查看防火墙状态: 绿的running表示防火墙开启
systemctl status firewalld.service
执行关闭命令:
systemctl stop firewalld.service
执行开机禁用防火墙自启命令 :
systemctl disable firewalld.service
启动:
systemctl start firewalld.service
防火墙随系统开启启动 :
systemctl enable firewalld.service
开放3306端口
firewall-cmd --zone=public --add-port=3306/tcp --permanent
重启防火墙
firewall-cmd --reload
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