my $dbh = DBI->connect(join('',
        'DBI:mysql:database=_DATABASE_;host=_HOST_;',
        qw{
            mysql_ssl=1;
            mysql_ssl_client_key=/etc/mysql/certs/client-key.pem;
            mysql_ssl_client_cert=/etc/mysql/certs/client-cert.pem;
            mysql_ssl_ca_file=/etc/mysql/certs/ca-cert.pem
        }
    ),
    '_SSL_USER_',
    '_SSL_USER_PWD_'
) || die DBI->errstr;