Provided by: mysql-server-5.7_5.7.23-2ubuntu1_amd64 bug


       mysql_ssl_rsa_setup - create SSL/RSA files


       mysql_ssl_rsa_setup [options]


       This program creates the SSL certificate and key files and RSA key-pair files required to
       support secure connections using SSL and secure password exchange using RSA over
       unencrypted connections, if those files are missing.  mysql_ssl_rsa_setup can also be used
       to create new SSL files if the existing ones have expired.

           mysql_ssl_rsa_setup uses the openssl command, so its use is contingent on having
           OpenSSL installed on your machine.

           Another way to generate SSL and RSA files, for MySQL distributions compiled using
           OpenSSL, is to have the server generate them automatically. See Section,
           “Creating SSL and RSA Certificates and Keys using MySQL”.

           mysql_ssl_rsa_setup helps lower the barrier to using SSL by making it easier to
           generate the required files. However, certificates generated by mysql_ssl_rsa_setup
           are self-signed, which is not very secure. After you gain experience using the files
           created by mysql_ssl_rsa_setup, consider obtaining a CA certificate from a registered
           certificate authority.

       Invoke mysql_ssl_rsa_setup like this:

           shell> mysql_ssl_rsa_setup [options]

       Typical options are --datadir to specify where to create the files, and --verbose to see
       the openssl commands that mysql_ssl_rsa_setup executes.

       mysql_ssl_rsa_setup attempts to create SSL and RSA files using a default set of file
       names. It works as follows:

        1. mysql_ssl_rsa_setup checks for the openssl binary at the locations specified by the
           PATH environment variable. If openssl is not found, mysql_ssl_rsa_setup does nothing.
           If openssl is present, mysql_ssl_rsa_setup looks for default SSL and RSA files in the
           MySQL data directory specified by the --datadir option, or the compiled-in data
           directory if the --datadir option is not given.

        2. mysql_ssl_rsa_setup checks the data directory for SSL files with the following names:


        3. If any of those files are present, mysql_ssl_rsa_setup creates no SSL files.
           Otherwise, it invokes openssl to create them, plus some additional files:

               ca.pem               Self-signed CA certificate
               ca-key.pem           CA private key
               server-cert.pem      Server certificate
               server-key.pem       Server private key
               client-cert.pem      Client certificate
               client-key.pem       Client private key

           These files enable secure client connections using SSL; see Section 6.4.1,
           “Configuring MySQL to Use Encrypted Connections”.

        4. mysql_ssl_rsa_setup checks the data directory for RSA files with the following names:

               private_key.pem      Private member of private/public key pair
               public_key.pem       Public member of private/public key pair

        5. If any of these files are present, mysql_ssl_rsa_setup creates no RSA files.
           Otherwise, it invokes openssl to create them. These files enable secure password
           exchange using RSA over unencrypted connections for accounts authenticated by the
           sha256_password plugin; see Section, “SHA-256 Pluggable Authentication”.

       For information about the characteristics of files created by mysql_ssl_rsa_setup, see
       Section, “Creating SSL and RSA Certificates and Keys using MySQL”.

       At startup, the MySQL server automatically uses the SSL files created by
       mysql_ssl_rsa_setup to enable SSL if no explicit SSL options are given other than --ssl
       (possibly along with --ssl-cipher). If you prefer to designate the files explicitly,
       invoke clients with the --ssl-ca, --ssl-cert, and --ssl-key options at startup to name the
       ca.pem, server-cert.pem, and server-key.pem files, respectively.

       The server also automatically uses the RSA files created by mysql_ssl_rsa_setup to enable
       RSA if no explicit RSA options are given.

       If the server is SSL-enabled, clients use SSL by default for the connection. To specify
       certificate and key files explicitly, use the --ssl-ca, --ssl-cert, and --ssl-key options
       to name the ca.pem, client-cert.pem, and client-key.pem files, respectively. However, some
       additional client setup may be required first because mysql_ssl_rsa_setup by default
       creates those files in the data directory. The permissions for the data directory normally
       enable access only to the system account that runs the MySQL server, so client programs
       cannot use files located there. To make the files available, copy them to a directory that
       is readable (but not writable) by clients:

       ·   For local clients, the MySQL installation directory can be used. For example, if the
           data directory is a subdirectory of the installation directory and your current
           location is the data directory, you can copy the files like this:

               cp ca.pem client-cert.pem client-key.pem ..

       ·   For remote clients, distribute the files using a secure channel to ensure they are not
           tampered with during transit.

       If the SSL files used for a MySQL installation have expired, you can use
       mysql_ssl_rsa_setup to create new ones:

        1. Stop the server.

        2. Rename or remove the existing SSL files. You may wish to make a backup of them first.
           (The RSA files do not expire, so you need not remove them.  mysql_ssl_rsa_setup will
           see that they exist and not overwrite them.)

        3. Run mysql_ssl_rsa_setup with the --datadir option to specify where to create the new

        4. Restart the server.

       mysql_ssl_rsa_setup supports the following command-line options, which can be specified on
       the command line or in the [mysql_ssl_rsa_setup], [mysql_install_db], and [mysqld] groups
       of an option file. For information about option files used by MySQL programs, see
       Section 4.2.6, “Using Option Files”.

       ·   --help, ?

           Display a help message and exit.

       ·   --datadir=dir_name

           The path to the directory that mysql_ssl_rsa_setup should check for default SSL and
           RSA files and in which it should create files if they are missing. The default is the
           compiled-in data directory.

       ·   --suffix=str

           The suffix for the Common Name attribute in X509 certificates. The suffix value is
           limited to 17 characters. The default is based on the MySQL version number.

       ·   --uid=name, -v

           The name of the user who should be the owner of any created files. The value is a user
           name, not a numeric user ID. In the absence of this option, files created by
           mysql_ssl_rsa_setup are owned by the user who executes it. This option is valid only
           if you execute the program as root on a system that supports the chown() system call.

       ·   --verbose, -v

           Verbose mode. Produce more output about what the program does. For example, the
           program shows the openssl commands it runs, and produces output to indicate whether it
           skips SSL or RSA file creation because some default file already exists.

       ·   --version, -V

           Display version information and exit.


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       For more information, please refer to the MySQL Reference Manual, which may already be
       installed locally and which is also available online at


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