userdata-heat-stack.yaml

heat_template_version: 2015-10-15

description: Template to deploy two compute instance with a volume attached

parameters:

  image:
    type: string
    label: Image name or ID
    description: Image to be used for compute instance
    constraints:
    - allowed_values: [cirros, centos, ubuntu]
    default: cirros
  flavor:
    type: string
    label: Flavor
    description: Type of flavor to be used
    constraints:
    - allowed_values: [small, medium, large]
    default: small
  key:
    type: string
    label: Key name
    description: Name of key-pair to be used for compute instance
    default: demokey
  private_network:
    type: string
    label: Private network name or ID
    description: Network to attach instance to.
  volume_size:
    type: string
    label: size of volume
    description: This is the size of the Volume
    default: 3

resources:
  my_web:
    type: OS::Nova::Server
    properties:
      image: { get_param: image }
      flavor: { get_param: flavor }
      key_name: { get_param: key }
      networks:
        - network: { get_param: private_network }

  my_db:
    type: OS::Nova::Server
    properties:
      image: { get_param: image }
      flavor: { get_param: flavor }
      key_name: { get_param: key }
      networks:
        - network: { get_param: private_network }
      user_data_format: RAW
      user_data: |
        #!/bin/bash
        mkfs.ext4 /dev/vdb
        echo '/dev/vdb /mnt ext4 defaults 1 1' >> /etc/fstab
        mount -a

  my_vol:
   type: OS::Cinder::Volume
   properties:
      size: { get_param: volume_size }

  vol_attachment:
   type: OS::Cinder::VolumeAttachment
   properties:
      instance_uuid: { get_resource: my_db }
      volume_id: { get_resource: my_vol }
      mountpoint: /dev/vdb

outputs:
 web_instance_name:
   description: Name of the web instance
   value: { get_attr: [my_web, name] }
 web_instance_ip:
   description: IP address of the web instance
   value: { get_attr: [my_web, first_address] }
 db_instance_name:
   description: Name of the db instance
   value: { get_attr: [my_db, name] }
 db_instance_ip:
   description: IP address of the db instance
   value: { get_attr: [my_db, first_address] }
 volume_name:
   description: Volume name attached to the db instance
   value: { get_attr: [my_vol, display_name] }
 volume_type:
   description: Volume type attached to the db instance
   value: { get_attr: [my_vol, volume_type] }