2-deploy-vm-createvol.yaml

heat_template_version: 2014-10-16

description: a template to deploy two compute instances (CentOS7) \
  - one for web frontend \
  - another for db backend with a new volume

parameters:
  key_name:
    type: string
    label: Key Name
    description: Name of key-pair to be used for compute instance
    default: son-key
  image_id:
    type: string
    label: Image ID
    description: Image to be used for compute instance
    default: centos6
  instance_type:
    type: string
    label: Instance Type
    description: Type of instance (flavor) to be used
    default: fl.default
    constraints:
      - allowed_values: [ fl.default, fl.large, fl.xlarge, fl.huge ]
        description: Value must be one of m1.medium, m1.large or m1.xlarge

resources:
  my_web_instance:
    type: OS::Nova::Server
    properties:
      networks:
        - network: net-ptin
      key_name: { get_param: key_name }
      image: { get_param: image_id }
      flavor: { get_param: instance_type }

  my_db_instance:
    type: OS::Nova::Server
    properties:
      networks:
        - network: net-ptin
      key_name: { get_param: key_name }
      image: { get_param: image_id }
      flavor: { get_param: instance_type }
      user_data_format: RAW
      user_data:
        str_replace:
          template: |
            #cloud-config
            write_files:
              - content: |
                  #!/bin/bash
                  voldata_id="%voldata_id%"
                  voldata_dev="/dev/disk/by-uuid/virtio-$(echo ${voldata_id} | cut -c -20)"
                  mkfs.ext4 ${voldata_dev}
                  mkdir -pv /opt/apps
                  echo "${voldata_dev} /opt/apps ext4 defaults 1 2" >> /etc/fstab
                  mount /opt/apps
                path: /tmp/format-disks
                permissions: '0700'
            runcmd:
              - /tmp/format-disks
          params:
            "%voldata_id%": { get_resource: db_volume2 } 

  db_volume2:
    type: OS::Cinder::Volume
    properties: 
      size: 6

  db_vol_attach:
    type: OS::Cinder::VolumeAttachment
    properties: 
      instance_uuid: { get_resource: my_db_instance }
      volume_id: { get_resource: db_volume2 } 
      mountpoint: /dev/vdb

outputs:
  www_instance_ip:
    description: the IP address of the instance
    value: { get_attr: [my_web_instance, first_address] }
  db_instance_ip:
    description: the IP address of the instance
    value: { get_attr: [my_db_instance, first_address] }