MySQL 远程连接问题 (Linux Server)

Mysql Workbench 连接Ubuntu上的Mysql时报如下错误：

原因：查看  /etc/mysql/mysql.conf.d/mysqld.cnf

#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address            = 127.0.0.1

默认只支持本地访问。

修改为：

#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address            = 0.0.0.0

然后重启Mysql :

service mysql restart

再重新连接报如下错误：

查找原因：

显示只能localhost 访问。

解决方法：修改授权远程访问

修改：

mysql> update user set host="%" where user="root";

或新增：

grant all privileges on *.* to 'root'@'%'  identified by 'admin123' with grant option;
flush privileges;

%代表通配，也可换成IP地址。