Wednesday, 26 May 2010

Using SSL Connections with MySQL

It is very important to secure connection between MySQL Server and Clients. This can be achieved by using SSL connections between MySQL server and client program.


1. MySQL that has been built with SSL support, and you are going to use OpenSSL.
2. Reader has basic Unix/MySQL Skills
3. Client program is running on windows machine (IP:192.168..0.5)
4. Server program is running on Centos/Redhat machine (IP:

Setting Up SSL Certificates for MySQL:

The following openssl commands will prompt you for several inputs. For testing, you can press Enter to all prompts.

1. Create new folder

shell> mkdir -p /etc/mysql
shell> chown -R mysql:mysql /etc/mysql/
shell> cd /etc/mysql/

2. Create CA certificate

shell> openssl genrsa 2048 > ca-key.pem

shell> openssl req -new -x509 -nodes -days 1000 -key ca-key.pem > ca-cert.pem

3. Create server certificate

shell> openssl req -newkey rsa:2048 -days 1000 -nodes -keyout server-key.pem > server-req.pem

shell> openssl x509 -req -in server-req.pem -days 1000 -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 > server-cert.pem

4. Create client certificate

shell> openssl req -newkey rsa:2048 -days 1000 -nodes -keyout client-key.pem > client-req.pem

shell> openssl x509 -req -in client-req.pem -days 1000 -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 > client-cert.pem

5. Add these lines into MySQL option file (i.e. /etc/my.cnf)


6. Restart MySQL Instance

shell> /etc/init.d/mysql restart

7. Connect to MySQL server using mysql client program and check whether SSL support is enabled

shell> mysql -uroot -pxxxx

mysql> SHOW VARIABLES LIKE 'have_ssl'; 
| Variable_name | Value | 
| have_ssl      | YES   | 

8. Create a user with REQUIRE SSL option

mysql> GRANT ALL ON test.* TO 'ssl_user'@'' IDENTIFIED BY 'password' REQUIRE SSL;

9. Copy following files from /etc/mysql/ onto windows client on c:\ssl\


10. Test connectivity from windows O/S. From command prompt run this command

C:\>mysql -h192.168.0.4 -ussl_user -ppassword --ssl-ca c:\ssl\ca-cert.pem --ssl-cert
c:\ssl\client-cert.pem --ssl-key c:\ssl\client-key.pem

11. Once connected successfully, run this command to verify SSL connection

mysql> SHOW STATUS LIKE 'Ssl_cipher';
| Variable_name | Value              |
| Ssl_cipher    | DHE-RSA-AES256-SHA | 



  1. I've recently purchased SSL Certificates courtesy of a great reseller and have been looking at how to make the clients connection more secure using MySQL, so this is a decent walkthrough. Thanks for sharing!

  2. This comment has been removed by the author.

  3. First of all thank you for your information. They were really helpful. Unfortunately I have a problem. I did all of your steps and everything worked fine. I can connect to my database using the command prompt, but when I try to connect with navicat or MySQL Workbench, I get an 2026 Error. What am I doing wrong?

  4. WildCard SSL certificate are designed and developed to secure unlimited subdomains, including the Fully Qualified Domain Name. Using Single Wildcard SSL Certificate, you may incorporate an ample amount of pages over all subdomains.

    EV SSL Certificate or Extended Validation SSL Certificates is an unique form of the X.509 certificate which involves extensive verification of the organization by the Certificate Authority (CA) before a certificate is issued.

  5. The 2026 error is due to the the same CN(comman Name ) which you have given while creating the client and server keys. The CN for client and server should be different.

  6. 9. Copy following files from /etc/mysql/ onto windows client on c:\ssl\

    should be

  7. how to make the connection between CA(EJBCA-JBOSS) and MySQL using SSL ?? please help me.

  8. Hi Guys,

    followed the guide... gave different common names to the 3 certificates.

    i can connect from navicat on my mac, but if i try and connect from navicat i get 2026 SSL error,

    any ideas??

  9. if i try and connect from naviciat on windows**