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默认是不能用客户端远程连接的，阿里云提供的help.docx里面做了设置说明，mysql密码默认存放在/alidata/account.log
首先登录： mysql -u root -h localhost -p
use mysql #打开mysql数据库
#将host设置为%表示任何ip都能连接mysql，当然您也可以将host指定为某个ip
update user set host='%' where user='root' and host='localhost';
flush privileges; #刷新权限表，使配置生效
然后我们就能远程连接我们的mysql了。
Mysql数据库的默认配置文件my.cnf（linux下）中的bind-address默认为127.0.0.1，所以就算你创建了可以 remote访问的用户，你也不能使用mysql -h命令进行访问，若访问就会出现上出问题，因为此时Mysql只接受localhost，所以需要把bind-address屏蔽掉。
my.cnf一般在/etc/mysql下面，如果不在使用locate my.cnf查找，修改前的my.cnf配置文件为：
修改前的my.cnf配置文件代码
#
# 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
#
# 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
我们需要做的就是屏蔽这个bind-address代码，屏蔽后代码为：
屏蔽后my.cnf配置文件代码
#
# 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
#
# 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
现在你就可以用mysql -h命令进行你想做的操作了
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