Ops Development Stories

Jan 19, 2022 · Cloud Native

Why PID 1 Matters: Unraveling Linux Init and Docker Container Signals

Linux’s PID 1, the init process, is the first user‑space program that spawns all other processes, and in Docker containers it becomes the container’s root process, handling signals uniquely; understanding its behavior and using tools like Tini are essential for reliable container orchestration.