Reset a MySQL root password
So you've managed to misplace your root login for a MySQL database? Not to worry, the following procedure will guide you though resetting the root password on a MySQL database in 7 easy steps.
The MySQL root password is not the same as the system root password. If you have never set a root password for MySQL server, most likely it empty as MySQL does not require a password for database connections. However, it is HIGHLY recommended you set a password.
Login as root, then stop the MySQL server daemon.
Start the MySQL server without a password.
mysqld_safe --skip-grant-tables &
Connect to the MySQL server using the MySQL client.
mysql -u root
Set a new MySQL root user password by entering the following four commands. Be sure to change "NEW_ROOT_PASSWORD" to your desired password.
mysql> use mysql;
mysql> update user set password=PASSWORD("NEW_ROOT_PASSWORD") where User='root';
mysql> flush privileges;
Stop the MySQL server.
Now start the MySQL server.
Test to make sure your new MySQL root password works.
mysql -u root -p