解决FirewallD is not running问题
centos7 1.查看firewalld状态:systemctl status firewalld,如果是dead状态,即防火墙未开启。 2.开启防火墙systemctl start firewalld 3.确认firewalld状态:systemctl status firewalld 4.开放默认端口号 3306,出现success表示成功 firewall-cmd --permanent --zone=public --add-port=3306/tcp 关闭防火墙:systemctl stop firewalld
centos7
1.查看firewalld状态:systemctl status firewalld,如果是dead状态,即防火墙未开启。
2.开启防火墙systemctl start firewalld
3.确认firewalld状态:systemctl status firewalld
4.开放默认端口号 3306,出现success表示成功
firewall-cmd --permanent --zone=public --add-port=3306/tcp
关闭防火墙:systemctl stop firewalld
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