A simple issue at work with cloud hosts not being able to access an NFS mount on-prem turn into a multi-month bug hunt which ended with finding a low MTU network path and an AWS "feature" (pronounced bug)

One of the most important parts of a working cluster is the interconnection and communication between nodes. While the networking side will not be covered now, a very important aspect will be: passwordless SSH.

The basics of getting a cluster of Raspberry Pis powered on and running. Full cluster configuration in later posts.