Telmo Sampaio joins Scott Hanselman to discuss & demo a solution for implementing a high availability configuration for most types of network virtual appliances (NVA), which was created by the Azure CAT Patterns and Practices team at Microsoft. The NVA monitor client is implemented as a ZooKeeper client running in a Docker container, while a ZooKeeper server ensemble runs in multiple Docker containers and provides concurrency and leader election for the NVA monitor client nodes. For more information, see Highly Available Ingress/Egress with layer 7 NVAs.