OpenStack Orchestration (Heat) Templates
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# This is a template that shows how to use Rackspace Auto Scale
# with a Rackspace Cloud Load Balancer. It sets up a load balancer
# to port 22 of the instances, and exposes webhooks for scaling
# the group up and down as stack outputs. Just use:
# curl -XPOST <webhook_url>
# to scale up or down, and then (after waiting a suitable amount
# of time), ssh to the virtual IP and you'll get a random instance.
heat_template_version: 2013-05-23
description: Rackspace Auto Scale Test
parameters:
key_name:
type: string
description: Name of an existing key pair to use for the instance
flavor:
type: string
description: flavor (actually an integer)
image:
type: string
description: UUID of image
resources:
my_lb:
type: Rackspace::Cloud::LoadBalancer
properties:
nodes: []
protocol: TCP
port: 22
virtualIps:
- {"type": "PUBLIC", "ipVersion": "IPV4"}
my_group:
type: Rackspace::AutoScale::Group
properties:
groupConfiguration:
name: heat-test-group
cooldown: 60
minEntities: 0
maxEntities: 3
metadata:
cool_factor: "50"
launchConfiguration:
type: launch_server
args:
server:
name: heat-scaled-server
flavorRef: {get_param: flavor}
imageRef: {get_param: image}
key_name: {get_param: key_name}
metadata:
hotness_factor: "100"
loadBalancers:
-
loadBalancerId: {get_resource: my_lb}
port: 22
add1:
type: Rackspace::AutoScale::ScalingPolicy
properties:
group: {get_resource: my_group}
name: add1
change: 1
cooldown: 59
type: webhook
dec1:
type: Rackspace::AutoScale::ScalingPolicy
properties:
group: {get_resource: my_group}
name: dec1
change: -1
cooldown: 59
type: webhook
add1hook:
type: Rackspace::AutoScale::WebHook
properties:
policy: {get_resource: add1}
name: add1hookzzz
metadata:
is_cool: "true"
dec1hook:
type: Rackspace::AutoScale::WebHook
properties:
policy: {get_resource: dec1}
name: dec1hookzzz
metadata:
is_cool: "false"
outputs:
increment_url:
description: POST to this URL to add a server
value: {get_attr: [add1hook, capabilityUrl]}
decrement_url:
description: POST to this URL to remove a server
value: {get_attr: [dec1hook, capabilityUrl]}
public_ip:
description: Public IP of the load balancer
value: {get_attr: [my_lb, PublicIp]}