Install Gems
pkg_add -v ftp://ftp.openbsd.org/pub/OpenBSD/4.1/packages/i386/ruby-gems-0.9.0.tgz

Install Rails And FCGI
gem install rails
gem install fcgi

Install Default Database
/usr/local/bin/mysql_install_db

Start Service And Set Root Password
/usr/local/bin/mysqld_safe &
/usr/local/bin/mysqladmin -u root password ‘<password>’

Start Daemon on Server Startup, Add to /etc/rc.local
if [ -x /usr/local/bin/mysqld_safe ]; then
  echo ‘MySQL’
  /usr/local/bin/mysqld_safe &
fi

Example /etc/lighttpd.conf For PHP
$HTTP["host"] == “www.<example>.com” {
   server.document-root = “/www/sites/<example>.com/www/”
   index-file.names = ( “index.php” )
   server.error-handler-404 = “/index.php”
fastcgi.server = ( “.php” =>
   ( “localhost” =>
      (
         ”socket” => “/tmp/php-fastcgi.socket”,
         ”bin-path” => “/usr/local/bin/php-fcgi”
      )
   )
)
}

Example /etc/lighttpd.conf For Ruby on Rails
$HTTP["host"] == “www.<example>.com” {
   server.indexfiles = ( “index.html” )
   server.error-handler-404 = “/dispatch.fcgi”
   server.document-root = “/Rails/public”
   fastcgi.server = (”.fcgi” => ( “<example>” =>
      ( “min-procs” => 1,
         ”max-procs” => 5,
         ”socket” => “/tmp/rails-<example>.fastcgi”,
         ”bin-path” => “/Rails/public/dispatch.fcgi”,
         ”bin-environment” => ( “RAILS_ENV” => “production” )
      )
   ))
}

Start Daemon on Server Startup, Add to rc.local
if [ -x /usr/local/sbin/lighttpd ] ; then
  echo ‘Lighttp’
  /usr/local/sbin/lighttpd -f /etc/lighttpd.conf
fi