aws_application_scaling_policy - Manage Application Auto Scaling Scaling Policies¶

New in version 2.5.

Synopsis
- Requirements
Parameters
Notes
Examples
Return Values
Status
- Author

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 (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 (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

for details of the parameters and returns see http://boto3.readthedocs.io/en/latest/reference/services/application-autoscaling.html#ApplicationAutoScaling.Client.put_scaling_policy
If parameters are not set within the module, the following environment variables can be used in decreasing order of precedence AWS_URL or EC2_URL, AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY or EC2_ACCESS_KEY, AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY or EC2_SECRET_KEY, AWS_SECURITY_TOKEN or EC2_SECURITY_TOKEN, AWS_REGION or EC2_REGION
Ansible uses the boto configuration file (typically ~/.boto) if no credentials are provided. See http://boto.readthedocs.org/en/latest/boto_config_tut.html
AWS_REGION or EC2_REGION can be typically be used to specify the AWS region, when required, but this can also be configured in the boto config file

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.

Author ¶

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

Hint

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