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TencentDB for MySQL allows you to set the password complexity to improve the strength of database access passwords and optimize the database security.

Prerequisites

• The database version is:

• MySQL 5.6, with minor version 20201231 or later.

• MySQL 5.7, with minor version 20201231 or later.

• MySQL 8.0, with minor version 20201230 or later.

• The instance must be on a two-node/three-node architecture.

Use Limits

For any password set during account creation or reset in the TencentDB for MySQL console, it must at least meet the following initial account password requirements:

• It can contain 8 to 64 characters
• It must contain at least three of the following character types: uppercase letters, lowercase letters, digits, and special symbols.
• Special characters are _+-&=!@#$%^*().

Enabling Password Complexity

Note：

After the password complexity feature is enabled, any password set during account creation or reset must follow the password complexity policy.

Enabling when creating an instance on the purchase page

1. Log in to the TencentDB for MySQL purchase page.
2. Configure parameters as needed. Select Enable after the Password Complexity parameter.
   
3. Set the following parameters.

   Parameter	Description
   Min Number of Uppercase or Lowercase Letters	You can select a number between 1 (default value) and 16.
   Min Number of Digitals	You can select a number between 1 (default value) and 16.
   Min Number of Symbols	You can select a number between 1 (default value) and 16.
   Min Number of Password Characters	You can select a number between 8 (default value) and 64. The minimum value must be greater than the sum of the above three parameters.

Enabling for existing instances in the console

1. Log in to the TencentDB for MySQL console. In the instance list, click an instance ID or Manage in the Operation column to enter the instance management page.
2. On the instance management page, select Database Management> Account Management and click Password Complexity (disabled by default).
   
3. Select Enable in the Password Complexity pop-up window, set the following parameters, and click OK.
   

   Parameter	Description
   Min Number of Uppercase or Lowercase Letters	You can select a number between 1 (default value) and 16.
   Min Number of Digitals	You can select a number between 1 (default value) and 16.
   Min Number of Symbols	You can select a number between 1 (default value) and 16.
   Min Number of Password Characters	You can select a number between 8 (default value) and 64. The minimum value must be greater than the sum of the above three parameters.

Disabling Password Complexity

1. Log in to the TencentDB for MySQL console. In the instance list, click an instance ID or Manage in the Operation column to enter the instance management page.
2. On the instance management page, select Database Management> Account Management and click Password Complexity.
   
3. Select Disable in the Password Complexity pop-up window and click OK.
   

Relevant Documentation

• Creating Account
• Resetting Password