Documentation

aws_application_scaling_policy - Manage Application Auto Scaling Scaling Policies

New in version 2.5.

Synopsis

  • Creates, updates or removes a Scaling Policy

Requirements

The below requirements are needed on the host that executes this module.

  • boto
  • boto3
  • botocore
  • json
  • python >= 2.6

Parameters

Parameter Choices/Defaults Comments
aws_access_key
AWS access key. If not set then the value of the AWS_ACCESS_KEY_ID, AWS_ACCESS_KEY or EC2_ACCESS_KEY environment variable is used.

aliases: ec2_access_key, access_key
aws_secret_key
AWS secret key. If not set then the value of the AWS_SECRET_ACCESS_KEY, AWS_SECRET_KEY, or EC2_SECRET_KEY environment variable is used.

aliases: ec2_secret_key, secret_key
ec2_url
Url to use to connect to EC2 or your Eucalyptus cloud (by default the module will use EC2 endpoints). Ignored for modules where region is required. Must be specified for all other modules if region is not used. If not set then the value of the EC2_URL environment variable, if any, is used.
maximum_tasks
(added in 2.6)
The maximum value to scale to in response to a scale out event. This parameter is required if you are creating a first new policy for the specified service.
minimum_tasks
(added in 2.6)
The minimum value to scale to in response to a scale in event. This parameter is required if you are creating a first new policy for the specified service.
override_task_capacity
bool

(added in 2.6)
    Choices:
  • no ←
  • yes
Whether or not to override values of minimum and/or maximum tasks if it's already set.
policy_name
required
The name of the scaling policy.
policy_type
required
    Choices:
  • StepScaling
  • TargetTrackingScaling
The policy type.
profile
(added in 1.6)
Uses a boto profile. Only works with boto >= 2.24.0.
region
The AWS region to use. If not specified then the value of the AWS_REGION or EC2_REGION environment variable, if any, is used. See http://docs.aws.amazon.com/general/latest/gr/rande.html#ec2_region

aliases: aws_region, ec2_region
resource_id
required
The identifier of the resource associated with the scalable target.
scalable_dimension
required
    Choices:
  • ecs:service:DesiredCount
  • ec2:spot-fleet-request:TargetCapacity
  • elasticmapreduce:instancegroup:InstanceCount
  • appstream:fleet:DesiredCapacity
  • dynamodb:table:ReadCapacityUnits
  • dynamodb:table:WriteCapacityUnits
  • dynamodb:index:ReadCapacityUnits
  • dynamodb:index:WriteCapacityUnits
The scalable dimension associated with the scalable target.
security_token
(added in 1.6)
AWS STS security token. If not set then the value of the AWS_SECURITY_TOKEN or EC2_SECURITY_TOKEN environment variable is used.

aliases: access_token
service_namespace
required
    Choices:
  • ecs
  • elasticmapreduce
  • ec2
  • appstream
  • dynamodb
The namespace of the AWS service.
step_scaling_policy_configuration
A step scaling policy. This parameter is required if you are creating a policy and the policy type is StepScaling.
target_tracking_scaling_policy_configuration
A target tracking policy. This parameter is required if you are creating a new policy and the policy type is TargetTrackingScaling.
validate_certs
bool

(added in 1.5)
    Choices:
  • no
  • yes ←
When set to "no", SSL certificates will not be validated for boto versions >= 2.6.0.

Notes

Note

Examples

# Note: These examples do not set authentication details, see the AWS Guide for details.

# Create step scaling policy for ECS Service
- name: scaling_policy
  aws_application_scaling_policy:
    state: present
    policy_name: test_policy
    service_namespace: ecs
    resource_id: service/poc-pricing/test-as
    scalable_dimension: ecs:service:DesiredCount
    policy_type: StepScaling
    minimum_tasks: 1
    maximum_tasks: 6
    step_scaling_policy_configuration:
      AdjustmentType: ChangeInCapacity
      StepAdjustments:
        - MetricIntervalUpperBound: 123
          ScalingAdjustment: 2
        - MetricIntervalLowerBound: 123
          ScalingAdjustment: -2
      Cooldown: 123
      MetricAggregationType: Average

