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6.3.8.2 Building MySQL with Support for Secure Connections

To use SSL connections between the MySQL server and client programs, your system must support either OpenSSL or yaSSL:

  • MySQL Enterprise Edition binary distributions are compiled using yaSSL.

  • MySQL Community Edition binary distributions are compiled using yaSSL.

  • MySQL Community Edition source distributions can be compiled using either OpenSSL or yaSSL.

If you compile MySQL from a source distribution, CMake configures the distribution to use yaSSL by default. To compile using OpenSSL instead, use this procedure:

  1. Ensure OpenSSL 1.0.1 or higher is installed on your system. To obtain OpenSSL, visit http://www.openssl.org.

  2. To use OpenSSL, add the -DWITH_SSL=system option to the CMake command you normally use to configure the MySQL source distribution. For example:

    shell> cmake . -DWITH_SSL=system
    

    That command configures the distribution to use the installed OpenSSL library. See Section 2.9.4, “MySQL Source-Configuration Options”.

  3. Compile and install the distribution.

To check whether a mysqld server supports secure connections, examine the value of the have_ssl system variable:

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

If the value is YES, the server supports secure connections. If the value is DISABLED, the server is capable of supporting secure connections but was not started with the appropriate --ssl-xxx options to enable secure connections to be used; see Section 6.3.8.4, “Configuring MySQL to Use Secure Connections”.


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