What is a Process Manager? (aka supervisor)

About

process manager are applications that starts and manage processes.

They are mostly used as VM entrypoint to start multiple processes.

init systems are process manager.

List

• overmind that works with a Procfile
• runit: Small
• supervisord: (install Python)
• S6 - s6-overlay project for Docker containers. Example application: the litestream-s6 repository.