vms.yaml

heat_template_version: 2015-04-30

description: Heat template to create a VMs at scale in a single virtual-network

parameters:
  vm_name:
    type: string
    description: VM name to be created 
 
  num_vms:
    type: number
    description: Number of VMs to be created 
 
  vm_image:
    type: string
    description: Name of the VM image
    
  vm_flavor:
    type: string
    description: Flavor of the VM image

  vm_network:
    type: string
    description: VirtualNetwork in which the VM to be created

resources:
  instances:
    type: OS::Heat::ResourceGroup
    properties:
      count: {get_param: num_vms }
      resource_def:
        type: OS::Nova::Server
        properties:
          name: 
            list_join: ['-', [ {get_param: vm_name }, '%index%' ]]
          image: { get_param:  vm_image }
          flavor: { get_param: vm_flavor }
          networks:
            - network: { get_param: vm_network }


outputs:
  instance_name:
    description: Name of the instance
    value: { get_attr: [instances, name] }
  instance_ip:
    description: IP address of the instance
    value: { get_attr: [instances, first_address] }