在远程连接mysql的时候应该都碰到过,root用户无法远程连接mysql,只可以本地连,对外拒绝连接。
需要建立一个允许远程登录的数据库帐户,这样才可以进行在远程操作数据库。方法如下:默认情况下MYSQL数据库的系统数据库mysql系统表user内用户权限只提供localhost本机登陆;需要更改权限才能实现远程连接MYSQL数据库。可以通过以下方式来确认:root#mysql -h localhost -uroot -pEnter password: ******Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 4 to server version: 4.0.20a-debugType ‘help;’ or ‘\h’ for help. Type ‘\c’ to clear the buffer.mysql> use mysql; (此DB存放MySQL的各种配置信息)Database changedmysql> select host,user from user; (查看用户的权限情况)mysql> select host, user, password from user;+-----------+------+-------------------------------------------+| host | user | password |+-----------+------+-------------------------------------------+| localhost | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 || 127.0.0.1 | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 || localhost | | |+-----------+------+-------------------------------------------+4 rows in set (0.01 sec)由此可以看出,只能以localhost的主机方式访问。解决方法:mysql> Grant all privileges on *.* to 'root'@'%' identified by '123456' with grant option;(%表示是所有的外部机器,如果指定某一台机,就将%改为相应的机器名;‘root’则是指要使用的用户名,)mysql> flush privileges; (运行此句才生效,或者重启MySQL)Query OK, 0 rows affected (0.03 sec)再次查看。。mysql> select host, user, password from user;+-----------+------+-------------------------------------------+| host | user | password |+-----------+------+-------------------------------------------+| localhost | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 || 127.0.0.1 | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 || localhost | | || % | root | *4ACFE3202A5FF5CF467898FC58AAB1D615029441 |+-----------+------+-------------------------------------------+4 rows in set (0.01 sec)可以看出已经添加了一个新的用户退出,试试效果....现在可以成功登录了..