1.首先停止MySQL服务：service mysqld stop
2.加参数启动mysql：/usr/bin/mysqld_safe --skip-grant-tables &
然后就可以无任何限制的访问mysql了
3.root用户登陆系统：mysql -u root -p mysql
4.切换数据库：use mysql
5.显示所有的表：show tables;
这里就可以访问表了
6.查看user表中root用户的localhost权限：select * from user where user='root' and host='localhost'
7.在显示的列表中显示：root用户的localhost的权限都是'N',表示root用户本地登陆不具有权限
8.修改root用户的localhost权限：
update user set `Select_priv` = 'Y', `Insert_priv` = 'Y', `Update_priv` = 'Y', `Delete_priv` = 'Y', `Create_priv` = 'Y', `Drop_priv` = 'Y', `Reload_priv` = 'Y', `Shutdown_priv` = 'Y', `Process_priv` = 'Y', `File_priv` = 'Y', `Grant_priv` = 'Y', `References_priv` = 'Y', `Index_priv` = 'Y', `Alter_priv` = 'Y', `Show_db_priv` = 'Y', `Super_priv` = 'Y', `Create_tmp_table_priv` = 'Y', `Lock_tables_priv` = 'Y', `Execute_priv` = 'Y', `Repl_slave_priv` = 'Y', `Repl_client_priv` = 'Y', `Create_view_priv` = 'Y', `Show_view_priv` = 'Y', `Create_routine_priv` = 'Y', `Alter_routine_priv` = 'Y', `Create_user_priv` = 'Y', `Event_priv` = 'Y', `Trigger_priv` = 'Y', `Create_tablespace_priv` = 'Y' where user='root' and host='localhost' |
-------在输入命令进行操作时报错，把 `Create_tablespace_priv` = 'Y'去掉解决
9.更新一下：flush privileges;
10.然后重新启动下mysql，可以解决问题了
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