KubeCon + CloudNativeCon Europe 2020

Learn how to build applications that span across more than one Kubernetes region by using a NATS based global communications network. In this talk, it will be covered how to setup a globally available NATS cluster using multiple Kubernetes regions from 4 different clouds (AWS, Digital Ocean, GKE & Azure) using NATS gateways and leafnode connections, as well as how to create applications that take advantage of the NATS decentralized authorization model by showing how to implement a simple Slack-like clone that runs under your terminal.

Attendees of this session will be able to follow through the implementation of the service (and interact with each other!) during the talk, to run the examples it is recommended to have Docker installed.

Networking in Kubernetes has several aspects, including DNS, iptables, routing, software bridges, IP assignment, network policies, etc. While the practices for understanding the network were fairly easy to translate from physical servers to virtual machines, the level of complexity increases greatly when moving to containers in Kubernetes.

This tutorial will explain several of the networking concepts used in Kubernetes with accompanying lab exercises in a virtualized environment so that participants will become comfortable looking under the hood at how a Kubernetes cluster is working (or not working, as the case may be).

The material will be designed for people comfortable with SSH, bash, kubectl, and basic networking concepts, and will fill in the more advanced networking knowledge as the tutorial progresses. Please have Vagrant + VirtualBox installed to run the labs locally.