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 18.104.22.168, “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:
mysql_ssl_rsa_setup attempts to create SSL and RSA files using a default set of file names. It works as follows:
mysql_ssl_rsa_setup checks for the openssl binary at the locations specified by the
PATHenvironment 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
--datadiroption, or the compiled-in data directory if the
--datadiroption is not given.
mysql_ssl_rsa_setup checks the data directory for SSL files with the following names:
ca.pem server-cert.pem server-key.pem
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 6.3.1, “Configuring MySQL to Use Encrypted Connections”.
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
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
caching_sha2_passwordplugin; see Section 22.214.171.124, “SHA-256 Pluggable Authentication”, and Section 126.96.36.199, “Caching SHA-2 Pluggable Authentication”.
For information about the characteristics of files created by mysql_ssl_rsa_setup, see Section 188.8.131.52, “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-key options at startup to
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
--ssl-key options to name the
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:
Stop the server.
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 can see that they exist and does not overwrite them.)
Restart the server.
mysql_ssl_rsa_setup supports the following
command-line options, which can be specified on the command line
or in the
[mysqld] groups of an option file. For
information about option files used by MySQL programs, see
Section 184.108.40.206, “Using Option Files”.
Table 4.9 mysql_ssl_rsa_setup Options
Display a help message and exit.
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.
The suffix for the Common Name attribute in X.509 certificates. The suffix value is limited to 17 characters. The default is based on the MySQL version number.
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
rooton a system that supports the
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.
Display version information and exit.