Turn off --skip-grant-tables in MySQL
Login to mysql
mysql -u root -p
Then execute:
FLUSH PRIVILEGES;
http://dev.mysql.com/doc/refman/5.0/en/server-options.html http://dev.mysql.com/doc/refman/5.0/en/mysqladmin.html
Just stop and restart MySQL normally.
You can make this done by using below steps.
[root@backups1 mysql5.7]# bin/mysqld_safe --skip-grant-tables --user=mysql
connect to your mysql without password.
mysql> flush privileges;
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '';
mysql> flush privileges;
switch to normal mode of mysql then connect without password.
This surely will work for you.