[root@localhost ~]# docker images Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? [root@localhost ~]# service docker restart Redirecting to /bin/systemctl restart 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. [root@localhost ~]# systemctl status docker.service ● docker.service - Docker Application Container Engine Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled) Active: failed (Result: start-limit) since Sun 2021-05-30 02:08:49 EDT; 48s ago Docs: https://docs.docker.com Process: 21471 ExecStart=/usr/bin/dockerd (code=exited, status=1/FAILURE) Main PID: 21471 (code=exited, status=1/FAILURE) May 30 02:08:49 localhost.localdomain systemd[1]: docker.service failed. May 30 02:08:49 localhost.localdomain systemd[1]: docker.service holdoff time over, scheduling restart. May 30 02:08:49 localhost.localdomain systemd[1]: Stopped Docker Application Container Engine. May 30 02:08:49 localhost.localdomain systemd[1]: start request repeated too quickly for docker.service May 30 02:08:49 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine. May 30 02:08:49 localhost.localdomain systemd[1]: Unit docker.service entered failed state. May 30 02:08:49 localhost.localdomain systemd[1]: docker.service failed. May 30 02:08:55 localhost.localdomain systemd[1]: start request repeated too quickly for docker.service May 30 02:08:55 localhost.localdomain systemd[1]: Failed to start Docker Application Container Engine. May 30 02:08:55 localhost.localdomain systemd[1]: docker.service failed.
重启系统后，可以正常启动了，why？？