chef_ssh.rb

require 'rubygems'
require 'rest_client'
require 'json'
require 'net/ssh'

servers_json = RestClient.get("http://localhost:5984/chef/_design/nodes/_view/ec2_hostnames")
servers = JSON.parse(servers_json)

servers["rows"].each do |row|
  Net::SSH.start(
  row["value"][0], 
  "user",
  :port => 22, 
  :keys => "~/.ssh/somekey", 
  :paranoid => false ) do |ssh|
    puts ""
    puts row["value"][0]
    puts row["value"][1]
    output = ssh.exec! "ls"
    puts output
    puts ""
  end
end

ec2_hostnames

function(doc) { 
  if (doc.chef_type == "node") {
    emit(doc.name, [doc.attributes.ec2.public_hostname, doc.attributes.tags[0]]);
  }
}