MySQL Monitoring MySQL Privilege Best Practices Privilege control is primarily for security reasons, so follow these best practices: Grant only the minimum privileges needed to prevent users from doing harm. For example, if a user only needs to query, just grant SELECT privileges, not UPDATE, INSERT, or DELETE. Restrict the login host when creating users, typically to a specific IP or internal network IP range. Delete users without passwords after initializing the database. The installation automatically creates some users with no passwords by default. Set passwords that meet complexity requirements for each user. Periodically clean up unnecessary users. Revoke privileges or delete users. Example: