Troubleshooting On-Premise Kubernetes Network: Underlay, Overlay and Pod

Networking is hard. Kubernetes networking can be even harder, especially in on-premise envirnment. Once you install Kubernetes on-premise, you need to manage both network: underlay and overlay. So in …

Networking is hard. Kubernetes networking can be even harder, especially in on-premise envirnment. Once you install Kubernetes on-premise, you need to manage both network: underlay and overlay. So in case of network issue, operator needs to identify where the error comes from. In addition to container developer, they want to tapping certain pod traffic to somewhere to check the network, too. Based on the last KubeCon presentation by Minhan and Rohit, this talk will presents more practical approach to solve network troubleshooting for on-premise Kubernetes environment, including how to check overlay and underlay network information and how to tapping pod network traffic independent overlay network.