heatdemo.yaml

heat_template_version: 2014-10-16

description: Demo template to deploy a pair of webservers and a loadbalancer

parameters:
    key_name:
        type: string
        description: Name of SSH keypair to be used for compute instance
    flavor:
        type: string
        default: dc1.1x1.20
        constraints:
            - allowed_values:
                - dc1.1x1.20
                - dc1.1x2.20
        description: Must be a valid DataCentred Compute Cloud flavour
    image:
        type: string
        default: 6c3047c6-17b1-4aaf-a657-9229bb481e50
        description: Image ID
    networks:
        type: string
        description: Network IDs for which the instances should have an interface attached
        default: 6d4e94ab-e397-4d10-866e-94e7d3b6efb9
    subnet:
        type: string
        description: ID for the subnet in which we want to create our loadbalancer
        default: 31d38e20-05c1-4b5a-b510-49b7bc80edbf
    user_data:
        type: string
        default: |
            #cloud-config
            packages:
                - nginx
    name:
        type: string
        description: Name of instances
        default: webserver

resources:
    webserver0:
        type: OS::Nova::Server
        properties:
            key_name:           { get_param: key_name }
            flavor:             { get_param: flavor }
            image:              { get_param: image }
            networks:           [{ network: { get_param: networks } }]
            user_data:          { get_param: user_data }
            user_data_format:   RAW

    webserver1:
        type: OS::Nova::Server
        properties:
            key_name:           { get_param: key_name }
            flavor:             { get_param: flavor }
            image:              { get_param: image }
            networks:           [{ network: { get_param: networks } }]
            user_data:          { get_param: user_data }
            user_data_format:   RAW

    lb_pool:
        type: OS::Neutron::Pool
        properties:
            protocol: HTTP
            subnet_id: { get_param: subnet }
            lb_method: ROUND_ROBIN
            vip:
                protocol_port: 80

    lb_members:
        type: OS::Neutron::LoadBalancer
        properties:
            pool_id:        { get_resource: lb_pool }
            members:        [ { get_resource: webserver0 }, { get_resource: webserver1 } ]
            protocol_port:  80

outputs:
    vip_ip:
       description: IP of VIP
       value: { get_attr: [ lb_pool, vip, address ] }