导航

  在安装好的MySQL服务器上,配置了环境变量之后,发现用mysql无法登录,报如题的错误,实在没有办法,决定用安全模式对root用户修改密码:

  首先关闭正在运行的MySQL;

  在一个终端窗口运行命令:mysqld_safe --user=mysql --skip-grant-tables --skip-networking&

[root@MySQL ~]# mysqld_safe --user=mysql --skip-grant-tables --skip-networking&

  运行之后新打开一个终端窗口:

[root@MySQL ~]# mysql -u root mysql
mysql> update mysql.user set authentication_string=password('mysql') where user = 'root'; Query OK, 1 row affected, 1 warning (0.02 sec) Rows matched: 1 Changed: 1 Warnings: 1 mysql> flush privileges; Query OK, 0 rows affected (0.00 sec) mysql> exit Bye

  以上是5.7版本的修改密码方式,在5.7中存储密码的字段不再是password了,变成了authentication_string,在5.7之前采用以下命令:

mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';

  修改之后登陆成功:

[root@MySQL ~]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.9-log MySQL Community Server (GPL)

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