解决docker 容器内访问宿主机“No route to host”的问题

首先确认是否已经关闭防火墙； 请顺序运行以下命令：

nmcli connection modify docker0 connection.zone trusted

systemctl stop NetworkManager.service

firewall-cmd --permanent --zone=trusted --change-interface=docker0

systemctl start NetworkManager.service

nmcli connection modify docker0 connection.zone trusted

systemctl restart docker.service