server_with_existing_volume.yaml

heat_template_version: 2021-04-16


description: >
  This template shows how to create a server instance and attach an existing
  volume to it


parameters:
  key_name:
    type: string
    description: Name of an existing key pair to enable SSH access to the server
    constraints:
      - custom_constraint: nova.keypair

  flavor:
    type: string
    description: The flavor of server to create
    default: t3.xsmall
    constraints:
      - custom_constraint: nova.flavor

  image:
    type: string
    description: ID or name of the image to use for the server
    default: NeCTAR Ubuntu 22.04 LTS (Jammy) amd64

  availability_zone:
    type: string
    description: The Nectar availability zone

  volume_id:
    type: number
    description: The ID of the existing volume


resources:
  my_secgroup:
    # https://docs.openstack.org/heat/latest/template_guide/openstack.html#OS::Neutron::SecurityGroup
    type: OS::Neutron::SecurityGroup
    properties:
      rules:
        - remote_ip_prefix: 0.0.0.0/0
          protocol: icmp
        - remote_ip_prefix: 0.0.0.0/0
          protocol: tcp
          port_range_min: 22
          port_range_max: 22

  my_server:
    # https://docs.openstack.org/heat/latest/template_guide/openstack.html#OS::Nova::Server
    type: OS::Nova::Server
    properties:
      key_name: { get_param: key_name }
      image: { get_param: image }
      flavor: { get_param: flavor }
      availability_zone: { get_param: availability_zone }
      security_groups:
        - { get_resource: my_secgroup }
      networks:
        - allocate_network: auto

  my_volume_attachment:
    # https://docs.openstack.org/heat/latest/template_guide/openstack.html#OS::Cinder::VolumeAttachment
    type: OS::Cinder::VolumeAttachment
    properties:
      volume_id: { get_param: volume_id }
      instance_uuid: { get_resource: my_server }


outputs:
  server_ip:
    description: Public IP address of the newly created Nova instance.
    value: { get_attr: [my_server, first_address] }