How to create a ssh tunnel in ruby and then connect to mysql server on the remote host

Question

I would like to create a ruby script that I can run mysql commands on a remote server through a ssh tunnel.

Right now I have a manual process to do this:

Answer 1

This might be one possible solution:

require 'rubygems'  
require 'mysql'  
require 'net/ssh/gateway'  


gateway = Net::SSH::Gateway.new("server","user")  
port = gateway.open("127.0.0.1",3306,3307)

  child = fork do  
    mysql = Mysql.connect("127.0.0.1","user","password","mysql",port)  
    sql = "select sleep(5)"  
    mysql.query(sql)  
    mysql.close  
    exit  
  end  
  puts "child: #{child}"  
Process.wait  
gateway.close(port)  

Maybe there is a better way, but this works for what I was trying to do.