Access Denied for user 'root'@'localhost' （Using password：NO）解决方法

• Error 1045（28000） Access Denied for user 'root'@'localhost' （Using password：NO）解决方法：

   
  # /etc/init.d/mysql stop (或killall mysqld)
  # mysqld_safe --user=mysql --skip-grant-tables --skip-networking &
  # mysql -u root mysql
  mysql> UPDATE user SET Password=PASSWORD('newpassword') where USER='root';
  mysql> FLUSH PRIVILEGES;
  mysql> quit

  # /etc/init.d/mysql restart
  # mysql -uroot -p
  Enter password: <输入新设的密码newpassword>

  重启服务器