What does HackerNews think of crun?
A fast and lightweight fully featured OCI runtime and C library for running containers
Language:
C
On this note, I was really surprised to find Red Hat's OCI runtime is written in C: https://github.com/containers/crun
Is anyone working on a Rust version?
I came across this last week when reading about different container runtimes -- crun is implemented in C[0].
Their explanation:
"While most of the tools used in the Linux containers ecosystem are written in Go, I believe C is a better fit for a lower level tool like a container runtime. runc, the most used implementation of the OCI runtime specs written in Go, re-execs itself and use a module written in C for setting up the environment before the container process starts.
crun aims to be also usable as a library that can be easily included in programs without requiring an external process for managing OCI containers."
They were first to push crun[1], in place of runc, that is your C code in the stack :-)
This depends on the platform you're using. On Fedora and RHEL 9, the default runtime is crun. On RHEL 7 and RHEL 8, the default is runc. In any case they can be swapped as needed.