Incidentally, I recently learned the origin of the term. Cyber - short for cybernetic - is from the greek κυβερνήτης (kybernetes), meaning helmsman. The original use of cybernetics is in the context of automated control systems, so steering a rudder was a good analogy. It is also the origin for the name k8s.
In my headcanon, I still read k8s as "network of cubes", as in Borg cubes, as Kubernetes itself is a poor man's Borg (as in the thing that Google runs on, named after Star Trek Borg, known for cube-shaped ships referred to as "Borg cubes"). The whole kyber thing sounds like an explanation after the fact, to detach from the Collective legacy.
