CentOS MySQL Error information processing

Mysql_secure_installation

Prompt error:
Enter current password to root (enter for none):
ERROR 1045 (28000): Access denied for user ' root ' @ ' localhost ' (using Password:no)
Enter current password to root (enter for none):
ERROR 1045 (28000): Access denied for user ' root ' @ ' localhost ' (using Password:yes)

解决方法：
#1.停止mysql数据库

/etc/init.d/mysqldstop

#2.执行如下命令

mysqld_safe --user=mysql --skip-grant-tables --skip-networking &

#3.使用root登录mysql数据库

mysql -u root mysql

#4.更新root密码

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

#最新版MySQL请采用如下SQL：

mysql> UPDATE user SET authentication_string=PASSWORD(‘newpassword‘) where USER=‘root‘;

#5.刷新权限

mysql> FLUSH PRIVILEGES;

#6.退出mysql

mysql> quit

#7.重启mysql

/etc/init.d/mysqldrestart

#8.使用root用户重新登录mysql

mysql -uroot -p

Enter password:
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CentOS MySQL Error information processing