Reset root password
sudo /etc/init.d/mysqld stop
sudo /etc/init.d/mysqld status
sudo mysqld_safe --skip-grant-tables &
mysql -u root
use mysql;
update user set password=PASSWORD("mynewpassword") where User='root';
flush privileges;
exit
sudo /etc/init.d/mysqld stop
sudo /etc/init.d/mysqld status
sudo /etc/init.d/mysqld start
sudo /etc/init.d/mysqld status
https://support.rackspace.com/how-to/mysql-resetting-a-lost-mysql-root-password/