community.aws.autoscaling_policy module – Create or delete AWS scaling policies for Autoscaling groups

Note

This module is part of the community.aws collection (version 5.2.0).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.aws. You need further requirements to be able to use this module, see Requirements for details.

To use it in a playbook, specify: community.aws.autoscaling_policy.

New in community.aws 1.0.0

Synopsis

  • Can create or delete scaling policies for autoscaling groups.

  • Referenced autoscaling groups must already exist.

  • Prior to release 5.0.0 this module was called community.aws.ec2_scaling_policy. The usage did not change.

Requirements

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

  • python >= 3.6

  • boto3 >= 1.18.0

  • botocore >= 1.21.0

Parameters

Parameter

Comments

access_key

aliases: aws_access_key_id, aws_access_key, ec2_access_key

string

AWS access key ID.

See the AWS documentation for more information about access tokens https://docs.aws.amazon.com/general/latest/gr/aws-sec-cred-types.html#access-keys-and-secret-access-keys.

The AWS_ACCESS_KEY_ID, AWS_ACCESS_KEY or EC2_ACCESS_KEY environment variables may also be used in decreasing order of preference.

The aws_access_key and profile options are mutually exclusive.

The aws_access_key_id alias was added in release 5.1.0 for consistency with the AWS botocore SDK.

The ec2_access_key alias has been deprecated and will be removed in a release after 2024-12-01.

Support for the EC2_ACCESS_KEY environment variable has been deprecated and will be removed in a release after 2024-12-01.

adjustment_type

string

The type of change in capacity of the autoscaling group.

Required if state is present.

Choices:

  • "ChangeInCapacity"

  • "ExactCapacity"

  • "PercentChangeInCapacity"

asg_name

string

Name of the associated autoscaling group.

Required if state is present.

aws_ca_bundle

path

The location of a CA Bundle to use when validating SSL certificates.

The AWS_CA_BUNDLE environment variable may also be used.

aws_config

dictionary

A dictionary to modify the botocore configuration.

Parameters can be found in the AWS documentation https://botocore.amazonaws.com/v1/documentation/api/latest/reference/config.html#botocore.config.Config.

cooldown

integer

The minimum period of time (in seconds) between which autoscaling actions can take place.

Only used when policy_type is SimpleScaling.

debug_botocore_endpoint_logs

boolean

Use a botocore.endpoint logger to parse the unique (rather than total) "resource:action" API calls made during a task, outputing the set to the resource_actions key in the task results. Use the aws_resource_action callback to output to total list made during a playbook.

The ANSIBLE_DEBUG_BOTOCORE_LOGS environment variable may also be used.

Choices:

  • false ← (default)

  • true

endpoint_url

aliases: ec2_url, aws_endpoint_url, s3_url

string

URL to connect to instead of the default AWS endpoints. While this can be used to connection to other AWS-compatible services the amazon.aws and community.aws collections are only tested against AWS.

The AWS_URL or EC2_URL environment variables may also be used, in decreasing order of preference.

The ec2_url and s3_url aliases have been deprecated and will be removed in a release after 2024-12-01.

Support for the EC2_URL environment variable has been deprecated and will be removed in a release after 2024-12-01.

estimated_instance_warmup

integer

The estimated time, in seconds, until a newly launched instance can contribute to the CloudWatch metrics.

metric_aggregation

string

The aggregation type for the CloudWatch metrics.

Only used when policy_type is not SimpleScaling.

Choices:

  • "Minimum"

  • "Maximum"

  • "Average" ← (default)

min_adjustment_step

integer

Minimum amount of adjustment when policy is triggered.

Only used when adjustment_type is PercentChangeInCapacity.

name

string / required

Unique name for the scaling policy.

policy_type

string

Auto scaling adjustment policy.

Choices:

  • "StepScaling"

  • "SimpleScaling" ← (default)

  • "TargetTrackingScaling"

profile

aliases: aws_profile

string

A named AWS profile to use for authentication.

See the AWS documentation for more information about named profiles https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html.

The AWS_PROFILE environment variable may also be used.

The profile option is mutually exclusive with the aws_access_key, aws_secret_key and security_token options.

region

aliases: aws_region, ec2_region

string

The AWS region to use.

For global services such as IAM, Route53 and CloudFront, region is ignored.

The AWS_REGION or EC2_REGION environment variables may also be used.

See the Amazon AWS documentation for more information http://docs.aws.amazon.com/general/latest/gr/rande.html#ec2_region.

