts to confidently configuring internal routing for complex distributed systems. Along the way, you will explore how modern infrastructure practices, such as basic service mesh patterns and declarative networking policies, improve security and observability. What you'll learn: - Understand foundational Kubernetes networking concepts, cluster IPs, and pod-to-pod communication - Configure CoreDNS and internal name resolution to allow services to discover each other automatically - Implement Service resources, including ClusterIP, NodePort, and LoadBalancer, for structured traffic routing - Create network policies to secure and restrict communication pathways between specific namespaces and pods - Practice troubleshooting common DNS resolution and connectivity issues using standard command-line tools - Explore modern service mesh concepts for advanced traffic management and mutual TLS encryption This course begins with essential terminology and the basic architecture of container networking, then moves step-by-step into practical configuration scenarios. Written explanations are paired with clear, real-world configuration examples that you can read and analyze at your own pace. This course is designed for software developers, system administrators, and aspiring DevOps engineers who are new to container networking and want to build a solid foundation. No prior networking experience is required. Start reading today to demystify cluster communication and build resilient microservices.