~~~~~~~~~~~~
开放某个端口
~~~~~~~~~~~~
firewall-cmd --zone=public --add-port=6669/tcp --permanent
firewall-cmd --reload
systemctl start firewalld
systemctl stop firewalld
~~~~~~~~~~~~
开放某个端口
~~~~~~~~~~~~
firewall-cmd --zone=public --add-port=6669/tcp --permanent
firewall-cmd --reload
systemctl start firewalld
systemctl stop firewalld