You don’t remember your mysql password, be quiet, this is how you can access your mysql server without password and query for a new root password.
Step 1 : Stop mysql service
/etc/init.d/mysql stop
Step 2: Start to MySQL server without password:
mysqld_safe --skip-grant-tables &
Step 3: Connect to mysql server using mysql client:
mysql -u root
Step 4: Setup new MySQL root user password
mysql> use mysql; mysql> update user set password=PASSWORD("NEW-ROOT-PASSWORD") where User='root'; mysql> flush privileges; mysql> quit
Step 5: Stop MySQL Server:
/etc/init.d/mysql stop
Step 6: Start MySQL server and test it
/etc/init.d/mysql start mysql -u root -p