cloud_init.yaml

# http://docs.openstack.org/developer/heat/template_guide/hot_spec.html#heat-template-version
heat_template_version: 2021-04-16


description: >
  This template demonstrates how boot-time configuration can be applied with
  cloud-init using the CloudConfig resource. Any cloud-init modules can be
  used.


parameters:
  key_name:
    type: string
    label: Key Name
    description: Name of an existing KeyPair to enable SSH access to the instances.

  flavor:
    type: string
    description: The NeCTAR flavour the webserver is to run on
    default: t3.xsmall

  image:
    type: string
    description: ID or name of the image to use for the instance to be created (should work with all NeCTAR images)
    default: NeCTAR Ubuntu 22.04 LTS (Jammy) amd64

  availability_zone:
    type: string
    description: Availability Zone


resources:
  security_group:
    # 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
        - remote_ip_prefix: 0.0.0.0/0
          protocol: tcp
          port_range_min: 80
          port_range_max: 80

  cloud_config:
    # http://docs.openstack.org/developer/heat/template_guide/openstack.html#OS::Heat::CloudConfig
    type: OS::Heat::CloudConfig
    properties:
      cloud_config:
        # You can add any cloud-init config directives here
        # https://cloudinit.readthedocs.io/en/latest/topics/modules.html
        write_files:
          - path: /tmp/test
            content: "Content written by cloud-init"
        users:
          - default  # Include the default 'ubuntu' user
          - name: cloudy
            gecos: Magic Cloud App Daemon User
            system: true
        package_update: true
        package_upgrade: true
        packages:
          - nginx

  cloud_init_user_data:
    # http://docs.openstack.org/developer/heat/template_guide/openstack.html#OS::Heat::MultipartMime
    type: OS::Heat::MultipartMime
    properties:
      parts:
      - config: { get_resource: cloud_config }

  server:
    # http://docs.openstack.org/developer/heat/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: security_group }
      networks:
        - allocate_network: auto
      user_data_format: RAW
      user_data:
        get_resource: cloud_init_user_data