docker启动报错

首先关闭防火墙：systemctl stop firewalld

然后执行下面的命令就可以了

root@lmtest-u18:~# systemctl unmask docker.service
root@lmtest-u18:~# systemctl unmask docker.socket
root@lmtest-u18:~# systemctl start docker.service
root@lmtest-u18:~# systemctl status docker