fb0b375be7
Ensure the docker daemon creates a file containing its PID under /var/run/docker.pid. The daemon takes care of removing the pid file when it receives either SIGTERM, SIGINT or SIGKILL. The daemon also refuses to start when the pidfile is found. An explanation message is shown to the user when this happens. This change is required to make docker easier to manage by tools like checkproc which rely on this information. |
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docker.go |