gistfile1.rb

require 'rubygems'
require 'pp'
# you need these two gems, so `gem install` them before
require 'linode'
require 'aws-sdk'

API_KEY="YOUR_LINODE_KEY"

# create a simple domain and add a record to it
# make sure you have the env variables AWS_ACCESS_KEY_ID & AWS_SECRET_ACCESS_KEY set before running this
config = AWS.config
client = config.route_53_client

linode = Linode.new(:api_key => API_KEY)

# iterate over all domains
domains = linode.domain.list
domains.each { |d|
  # only migrate if they're still attached to linode (this is error prone, but works for me)
  if `dig ns #{d.domain}`.match("linode")
    # we need to migrate this
    resp = linode.domain.resource.list({:domainid => d.domainid})
    batch = []
    mx_resources = []
    txt_resources = []
    resp.each { |res|
      # collapse mx and txt resources
      if res.type.upcase == "MX"
        mx_resources.push "#{mx_resources.size + 1} #{res.target}"
      elsif res.type.upcase == "TXT"
        txt_resources.push res.target
      else
        batch.push({:target => [{:value => res.target}], :name => res.name, :type => res.type.upcase})
      end
    }
    # I didn't want to migrate somedomain.com
    if d.domain != "somedomain.com"
      batch_req = {:changes => []}
      batch.each do |v|
        res_name = v[:name].empty? ? d.domain : "#{v[:name]}.#{d.domain}"
        req = {:name => res_name, :ttl => 3600, :type => v[:type], :resource_records => v[:target]}
        batch_req[:changes].push({:action => "CREATE", :resource_record_set => req})
      end
      if mx_resources.size > 0
        req = {:name => d.domain, :ttl => 3600, :type => "MX", :resource_records => mx_resources.map {|r| {:value => r}}}
        batch_req[:changes].push({:action => "CREATE", :resource_record_set => req})
      end
      if txt_resources.size > 0
        req = {:name => d.domain, :ttl => 3600, :type => "TXT", :resource_records => txt_resources.map {|r| {:value => "\"#{r}\""}}}
        batch_req[:changes].push({:action => "CREATE", :resource_record_set => req})
      end
      
      # create zone in route53
      aws_resp = client.create_hosted_zone({:name => d.domain, :caller_reference => "domain_migration_linode.#{Time.now.to_f}"})
      if aws_resp && aws_resp[:hosted_zone][:id]
        aws_res_resp = client.change_resource_record_sets({:hosted_zone_id => aws_resp[:hosted_zone][:id], :change_batch => batch_req})
        dns = aws_resp[:delegation_set][:name_servers].join(",")
        if aws_res_resp
          puts "#{d.domain},#{dns}"
        end
      end
    end
  end
}