In the first post of this series I looked at how kubernetes employs a combination of virtual network devices and routing rules to allow a pod running on one cluster node to communicate with a pod running on another, as long as the sender knows the receiver’s pod network IP address. If you aren’t already familiar with how pods communicate then it’s worth a read before continuing. Pod networking in
![Understanding kubernetes networking: services](https://cdn-ak-scissors.b.st-hatena.com/image/square/4edc3865fdc4bd924855f617494e436b7d5cd9b5/height=288;version=1;width=512/https%3A%2F%2Fmiro.medium.com%2Fv2%2Fresize%3Afit%3A1200%2F1%2ApIHETdF_CVLor_Qws9XUAA.png)