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MySQL ERROR 1698 (28000) 错误

之前MySQL服务端本机上使用密码登陆root账号是没有问题的,但是今天不知道是因为动了哪里,登陆失败并有这个错误代码:

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

  

解决步骤:

停止mysql服务

~$ sudo service mysql stop

 

以安全模式启动MySQL

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

 

MySQL启动之后就可以不用密码登陆了

~$ 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。

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

 

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。

复制代码
mysql> update mysql.user set authentication_string=PASSWORD('newPwd'), plugin='mysql_native_password' where user='root';
Query OK, 1 row affected, 1 warning (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 1

mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
复制代码

 

重启服务,问题就解决了

复制代码
~$ 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)
复制代码

 

    

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    ➩  如需转载请注明出处:凤明的博客 » https://victorfengming.github.io/#blog

    ➩  小编CSDN链接地址: 秋叶夏风的博客 » https://blog.csdn.net/qq_40223983

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