How to secure Ubuntu MySQL database?

@alivia 

Securing a MySQL database on Ubuntu involves a variety of best practices and configurations. Here are some steps you can take to secure your MySQL database on Ubuntu:

1. Update MySQL Server and Ubuntu System: Always keep your MySQL server and Ubuntu system up to date with the latest security patches.
2. Use Strong Passwords: Set strong passwords for your MySQL users and ensure that they are changed periodically.
3. Limit Access: Limit access to your MySQL database by allowing only authorized users to connect to the database. Use firewall rules to restrict access to the database server.
4. Use SSL: Use SSL (Secure Sockets Layer) encryption to secure data transmission between the MySQL server and client applications.
5. Disable Remote Access: If your MySQL server is running on a local network, disable remote access to the database to prevent unauthorized access from outside the network.
6. Configure MySQL Firewall Rules: Configure firewall rules to allow only specific IP addresses or ranges to access the MySQL server.
7. Disable Unused Services: Disable any unused MySQL services and applications to reduce the potential attack surface.
8. Enable Logging: Enable logging in MySQL to keep track of user activities and database events.
9. Monitor the System: Monitor the system and MySQL logs for any suspicious activities or attempted attacks.

By following these best practices, you can significantly enhance the security of your Ubuntu MySQL database.