MySql Error 1698(28000)问题的解决方法

时间:2021-11-14 08:32:13

一,问题描述:

MysqlERROR1698(28000)解决,新装了mysql-server-5.7,登录为这一问题,普通用户不能进mysql,只有root用户才能进,并且不需要任何密码。

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~$ mysql -u root -p
Enter password:
ERROR 1698 (28000): Access denied for user 'root'@'localhost'

二,解决步骤:

停止mysql服务

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~$ sudo service mysql stop

以安全模式启动MySQL

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~$ sudo mysqld_safe --skip-grant-tables &

MySQL启动之后就可以不用密码登陆了

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~$ mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.10 MySQL Community Server (GPL)

查看一下user表,错误的起因就是在这里, root的plugin被修改成了auth_socket,用密码登陆的plugin应该是mysql_native_password。

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mysql> select user, plugin from mysql.user;
+-----------+-----------------------+
| user   | plugin        |
+-----------+-----------------------+
| root   | auth_socket      |
| mysql.sys | mysql_native_password |
| dev    | mysql_native_password |
+-----------+-----------------------+
<strong>3</strong> rows in set (<strong>0.01</strong> sec)

关于auth_socket,在官方有说明: https://dev.mysql.com/doc/mysql-security-excerpt/5.5/en/socket-authentication-plugin.html ,反正现在暂时不用它, 那就把这里改了。

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mysql> update mysql.user set authentication_string=PASSWORD('newPwd'), plugin='mysql_native_password' where user='root';
Query OK, <strong>1</strong> row affected, <strong>1</strong> warning (<strong>0.00</strong> sec)
Rows matched: <strong>1</strong> Changed: <strong>1</strong> Warnings: <strong>1</strong>
mysql> flush privileges;
Query OK, <strong>0</strong> rows affected (<strong>0.00</strong> sec)

重启服务,问题就解决了

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~$ sudo service mysql stop
...
 * MySQL Community Server 5.7.10 is stopped
~$ sudo service mysql start
..
 * MySQL Community Server 5.7.10 is started
~$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.10 MySQL Community Server (GPL)

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