ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
Posted on 2016-12-20 22:18 张鑫的园子 阅读(13952) 评论(0) 编辑 收藏 举报在安装好的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) Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>