cloudfuckery.rb

#!/usr/bin/env ruby

require 'aws-sdk'

metadata = {
  image_id:      'ami-9aaa1cf2',
  instance_type: 't2.micro',
  subnet:        'subnet-a55587fc',
  key_name:      'ops'
}

script=<<END
#!/bin/bash

for i in `seq 120`
do
  date
  sleep 1
done

# our job is done, shut down
halt
END

ec2 = AWS::EC2.new
i = ec2.instances.create({
  image_id:                             metadata[:image_id],
  instance_type:                        metadata[:instance_type],
  subnet:                               metadata[:subnet],
  associate_public_ip_address:          true,
  key_name:                             metadata[:key_name],
  instance_initiated_shutdown_behavior: 'terminate',
  user_data:                            script
})

puts "launched #{i.id}..."