# Create target tracking scaling policy for ECS Service
- name: scaling_policy
  aws_application_scaling_policy:
    state: present
    policy_name: test_policy
    service_namespace: ecs
    resource_id: service/poc-pricing/test-as
    scalable_dimension: ecs:service:DesiredCount
    policy_type: TargetTrackingScaling
    minimum_tasks: 1
    maximum_tasks: 6
    target_tracking_scaling_policy_configuration:
      TargetValue: 60
      PredefinedMetricSpecification:
        PredefinedMetricType: ECSServiceAverageCPUUtilization
      ScaleOutCooldown: 60
      ScaleInCooldown: 60

# Remove scalable target for ECS Service
- name: scaling_policy
  aws_application_scaling_policy:
    state: absent
    policy_name: test_policy
    policy_type: StepScaling
    service_namespace: ecs
    resource_id: service/cluster-name/service-name
    scalable_dimension: ecs:service:DesiredCount

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key Returned Description
alarms
complex
when state present
List of the CloudWatch alarms associated with the scaling policy

  alarm_arn
string
when state present
The Amazon Resource Name (ARN) of the alarm

  alarm_name
string
when state present
The name of the alarm

creation_time
string
when state present
The Unix timestamp for when the scalable target was created.

Sample:
2017-09-28T08:22:51.881000-03:00
max_capacity
int
when state present
The maximum value to scale to in response to a scale out event. Required if state is present.

Sample:
2
min_capacity
int
when state present
The minimum value to scale to in response to a scale in event. Required if state is present.

Sample:
1
policy_arn
string
when state present
The Amazon Resource Name (ARN) of the scaling policy..

policy_name
string
when state present
The name of the scaling policy.

policy_type
string
when state present
The policy type.

resource_id
string
when state present
The identifier of the resource associated with the scalable target.

Sample:
service/cluster-name/service-name
role_arn
string
when state present
The ARN of an IAM role that allows Application Auto Scaling to modify the scalable target on your behalf. Required if state is present.

Sample:
arn:aws:iam::123456789123:role/roleName
scalable_dimension
string
when state present
The scalable dimension associated with the scalable target.

Sample:
ecs:service:DesiredCount
service_namespace
string
when state present
The namespace of the AWS service.

Sample:
ecs
step_scaling_policy_configuration
complex
when state present and the policy type is StepScaling
The step scaling policy.

  metric_aggregation_type
string
when state present and the policy type is StepScaling
The aggregation type for the CloudWatch metrics

Sample:
Average, Minimum, Maximum
  cooldown
int
when state present and the policy type is StepScaling
The amount of time, in seconds, after a scaling activity completes where previous trigger-related scaling activities can influence future scaling events

Sample:
60
  adjustment_type
string
when state present and the policy type is StepScaling
The adjustment type

Sample:
ChangeInCapacity, PercentChangeInCapacity, ExactCapacity
  step_adjustments
list of complex
when state present and the policy type is StepScaling
A set of adjustments that enable you to scale based on the size of the alarm breach

target_tracking_scaling_policy_configuration
complex
when state present and the policy type is TargetTrackingScaling
The target tracking policy.

  predefined_metric_specification
complex
when state present and the policy type is TargetTrackingScaling
A predefined metric

    resource_label
string
when metric type is ALBRequestCountPerTarget
Identifies the resource associated with the metric type

    predefined_metric_type
string
when state present and the policy type is TargetTrackingScaling
The metric type

Sample:
ECSServiceAverageCPUUtilization, ECSServiceAverageMemoryUtilization
  scale_out_cooldown
int
when state present and the policy type is TargetTrackingScaling
The amount of time, in seconds, after a scale out activity completes before another scale out activity can start

Sample:
60
  scale_in_cooldown
int
when state present and the policy type is TargetTrackingScaling
The amount of time, in seconds, after a scale in activity completes before another scale in activity can start

Sample:
60
  target_value
int
when state present and the policy type is TargetTrackingScaling
The target value for the metric

Sample:
70


Status

This module is flagged as preview which means that it is not guaranteed to have a backwards compatible interface.

Maintenance

This module is flagged as community which means that it is maintained by the Ansible Community. See Module Maintenance & Support for more info.

For a list of other modules that are also maintained by the Ansible Community, see here.

Author

  • Gustavo Maia(@gurumaia)
  • Chen Leibovich(@chenl87)

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