KubeCon + CloudNativeCon North America 2024

You’ve (somewhat) grasped the networking model of a single Kubernetes cluster. But how do you enable Pods to communicate across clusters? How do service discovery and DNS work for a multi-cluster setup? How do you secure inter-cluster traffic and manage certificates? Not sure? Don’t worry - this session will have the answers. We’ll start by outlining the core requirements for workloads to communicate across clusters. You’ll then learn some common multi-cluster networking topologies, like flat and multi-network setups, and how inter-cluster connectivity and IP address management differ for each of them. Finally, we’ll cover some popular tools for managing and securing traffic between clusters, like service mesh, CNIs, and gateways, and discuss their use-cases. You’ll leave this session with a solid understanding of fundamental terms and concepts - like virtual networking peering, external DNS, trust domains, etc - needed for navigating the multi-cluster networking landscape.