如何设置Mysql root权限
2016-01-14 20:35
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当root权限失去某些权限后,如何恢复这个权限?
1. 可以进入数据库,但无update权限:
操作过程:在WINDOWS的DOS窗口下,进入MYSQL安装目录的BIN目录,
运行mysqld-nt --skip-grant-tables,当前窗口将会停止。(必须先关闭mysql ,net start mysql)
另外打开一个命令行窗口,执行mysql 如果提示没有这个命令,先进入MYSQL的安装位置下BIN目录再运行mysql
>use mysql
>update user set Update_priv ='Y' where user = 'root';
如果root 没有所有数据的权限
更新的MYSQL.USER表的所有字段中为N的为Y就可以了。
update user set Select_priv ='Y' where user = 'root';
update user set Insert_priv ='Y' where user = 'root';
update user set Update_priv ='Y' where user = 'root';
update user set Delete_priv ='Y' where user = 'root';
update user set Create_priv ='Y' where user = 'root';
update user set Drop_priv ='Y' where user = 'root';
update user set Reload_priv ='Y' where user = 'root';
update user set Shutdown_priv ='Y' where user = 'root';
update user set Process_priv ='Y' where user = 'root';
update user set File_priv ='Y' where user = 'root';
update user set Grant_priv ='Y' where user = 'root';
update user set References_priv ='Y' where user = 'root';
update user set Index_priv ='Y' where user = 'root';
update user set Alter_priv ='Y' where user = 'root';
update user set Show_db_priv ='Y' where user = 'root';
update user set Super_priv ='Y' where user = 'root';
update user set Create_tmp_table_priv ='Y' where user = 'root';
update user set Lock_tables_priv ='Y' where user = 'root';
update user set Execute_priv ='Y' where user = 'root';
update user set Repl_slave_priv ='Y' where user = 'root';
update user set Repl_client_priv ='Y' where user = 'root';
update user set Create_view_priv ='Y' where user = 'root';
update user set Show_view_priv ='Y' where user = 'root';
update user set Create_routine_priv ='Y' where user = 'root';
update user set Alter_routine_priv ='Y' where user = 'root';
update user set Create_user_priv ='Y' where user = 'root';
update user set Event_priv ='Y' where user = 'root';
update user set Trigger_priv ='Y' where user = 'root';
权限问题最后要保证“mysql.user”表中 host为“localhost”和“%”都有root的所有权限。
2. 忘记密码,无法连接数据库:
解决办法:
同样的,利用命令行,跳过mysql的服务认证
>cd ../bin //进入Mysql路径下的bin目录中
>mysqld-nt --skip-grant-tables //让mysql服务跳过认证运行,保持这个窗口不关闭
(|>bin/safe_mysqld --skip-grant-tables & //Linux下)
>mysql -uroot //另打开一个shell,执行Mysql
>use mysql //切换数据库为mysql
>update user set password=password("new_pass") where user="root"; //更新用户密码
>flush privileges; //更新Mysql权限表
>exit //退出Mysql
>exit //关闭shell
1. 可以进入数据库,但无update权限:
操作过程:在WINDOWS的DOS窗口下,进入MYSQL安装目录的BIN目录,
运行mysqld-nt --skip-grant-tables,当前窗口将会停止。(必须先关闭mysql ,net start mysql)
另外打开一个命令行窗口,执行mysql 如果提示没有这个命令,先进入MYSQL的安装位置下BIN目录再运行mysql
>use mysql
>update user set Update_priv ='Y' where user = 'root';
如果root 没有所有数据的权限
更新的MYSQL.USER表的所有字段中为N的为Y就可以了。
update user set Select_priv ='Y' where user = 'root';
update user set Insert_priv ='Y' where user = 'root';
update user set Update_priv ='Y' where user = 'root';
update user set Delete_priv ='Y' where user = 'root';
update user set Create_priv ='Y' where user = 'root';
update user set Drop_priv ='Y' where user = 'root';
update user set Reload_priv ='Y' where user = 'root';
update user set Shutdown_priv ='Y' where user = 'root';
update user set Process_priv ='Y' where user = 'root';
update user set File_priv ='Y' where user = 'root';
update user set Grant_priv ='Y' where user = 'root';
update user set References_priv ='Y' where user = 'root';
update user set Index_priv ='Y' where user = 'root';
update user set Alter_priv ='Y' where user = 'root';
update user set Show_db_priv ='Y' where user = 'root';
update user set Super_priv ='Y' where user = 'root';
update user set Create_tmp_table_priv ='Y' where user = 'root';
update user set Lock_tables_priv ='Y' where user = 'root';
update user set Execute_priv ='Y' where user = 'root';
update user set Repl_slave_priv ='Y' where user = 'root';
update user set Repl_client_priv ='Y' where user = 'root';
update user set Create_view_priv ='Y' where user = 'root';
update user set Show_view_priv ='Y' where user = 'root';
update user set Create_routine_priv ='Y' where user = 'root';
update user set Alter_routine_priv ='Y' where user = 'root';
update user set Create_user_priv ='Y' where user = 'root';
update user set Event_priv ='Y' where user = 'root';
update user set Trigger_priv ='Y' where user = 'root';
权限问题最后要保证“mysql.user”表中 host为“localhost”和“%”都有root的所有权限。
<span style="color: rgb(255, 0, 0);"> </span>host列是指定登录的ip,比如说 user=root host=192.168.1.1 ,这里的意思就是说,root用户只能通过 192.168.1.1的客户端去访问,而%则是个通配符, 如果host=192.168.1.%,那么就表示 只要是 ip为host=192.168.1.前缀的客户端都可以连接,那么host=%的话则表示所有ip都有权去连接,这也就是为什么在开启远程连接的时候,大部分人都直接把host改成%的缘故,因为省事
2. 忘记密码,无法连接数据库:
解决办法:
同样的,利用命令行,跳过mysql的服务认证
>cd ../bin //进入Mysql路径下的bin目录中
>mysqld-nt --skip-grant-tables //让mysql服务跳过认证运行,保持这个窗口不关闭
(|>bin/safe_mysqld --skip-grant-tables & //Linux下)
>mysql -uroot //另打开一个shell,执行Mysql
>use mysql //切换数据库为mysql
>update user set password=password("new_pass") where user="root"; //更新用户密码
>flush privileges; //更新Mysql权限表
>exit //退出Mysql
>exit //关闭shell
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