新装的mysql数据库设置密码时报错：
#mysqladmin -uroot -p password "newpassword"
Enter password:
mysqladmin:connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password:YES)'
解决方法：
# /etc/init.d/mysql stop
# 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>
方法：
mysql> insert into mysql.user (Host,User,Password) VALUES('%','system',PASSWORD('manager'));
mysql> flush privileges;