how to reset mysql root password

Problem :

1. ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
Solution : Rest root password

 

• sudo dpkg-reconfigure mysql-server-5.5

             This will change the root password.

2.  ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)

Solution :  ps ax | grep mysql
                 sudo service mysql start
                 mysql start/running, process 7226