mysql password change

MySQL is a very popular database management system that is widely used in various website and application development. Protecting the security of user data is an important aspect of the MySQL database management system, and the password security protection mechanism is even more crucial.

In practical applications, MySQL database administrators need to change the database password regularly to ensure the security of the database. This article will introduce you how to change the MySQL database password.

1. Log in to the MySQL database

Before changing the MySQL database password, you first need to log in to the MySQL database. You may need to choose different login methods based on actual conditions.

1.1 Log in using the command line

Enter the following command in the command line:

mysql -u 用户名 -p

Where the username is the username of the MySQL database you want to use, -p means enter password. From the command line prompt, enter the password for the MySQL database to log in to the database.

1.2 Log in using MySQL Workbench

When using MySQL Workbench to connect to a MySQL database, you can select "Server Manager" in the "Management" toolbar. In the pop-up login window, enter the user name and password of the MySQL database, and then click the "Connect" button to log in to the database.

2. Change MySQL database password

After successfully logging in to the MySQL database, we need to perform the following steps to change the password:

2.1 Select to change the password User

First, we need to select the user whose password is going to be changed. Use the following command to list all users in the current system:

SELECT USER,HOST FROM mysql.user;

Where USER represents the user name in the MySQL database, and HOST represents the host name. This will display a list of all users in the MySQL database.

2.2 Change user password

To change the password of a user in the MySQL database, use the following command:

SET PASSWORD FOR 用户名@主机名 = PASSWORD('新密码');

where username is the user whose password you want to change, The hostname is the hostname of the user. newpassword is the new password to change to.

For example, the following command will change the password on the host where the user named "test" is located:

SET PASSWORD FOR 'test'@'localhost' = PASSWORD('newpassword');

After executing this command, you will see the MySQL database reply "Query OK" means The old password has been successfully changed to the new password.

3. Verify the changed password

To ensure that the MySQL database password has been changed successfully, you can close the MySQL database and restart it, and try to log in with the new password.

If you used the command line to log in to the MySQL database, use the following command to exit:

quit;

Next, use the command line again to log in to the MySQL database and enter the following command to authenticate:

mysql -u 用户名 -p

When prompted for a password, enter the new password you just set. If you successfully log in to the database, it means that the MySQL database password has been changed successfully.

If you are using MySQL Workbench to connect to a MySQL database, close MySQL Workbench and reopen it. Enter your username and new password and click the "Connect" button. If you successfully log in to the database, it means that the MySQL database password has been changed successfully.

Summary

MySQL database password protection is the key to ensuring data security and must be handled with care. In practical applications, we often need to change the database password regularly to ensure the security of the database.

This article describes how to change the MySQL database password. If you follow these steps correctly and confirm the password change after verification, you can keep your MySQL database secure.

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