Example for Jason

testasguserdata.yaml

heat_template_version: 2013-05-23

description: |
  Test template using all resources supported on the Rackspace Public Cloud

resources:

  aws_server:
    type: AWS::EC2::Instance
    properties:
      ImageId: 2936a16d-ee01-452c-a6ab-7117df5196f8  # Ubuntu 13.10 (Saucy Salamander)
      InstanceType: 4 GB Performance
      UserData:
        str_replace:
          template: |
            #!/bin/bash
            apt-get update
            apt-get -y install curl
            sleep 2
            curl -i -X PUT --data-binary '{"status": "SUCCESS", "reason": "AWS Signal"}' wc_notify
          params:
            wc_notify: { get_resource: aws_handle }
  
  aws_handle:
    type: AWS::CloudFormation::WaitConditionHandle
  
  aws_wait_condition:
    type: AWS::CloudFormation::WaitCondition
    properties:
      Handle: { get_resource: aws_handle }
      Timeout: 600

outputs:

    data:
        description: Wait condition data
        value: { get_attr: [ aws_wait_condition, Data ] }