.kitchen.yml

---
driver:
  name: ec2
  aws_ssh_key_id: <%= ENV['AWS_KEYPAIR_NAME'] %>
  transport.ssh_key: <%= ENV['AWS_KEY_PATH'] %>
 
provisioner:
  name: chef_zero
 
platforms:
  - name: centos-6.4
    driver:
      image_id: ami-0fd22064
      availability_zone: us-east-1c
      tags: 
        class: intro-to-chef
        name: intro-to-chef
        remove_after: '2015-06-16'
      security_group_ids: ['sg-16899172']
 
<% number_of_students = 40 %>
<% count_of_instances = 0 %>
suites:
<%
%w[ ♣︎ ♠︎ ♥︎ ♦︎ ].each do |suit|
  %w[ A K Q J 10 9 8 7 6 5 4 3 2].each do |symbol| 
    if count_of_instances < number_of_students %>
  - name: <%= symbol %><%= suit %>
    <% count_of_instances +=1 %>
    <% end %>
  <% end %>
<% end %>

• Update line 21, change the value of number_of_students
• Create the instances using kitchen create
• Find the IP Addresses via knife with this command:

knife ec2 server list --region $AWS_REGION -A $AWS_ACCESS_KEY_ID -K $AWS_SECRET_ACCESS_KEY |grep $AWS_KEYPAIR_NAME | grep ami-3605295e | grep running |awk '{print $2}'

• When you are done, destroy all the instances using kitchen destroy