Always kubernetes, but I’ve heard some engineers with accents say it in a way that sounds like “kubernets”
It's been K - 8 letters - S long enough that everyone at work just calls it "Kates" now, which initially annoyed me to no end, but has kind of grown on me.
K8s was always K-ubernete-s (8 letters)
It was never called "Kubernets".
Always AFAIK. It's a Greek word.
Nitpick, but I think it is from Ancient Greek. A cursory Google tells me the modern Greek descendant is κυβερνήτης/kyvernítis and has a slightly different meaning.
κυβερνήτης is the ancient word too. Maybe they were trying to word play with cube, which by the way also comes from κύβος-kyvos and not kuvos. Exactly same meaning as far as I know, wonder what the cursory google came up as the difference in meaning. Also root for cybernetics...