Linux普通用户无法登录mysql——ERROR 1698 (28000): Access denied for user 'root'@'localhost'

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现场还原：用root用户在Linux上安装mysql后，用Linux的root用户可以登录mysql，但普通用户无法登录，提示错误：ERROR 1698 (28000): Access denied for user 'root'@'localhost'

一、mysql用root登录mysql

选择以mysql命名的数据库，用以下命令查看user表：

select host,user,plugin from user;

结果如下：

+-----------+---------+-----------------------+
| host      | user    | plugin                |
+-----------+---------+-----------------------+
| localhost | root    | unix_socket           |
+-----------+---------+-----------------------+

二、修改plugin属性为mysql_native_password

update user set authentication_string=PASSWORD('000000'), plugin='mysql_native_password' where user='root';

结果如下：

+-----------+---------+-----------------------+
| host      | user    | plugin                |
+-----------+---------+-----------------------+
| localhost | root    | mysql_native_password |
+-----------+---------+-----------------------+

三、重启mysql服务

service mysql stop

service mysql start

四、在普通用户下用root账号登录成功！