mysql SELECT/UPDATE command denied to user 'root'@'localhost

时间：2020-03-31

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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mysql SELECT/UPDATE command denied to user 'root'@'localhost

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