1、查看防火墙状态
firewall-cmd --state
firewall-cmd --list-all
2、防火墙启动关闭
systemctl start firewalld
systemctl stop firewalld
systemctl restart firewalld
3、添加端口
firewall-cmd --permanent --add-port=6379/tcp
firewall-cmd --reload
4、加入开机启动
systemctl enable firewalld
