CODEWITHSUNDEEP
linuxdockercontainers
SRaj
SRaj

Reputation: 1338

How does docker engine communicate to docker container?

I would like to know how a Docker engine communicate with Docker containers. For example, when we issue a command docker stop <container-id>, the docker engine will stop the container with the <container-id>.

How does these two processes communicate to each other? Is it through signal or some other mechanism?

I understand that Docker CLI talks to Docker Engine via Unix socket (also TCP binding is also possible). What I am looking for is how the Docker engine communicate with Docker containers.

Upvotes: 0

Views: 143

Answers (1)

KamilCuk
KamilCuk

Reputation: 141085

From https://docs.docker.com/engine/reference/commandline/stop/ :

The main process inside the container will receive SIGTERM, and after a grace period, SIGKILL.

Upvotes: 1

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