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heat_template_version: 2015-10-15
description: >
Example of using monasca resources for auto-scale testing. In this template,
sample scale-group is created with given nova instance to auto-scale
when cpu utilization varies between 15 to 50 percent for 3 times consequently.
parameters:
flavor:
type: string
description: Flavor for the instances to be created
default: m1.nano
image:
type: string
description: Name or ID of the image to use for the instances.
resources:
group:
type: OS::Heat::AutoScalingGroup
properties:
cooldown: 60
desired_capacity: 2
max_size: 5
min_size: 1
resource:
type: OS::Nova::Server
properties:
flavor: { get_param: flavor }
image: { get_param: image }
metadata: {"scale_group": {get_param: "OS::stack_id"}}
networks:
- network: private
security_groups:
- testvm
scale_up_policy:
type: OS::Heat::ScalingPolicy
properties:
adjustment_type: change_in_capacity
auto_scaling_group_id: { get_resource: group }
cooldown: 60
scaling_adjustment: 1
scale_down_policy:
type: OS::Heat::ScalingPolicy
properties:
adjustment_type: change_in_capacity
auto_scaling_group_id: { get_resource: group }
cooldown: 60
scaling_adjustment: -1
up_notification:
type: OS::Monasca::Notification
properties:
type: webhook
address: {get_attr: [scale_up_policy, alarm_url]}
down_notification:
type: OS::Monasca::Notification
properties:
type: webhook
address: {get_attr: [scale_down_policy, alarm_url]}
cpu_alarm_high:
type: OS::Monasca::AlarmDefinition
properties:
name: CPU utilization beyond 50 percent
description: CPU utilization reached beyond 50 percent
expression:
str_replace:
template: avg(cpu.utilization_perc{scale_group=scale_group_id}) > 50 times 3
params:
scale_group_id: {get_param: "OS::stack_id"}
severity: high
alarm_actions:
- {get_resource: up_notification }
cpu_alarm_low:
type: OS::Monasca::AlarmDefinition
properties:
name: CPU utilization less than 15 percent
description: CPU utilization less than 15 percent
expression:
str_replace:
template: avg(cpu.utilization_perc{scale_group=scale_group_id}) < 15 times 3
params:
scale_group_id: {get_param: "OS::stack_id"}
severity: low
alarm_actions:
- {get_resource: down_notification}
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