Cluster Networking

• Each node needs to have at least one network interface with a configured IP address.
• Each node must have a defined hostname
• Each host needs to have a unique MAC address, so be careful when cloning VMs

Below is an image showing which port each Kubernetes component needs to listen on, so ensure these ports are not blocked by any type of firewall.

If etcd is in a separate cluster, we could eliminate ports 2379 and 2380 from the masters.