Linux server forgets mysql password (change password)

1. End the currently running mysql process.

service mysql stop 

2. Run in mysql safe mode and skip permission verification.  

/www/server/mysql/bin/mysqld_safe --skip-grant-tables &

3. Reopen a terminal window and log in to mysql as root.

Enter: mysql -u root -p command and press Enter. When you need to enter a password, just press the enter key to log in to the database without a password.

4. Change password

mysql> update user set password=password('password') where user='root';

If the following error occurs:

ERROR 1054 (42S22): Unknown column 'password' in 'field list'

The reason is that there is no password field in the mysql database. The password field can be changed to authentication_string.

update user set authentication_string=PASSWORD('password') where Use
r='root';

5. Reload the system permission table

mysql> flush privileges;

6. Close the safe mode operation (close the terminal window just running in safe mode) 

service mysql stop

7. Start the database

service mysql start