ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

 Enter password:

 ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

解决办法：

 # mysqladmin -uroot -p password 'newpassword'

 Enter password:

 mysqladmin: connect to server at 'localhost' failed

 error: 'Access denied for user 'root'@'localhost' (using password: YES)'

mysql -u root -p

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