'用户'root'@'localhost'的访问被拒绝（使用密码：NO）'

我正在尝试设置 root 用户的密码，但出现以下错误，知道吗？

+----------------------------------------------------------------------------------------------------------------------------------------+
| Grants for root@localhost                                                                                                              |
+----------------------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY PASSWORD '*436576511F70A4E3B305E1AB8E209851945D8687' WITH GRANT OPTION |
+----------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)


mysql> exit
Bye
root@tirengarfio:/var/www/rs2# mysqladmin -u root password foo,
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: NO)'

$ mysqladmin -u root -p password
Enter password: 
New password: 
Confirm new password:

password是按字面意思输入。这是一个命令。你不必替代password使用您的实际密码。