1、修改/usr/lib/systemd/system/docker.service
在[Service]的ExexStart后面追加-H unix:///var/run/docker.sock -H 0.0.0.0:5555
2、重新启动docker daemon和docker
[root@cxl1 docker]# systemctl daemon-reload
[root@cxl1 docker]# systemctl restart docker
3、查看端口是否暴露
netstat -tnlp | grep 2375