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Setting up MySQL with SSL allows secure encrypted connections between the MySQL server the MySQL client. This guide will walk you through setting up SSL for MySQL on your VPS.
- Generate server and client certificates. You will need to generate 2 certificates pairs, one for the server and one for the client. The official MySQL documentation has a guide on generating the server and client certificates: http://dev.mysql.com/doc/refman/5.7/en/creating-ssl-files-using-openssl.html
- Once your certificates are generated, create a directory on the server to store the server certificates such as C:\MySQL\mysql-ssl (Windows) or /etc/mysql-ssl (Linux) and copy the server-key.pem, server-cert.pem and ca.pem files there.
- Edit the my.ini file (Windows) or my.cnf file (Linux). Under the [mysqld] section add the following:
- my.ini on Windows
ssl-ca="C:/MySQL/mysql-ssl/ca.pem" ssl-cert="C:/MySQL/mysql-ssl/server-cert.pem" ssl-key="C:/MySQL/mysql-ssl/server-key.pem"
- my.cnf on Linux
ssl-ca=/etc/mysql-ssl/ca.pem ssl-cert=/etc/mysql-ssl/server-cert.pem ssl-key=/etc/mysql-ssl/server-key.pem
- my.ini on Windows
- Restart MySQL server
- Test if MySQL now has SSL enabled by running this query at the MySQL Prompt
show global variables like 'have_%ssl';
- If you get the following output, it means SSL is properly enabled on your MySQL server
mysql> show global variables like 'have_%ssl'; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | have_openssl | YES | | have_ssl | YES | +---------------+-------+ 2 rows in set (0.00 sec)
- If the value is not set to yes, you will need to look at the MySQL error log for more information. The MySQL log is normally found in C:\MySQL\data\mysqld.err (Windows) or /var/log/mysqld.log (Linux).
- To create a user that can only connect to your MySQL server using SSL, run the following query at the MySQL prompt:
GRANT ALL PRIVILEGES ON *.* TO `user_name`@`%` IDENTIFIED BY 'password' REQUIRE SSL;
- You will need to use the generated client certificate/key pairs (from Step 1) to be connect MySQL using SSL