What are the limitations? For example: if I have a Python script that makes some HTTPS requests, will this runtime provide to my compiled binary everything it needs to perform this task?
The idea behind the project is to run WebAssembly modules in Kubernetes. You would have to compile your Python script to WebAssembly before it could be executed.
If your WebAssembly module complies with the WebAssembly System Interface, Krustlet can run it.
It's important to note that the WASI standard and wasmtime are still under heavy development. There are some key features (like networking) that are currently missing, but will be made available in future updates.
Maybe a dumb question, but can I run Krustlet in the browser? (maybe via browser WASI polyfill?). Does this mean you could assemble ad-hoc clusters using volunteer browsers? Not saying one _should_, but could you?
Krustlet is not in WebAssembly itself. It's an implementation of kubelet in rust that runs WebAssembly inside WASI or WASCC runtime, not other way around.
From what I can understand, this runs webassembly artifacts natively on a k8s cluster. So where you'd normally be running a docker container on the cluster, you'll instead run a webassembly binary or multiple copies of them.
I can't answer your question exactly, but I assume that it can run any compiled binary.
