change / reset root password in mysql

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Resetting the Root Password: Generic Instructions

The preceding sections provide password-resetting instructions specifically for Windows and Unix and Unix-like systems. Alternatively, on any platform, you can reset the password using the mysql client (but this approach is less secure):

  1. Stop the MySQL server if necessary, then restart it with the --skip-grant-tables option. This enables anyone to connect without a password and with all privileges, and disables account-management statements such as ALTER USER and SET PASSWORD. Because this is insecure, if the server is started with the --skip-grant-tables option, it also disables remote connections by enabling skip_networking.
  2. Connect to the MySQL server using the mysql client; no password is necessary because the server was started with --skip-grant-tables:

$> mysql

In the mysql client, tell the server to reload the grant tables so that account-management statements work:

mysql> FLUSH PRIVILEGES;

Then change the 'root'@'localhost' account password. Replace the password with the password that you want to use. To change the password for a root account with a different host name part, modify the instructions to use that host name.

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass';

You should now be able to connect to the MySQL server as root using the new password. Stop the server and restart it normally (without the --skip-grant-tables option and without enabling the skip_networking system variable).

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