The dockerd daemon is the core of docker.

start the daemon

automatically

  • default installation will configure daemon start automatically
  • Linux (systemd)
  sudo systemctl enable docker
  sudo systemctl disable docker
  • docker is automatically configured using upstart.

manually

  dockerd

Configure the docker daemon

  1. Json configuration file /etc/docker/daemon.json' orc:\progarmdata\docker\daemon.json`

  2. flag

Daemon directory

  • /etc/lib/docker
  • c:\programdata\docker
  • can configure it with data-root flag