[root@localhost ~]# systemctl start docker
Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xe" for details.
[root@localhost ~]# systemctl status -l docker
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
Active: failed (Result: start-limit) since 四 2020-05-14 11:02:36 CST; 5s ago
Docs: https://docs.docker.com
Process: 6732 ExecStart=/usr/bin/dockerd (code=exited, status=1/FAILURE)
Main PID: 6732 (code=exited, status=1/FAILURE)
5月 14 11:02:36 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine.
5月 14 11:02:36 localhost.localdomain systemd[1]: Unit docker.service entered failed state.
5月 14 11:02:36 localhost.localdomain systemd[1]: docker.service failed.
5月 14 11:02:36 localhost.localdomain systemd[1]: docker.service holdoff time over, scheduling restart.
5月 14 11:02:36 localhost.localdomain systemd[1]: Stopped Docker Application Container Engine.
5月 14 11:02:36 localhost.localdomain systemd[1]: start request repeated too quickly for docker.service
5月 14 11:02:36 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine.
5月 14 11:02:36 localhost.localdomain systemd[1]: Unit docker.service entered failed state.
5月 14 11:02:36 localhost.localdomain systemd[1]: docker.service failed.