service mysql stop

bin/mysqld_safe –skip-grant-tables &

bin/mysqld_safe –skip-grant-tables –skip-networking &

bin/mysql -uroot

update mysql.user set authentication_string=password(‘123456’) where user=’root’ and Host = ‘localhost’;

flush privileges;

service mysql start

bin/mysql -uroot -p123456

set password for ‘root’@’localhost’=password(‘123456’);

flush privileges;