Password policies in MySQL

Introduction

Password policies help keep user accounts safe by setting rules for creating strong passwords.

When you want to make sure users create passwords that are hard to guess.

When you need to require users to change their passwords regularly.

When you want to prevent users from reusing old passwords.

When you want to enforce minimum password length and complexity.

When you want to improve overall security of your database system.

Syntax

MySQL

SHOW VARIABLES LIKE 'validate_password%';

-- To set password policy variables:
SET GLOBAL validate_password.length = 8;
SET GLOBAL validate_password.policy = 1;
SET GLOBAL validate_password.mixed_case_count = 1;
SET GLOBAL validate_password.number_count = 1;
SET GLOBAL validate_password.special_char_count = 1;

These commands check and set password policy rules in MySQL.

You need proper privileges to change global variables.

Examples

Shows current password policy settings.

MySQL

SHOW VARIABLES LIKE 'validate_password%';

Sets minimum password length to 10 characters.

MySQL

SET GLOBAL validate_password.length = 10;

Sets password policy to 'STRONG' requiring mixed characters.

MySQL

SET GLOBAL validate_password.policy = 2;

Requires at least 2 numeric characters in passwords.

MySQL

SET GLOBAL validate_password.number_count = 2;

Sample Program

This query shows the current password policy settings in MySQL.

MySQL

SHOW VARIABLES LIKE 'validate_password%';

Important Notes

Password policies help protect your database from unauthorized access.

Changing password policies affects new passwords, not existing ones.

You can adjust policies to balance security and user convenience.

Summary

Password policies set rules for creating strong passwords.

MySQL uses variables starting with 'validate_password' to control policies.

You can view and change these settings with SHOW VARIABLES and SET GLOBAL commands.