Open Stack

Hi,

I have recently upgraded to Havana and just started trying out Heat. I tried to launch a stack by using this template file:
https://github.com/openstack/heat-templates/blob/master/hot/servers_in_existing_neutron_net.yaml

However, I am not familiar with these type of files and I am not sure of what information I should add to the file to make it valid for Heat.
This is what my modified file looks like:

heat_template_version: 2013-05-23

description: >
  HOT template to deploy two servers into an existing neutron tenant network and
  assign floating IP addresses to each server so they are routable from the
  public network.

parameters:
  key_name: mykey
    type: string
    description: Name of keypair to assign to servers
  image: Ubuntu
    type: string
    description: Name of image to use for servers
  flavor: m1.small
    type: string
    description: Flavor to use for servers
  public_net_id: 55896cd0-040a-4e7b-8a92-cb27f32b4ad9
    type: string
    description: >
      ID of public network for which floating IP addresses will be allocated
  private_net_id: 3bd4e56f-1e8c-4316-8e59-a358016e9ef8
    type: string
    description: ID of private network into which servers get deployed
  private_subnet_id: f4bac2ea-b74d-47ef-a8b3-5969d60bfbba
    type: string
    description: ID of private sub network into which servers get deployed

resources:
  server1:
    type: OS::Nova::Server
    properties:
      name: Server1
      image: { get_param: image }
      flavor: { get_param: flavor }
      key_name: { get_param: key_name }
      networks:
        - port: { get_resource: server1_port }

  server1_port:
    type: OS::Neutron::Port
    properties:
      network_id: { get_param: private_net_id }
      fixed_ips:
        - subnet_id: { get_param: private_subnet_id }

  server1_floating_ip:
    type: OS::Neutron::FloatingIP
    properties:
      floating_network_id: { get_param: public_net_id }
      port_id: { get_resource: server1_port }

  server2:
    type: OS::Nova::Server
    properties:
      name: Server2
      image: { get_param: image }
      flavor: { get_param: flavor }
      key_name: { get_param: key_name }
      networks:
        - port: { get_resource: server2_port }

  server2_port:
    type: OS::Neutron::Port
    properties:
      network_id: { get_param: private_net_id }
      fixed_ips:
        - subnet_id: { get_param: private_subnet_id }

  server2_floating_ip:
    type: OS::Neutron::FloatingIP
    properties:
      floating_network_id: { get_param: public_net_id }
      port_id: { get_resource: server2_port }

outputs:
  server1_private_ip:
    description: IP address of server1 in private network
    value: { get_attr: [ server1, first_address ] }
  server1_public_ip:
    description: Floating IP address of server1 in public network
    value: { get_attr: [ server1_floating_ip, floating_ip_address ] }
  server2_private_ip:
    description: IP address of server2 in private network
    value: { get_attr: [ server2, first_address ] }
  server2_public_ip:
    description: Floating IP address of server2 in public network
    value: { get_attr: [ server2_floating_ip, floating_ip_address ] }


When I try to run the command:
heat stack-create mystack --template-file=/scripts/servers_in_existing_neutron_net.yaml

I get the following error:
ERROR: Template not in valid format


Any ideas?

Therese
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