CentOS7 firewall開啓，開放端口操做

防火牆開機啓動

systemctl enable firewalld.service

查看防火牆狀態

firewall-cmd --state

開啓防火牆

systemctl start firewalld.service

開放8080，3306，6379端口

firewall-cmd --zone=public --add-port=8080/tcp --permanent
firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --zone=public --add-port=6379/tcp --permanent

重啓

systemctl restart firewalld.service

從新加載載

firewall-cmd --reload