Navicat远程连接服务器上的Mysql数据库

开通Mysql授权

MariaDB [(none)]>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;
 
MariaDB [(none)]>FLUSH PRIVILEGES;

root用户使用密码root从任何主机连接到mysql服务器

查看是否授权成功

MariaDB [(none)]> select host,user from mysql.user;
+-----------+------+
| host      | user |
+-----------+------+
| %         | root |
| 127.0.0.1 | root |
| ::1       | root |
| localhost | root |
+-----------+------+
4 rows in set (0.00 sec)

看到%|root这一行，说明授权成功

开放防火墙端口

编辑防火墙配置文件

vi /etc/sysconfig/iptables

开放ssh端口

#ssh port 
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT

开放数据库的3306端口

#mysql port
-A INPUT -p tcp -m tcp --dport 3306 -j ACCEPT

Navicat远程连接