---
heat_template_version: 2015-04-30

description: Simple Example template to deploy a virtual compute cluster.

parameters:
  image_name:
    type: string
    label: Image Name
    description: Name of image to be used for compute instance
  public_net:
    type: string
    label: Public Net Name
    description: Public network used for router.
  ssh_key:
    type: string
    label: ssh key name.
    description: ssh public key name. (Must be uploaded to openstack first)
  compute_flavor:
    type: string
    label: Flavor for compute nodes,
    description: Flavor with which to start compute nodes.
  aux_flavor:
    type: string
    label: Flavor for auxiliary nodes.
    description: Flavor with which to start auxiliary nodes. (for now only the interface machine)
  cidr:
    type: string
    label: Cidr for internal subnet
    description: Cidr for the subnet of the internal user network.
  internal_net_name:
    type: string
    label: Name for the internal network
    description: Name for the internal network of this cluster.
  volume_size:
    type: string
    label: Size (GB)
    description: Size (GB) of the volume for each compute node


resources:
  internal_net:
    type: OS::Neutron::Net
    properties:
      name: {get_param: internal_net_name}

  internal_subnet:
    type: OS::Neutron::Subnet
    properties:
      network_id: {get_resource: internal_net}
      cidr: {get_param: cidr}
      dns_nameservers: ["129.125.4.6", "129.125.36.10"]
      ip_version: 4

  internal_router:
    type: OS::Neutron::Router
    properties:
      external_gateway_info: {network: {get_param: public_net}}

  internal_interface:
    type: OS::Neutron::RouterInterface
    properties:
      router_id: {get_resource: internal_router}
      subnet: {get_resource: internal_subnet}

  public_port:
    type: OS::Neutron::Port
    properties:
      network_id: {get_resource: internal_net}
      fixed_ips:
        - subnet_id: {get_resource: internal_subnet}
      security_groups:
        - default

  floating_ip:
    type: OS::Neutron::FloatingIP
    properties:
      floating_network_id: {get_param: public_net}
      port_id: {get_resource: public_port}

  interface:  # User-interface for cluster-operation
    type: OS::Nova::Server
    properties:
      key_name: {get_param: ssh_key}
      image: {get_param: image_name}
      flavor: {get_param: aux_flavor}
      networks:
        - port: {get_resource: public_port}

  admin:  # Machine to run slurm and other admin tools on.
    type: OS::Nova::Server
    properties:
      key_name: {get_param: ssh_key}
      image: {get_param: image_name}
      flavor: {get_param: aux_flavor}
      networks:
        - network: {get_resource: internal_net}

  vcompute01-volume:
    type: OS::Cinder::Volume
    properties:
      size: {get_param: volume_size}

  vcompute01:
    type: OS::Nova::Server
    properties:
      key_name: adminkey
      image: {get_param: image_name}
      flavor: {get_param: compute_flavor}
      networks:
        - network: {get_resource: internal_net}

  volume_attachment:
    type: OS::Cinder::VolumeAttachment
    properties:
      volume_id: {get_resource: vcompute01-volume}
      instance_uuid: {get_resource: vcompute01}

  vcompute02-volume:
    type: OS::Cinder::Volume
    properties:
      size: {get_param: volume_size}

  vcompute02:
    type: OS::Nova::Server
    properties:
      key_name: adminkey
      image: {get_param: image_name}
      flavor: {get_param: compute_flavor}
      networks:
        - network: {get_resource: internal_net}

  volume_attachment:
    type: OS::Cinder::VolumeAttachment
    properties:
      volume_id: {get_resource: vcompute02-volume}
      instance_uuid: {get_resource: vcompute02}