It looks like this is more like "k3s up" to bootstrap k3s, which I just learned is purportedly a lightweight Kubernetes [1]. They named it K3s because:
> We wanted an installation of Kubernetes that was half the size in terms of memory footprint. Kubernetes is a 10-letter word stylized as K8s. So something half as big as Kubernetes would be a 5-letter word stylized as K3s. There is no long form of K3s and no official pronunciation.
> We wanted an installation of Kubernetes that was half the size in terms of memory footprint. Kubernetes is a 10-letter word stylized as K8s. So something half as big as Kubernetes would be a 5-letter word stylized as K3s. There is no long form of K3s and no official pronunciation.
[1]: https://rancher.com/docs/k3s/latest/en/