[root@dk1 tmp]# service docker start
Redirecting to /bin/systemctl start  docker.service
Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.

Jul 25 11:30:52 dk1 systemd: start request repeated too quickly for docker.service
Jul 25 11:30:52 dk1 systemd: Failed to start Docker Application Container Engine.
Jul 25 11:30:52 dk1 systemd: docker.service failed.