DevConf.US 2022

conmon, or container monitor, is a process responsible for watching over containers after they've been configured by a container manager like CRI-O or podman, and before they've been started by an OCI runtime like runc or crun. Initially written in C, it mirrors logs, watches for OOM kills and handles container exiting procedures.

However, with the world moving towards the edge, and pods becoming a ubiquitous form of container operation, conmon is due for an update. And what better language to do so with than in Rust!

conmonrs is a rewrite of conmon, in rust! Some design goals of conmonrs include: updating to one agent per pod, keeping a minimal memory footprint to reduce CRI-O's (and thus Kubernetes's) memory overhead per pod, and taking on some of the management of pods for CRI-O and podman.

Join Peter Hunt in this talk to take a tour of where everyone's favorite container agent has been, and hear about where it's headed.