server_with_dns_record.yaml

heat_template_version: 2021-04-16

description: >
  This template is an example of how to create DNS records for a zone that
  already exists. A simple server is created, and a DNS record is created
  for it using the name of the stack and the servers first IP address in
  the given DNS zone.

parameters:
  key_name:
    type: string
    description: Keypair for SSH access
    constraints:
      - custom_constraint: nova.keypair
        description: Must be an existing keypair

  flavor:
    type: string
    description: Flavor
    default: t3.xsmall
    constraints:
      - custom_constraint: nova.flavor
        description: Must be an existing flavor

  image:
    type: string
    description: Image ID or name
    default: NeCTAR Ubuntu 22.04 LTS (Jammy) amd64

  availability_zone:
    type: string
    description: Availability Zone

  zone:
    type: string
    description: DNS zone name or ID
    constraints:
      - custom_constraint: designate.zone


resources:
  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

  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: secgroup }
      networks:
        - allocate_network: auto

  dns_record:
    type: OS::Designate::RecordSet
    properties:
      name: { get_param: "OS::stack_name" }
      type: A
      records:
        - { get_attr: [server, first_address] }
      zone: { get_param: zone }