Heat Docker template using wait conditions

docker_wc.yaml

heat_template_version: 2013-05-23

description: >
  Heat Docker template using wait conditions.

parameters:

  key_name:
    type: string
    description : Name of a KeyPair to enable SSH access to the instance
    default: heat

  instance_type:
    type: string
    description: Instance type for WordPress server
    default: m1.small

  image_id:
    type: string
    description: >
      Name or ID of the image to use for the Docker server.
      Recommended values are fedora-20.i386 or fedora-20.x86_64;
      get them from http://cloud.fedoraproject.org/fedora-20.i386.qcow2
      or http://cloud.fedoraproject.org/fedora-20.x86_64.qcow2 .

resources:
  docker_sg:
    type: OS::Neutron::SecurityGroup
    properties:
      description: Ping, SSH, Docker
      rules:
      - protocol: icmp
      - protocol: tcp
        port_range_min: 22
        port_range_max: 22
      - protocol: tcp
        port_range_min: 80
        port_range_max: 80
      - protocol: tcp
        port_range_min: 2345
        port_range_max: 2345

  docker_wait_handle:
    type: AWS::CloudFormation::WaitConditionHandle

  docker_wait_condition:
    type: AWS::CloudFormation::WaitCondition
    depends_on: [docker_host]
    properties:
      Handle:
        get_resource: docker_wait_handle
      Timeout: '6000'

  docker_host:
    type: OS::Nova::Server
    properties:
      image: {get_param: image_id}
      flavor: {get_param: instance_type}
      key_name: {get_param: key_name}
      security_groups:
        - {get_resource: docker_sg}
      user_data_format: RAW
      user_data:
        str_replace:
          template: |
            #!/bin/bash -v
            setenforce 0
            yum -y install docker-io
            cp /usr/lib/systemd/system/docker.service /etc/systemd/system/
            sed -i -e '/ExecStart/ { s,fd://,tcp://0.0.0.0:2345, }' /etc/systemd/system/docker.service
            systemctl start docker.service
            cfn-signal -e 0 --data "OK" -r "Setup complete" "WAIT_HANDLE"
          params:
            WAIT_HANDLE: {get_resource: docker_wait_handle}

  database_password:
    type: OS::Heat::RandomString

  database:
    type: DockerInc::Docker::Container
    depends_on: [docker_wait_condition]
    properties:
      image: mysql
      name: db
      docker_endpoint:
        str_replace:
          template: http://host:2345/
          params:
            host: {get_attr: [docker_host, networks, private, 0]}
      env:
        - {str_replace: {template: MYSQL_ROOT_PASSWORD=password,
                         params: {password: {get_attr: [database_password, value]}}}

  wordpress:
    type: DockerInc::Docker::Container
    depends_on: [database]
    properties:
      image: wordpress
      links:
        db: mysql
      port_bindings:
        80/tcp: [{"HostPort": "80"}]
      docker_endpoint:
        str_replace:
          template: http://host:2345/
          params:
            host: {get_attr: [docker_host, networks, private, 0]}

outputs:
  info:
    description: Public address of the web site
    value:
      str_replace:
        template: http://host/wordpress
        params:
          host: {get_attr: [docker_host, networks, private, 0]}