... my $port = 12345; # whatever is should be my $dsn = "DBI:mysql:database=$db;host=$server;port=$port; mysql_ssl=1; mysql_ssl_client_key=/var/lib/ssl/client-key.pem; mysql_ssl_client_cert=/var/lib/ssl/client-cert.pem; mysql_ssl_ca_file=/var/lib/ssl/cacert.pem"; # Your paths may vary... ...