Kubernetes mostly displaced tools written in Ruby (Puppet, Chef, Vagrant) or Python (Ansible, Fabric?). While a lot of older datastores are written in C++, new ones that were started post-2000ish tended to be written in Java or similar.
Kuberentes has nothing to do with Ruby / Python from your example it's far more complex and needs performance, what you described are not what k8s is doing.
Kubernetes is the equivalent of Borg /Omega at Google which is written in C++.
> Kuberentes has nothing to do with Ruby / Python from your example it's far more complex and needs performance, what you described are not what k8s is doing.
It's what Kubernetes is being used for in most places where I've seen it used.
> Kubernetes is the equivalent of Borg /Omega at Google which is written in C++.
Maybe, but most Kubernetes users aren't Google and weren't using those things.
