How to Change MySQL User Password

In this guide, I will walk you through the process of using the ALTER USER statement to modify MySQL user passwords.

Step 1: Accessing the MySQL Command Line

Before we proceed with changing the password, make sure you have access to the MySQL command line interface. You can do this by opening your terminal or command prompt and logging in to MySQL with the following command:

mysql -u your_username -p

Replace your_username with the actual username you want to modify. You will be prompted to enter the password for this user.

Step 2: Changing the Password

To change the password for a specific MySQL user, use the ALTER USER statement along with the IDENTIFIED BY clause. For example, let's say we want to change the password for the user dbadmin to newpasswd. Here's the SQL command you would use:

ALTER USER dbadmin@'%' IDENTIFIED BY 'newpasswd';

This command updates the password for the dbadmin user, and they will now need to use newpasswd to log in.

Step 3: Verifying the Change

After executing the above SQL statement to modify the password, it's essential to verify that the change took effect successfully. Attempt to log in using the new password (newpasswd) to ensure everything is working as expected.

Resetting the Password for the root Account

If you want to reset the password for the root account, the process is a bit different due to its special privileges. To reset the root password, you'll need to stop and restart the MySQL database server in a way that bypasses the authentication tables. This ensures you can set a new password without a password prompt:

  1. Stop the MySQL server:
sudo service mysql stop
  1. Restart MySQL with the --skip-grant-tables option to skip the authentication:
sudo mysqld_safe --skip-grant-tables &
  1. Connect to MySQL as the root user:
mysql -u root
  1. Set a new password using the following SQL command:
ALTER USER root@'localhost' IDENTIFIED BY 'new_root_password';

Replace 'new_root_password' with your desired new password.

  1. Flush the privileges to update the changes:
FLUSH PRIVILEGES;
  1. Restart the MySQL server normally:
sudo service mysql restart

Your root account should now have the new password you specified.

Remember, keeping your MySQL user passwords secure is essential for protecting your data from unauthorized access. Make sure to use strong, unique passwords and change them regularly to maintain a robust database security posture.

2022-11-21 05:22:36 | NOTE | 0 Comments
 

 

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