Today, after switching the server's IP from dhcp to static, the service was abnormal, and the container was restarted and found that there was a network error. Therefore, I thought that 
this problem should be caused by the abnormality when trying to switch the IP . You need to add some configuration, and then Restart the network
#添加配置
cat >> /usr/lib/sysctl.d/00-system.conf <<EOF
net.ipv4.ip_forward=1
EOF
#重启network服务
systemctl restart network