What signal does Kubernetes send to a container's main process when a Pod is being terminated?

Question

Accepted Answer

SIGTERM — the standard termination signal sent to PID 1 inside the container, giving the process a chance to shut down gracefully — Kubernetes sends SIGTERM, not SIGKILL. SIGKILL is only used as a last resort after the grace period expires. The signal goes to PID 1 in the container — if that's a shell wrapper instead of your app, the app never receives it.

Answer

SIGKILL — the immediate termination signal sent to PID 1 inside the container, stopping the process without any cleanup window

Answer

SIGINT — the interrupt signal sent to PID 1 inside the container, equivalent to a Ctrl+C initiated by the kubelet process

Answer

SIGHUP — the hangup signal sent to PID 1 inside the container, indicating the controlling terminal session has ended

What signal does Kubernetes send to a container's main process when a Pod is being terminated?

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