The ec2_region alias has been deprecated and will be removed in a release after 2024-12-01

Support for the EC2_REGION environment variable has been deprecated and will be removed in a release after 2024-12-01.

scaling_adjustment

integer

The amount by which the autoscaling group is adjusted by the policy.

A negative number has the effect of scaling down the ASG.

Units are numbers of instances for ExactCapacity or ChangeInCapacity or percent of existing instances for PercentChangeInCapacity.

Required when policy_type is SimpleScaling.

secret_key

aliases: aws_secret_access_key, aws_secret_key, ec2_secret_key

string

AWS secret access key.

See the AWS documentation for more information about access tokens https://docs.aws.amazon.com/general/latest/gr/aws-sec-cred-types.html#access-keys-and-secret-access-keys.

The AWS_SECRET_ACCESS_KEY, AWS_SECRET_KEY, or EC2_SECRET_KEY environment variables may also be used in decreasing order of preference.

The secret_key and profile options are mutually exclusive.

The aws_secret_access_key alias was added in release 5.1.0 for consistency with the AWS botocore SDK.

The ec2_secret_key alias has been deprecated and will be removed in a release after 2024-12-01.

Support for the EC2_SECRET_KEY environment variable has been deprecated and will be removed in a release after 2024-12-01.

session_token

aliases: aws_session_token, security_token, aws_security_token, access_token

string

AWS STS session token for use with temporary credentials.

See the AWS documentation for more information about access tokens https://docs.aws.amazon.com/general/latest/gr/aws-sec-cred-types.html#access-keys-and-secret-access-keys.

The AWS_SESSION_TOKEN, AWS_SECURITY_TOKEN or EC2_SECURITY_TOKEN environment variables may also be used in decreasing order of preference.

The security_token and profile options are mutually exclusive.

Aliases aws_session_token and session_token were added in release 3.2.0, with the parameter being renamed from security_token to session_token in release 6.0.0.

The security_token, aws_security_token, and access_token aliases have been deprecated and will be removed in a release after 2024-12-01.

Support for the EC2_SECRET_KEY and AWS_SECURITY_TOKEN environment variables has been deprecated and will be removed in a release after 2024-12-01.

state

string

Register or deregister the policy.

Choices:

  • "present" ← (default)

  • "absent"

step_adjustments

list / elements=dictionary

List of dicts containing lower_bound, upper_bound and scaling_adjustment.

Intervals must not overlap or have a gap between them.

At most, one item can have an undefined lower_bound. If any item has a negative lower_bound, then there must be a step adjustment with an undefined lower_bound.

At most, one item can have an undefined upper_bound. If any item has a positive upper_bound, then there must be a step adjustment with an undefined upper_bound.

The bounds are the amount over the alarm threshold at which the adjustment will trigger. This means that for an alarm threshold of 50, triggering at 75 requires a lower bound of 25. See http://docs.aws.amazon.com/AutoScaling/latest/APIReference/API_StepAdjustment.html.

lower_bound

integer

The lower bound for the difference between the alarm threshold and the CloudWatch metric.

scaling_adjustment

integer / required

The amount by which to scale.

upper_bound

integer

The upper bound for the difference between the alarm threshold and the CloudWatch metric.

target_tracking_config

dictionary

added in community.aws 4.1.0

Allows you to specify a target_tracking_config for autoscaling policies in AWS.

target_tracking_config can accept nested dicts for customized_metric_spec or predefined_metric_spec. Each specification aligns with their boto3 equivalent.

Required when TargetTrackingScaling policy is specified.

customized_metric_spec

dictionary

Specify a dict will be passed in as a call for TargetTrackingConfiguration.

dimensions

list / elements=dictionary

The dimensions of the metric. The element of the list should be a dict.

metric_name

string / required

The name of the metric.

namespace

string / required

The namespace of the metric.

statistic

string / required

The statistic of the metric.

Choices:

  • "Average"

  • "Minimum"

  • "Maximum"

  • "SampleCount"

  • "Sum"

unit

string

The unit of the metric. Reference AmazonCloudWatch API for valid Units.

disable_scalein

boolean

Indicate whether scaling in by the target tracking scaling policy is disabled.

Choices:

  • false

  • true

predefined_metric_spec

dictionary

Specify a dict will be passed in as a call for TargetTrackingConfiguration.

predefined_metric_type

string / required

Required if predefined_metric_spec is used.

Choices:

  • "ASGAverageCPUUtilization"

  • "ASGAverageNetworkIn"

  • "ASGAverageNetworkOut"

  • "ALBRequestCountPerTarget"

resource_label

string

Uniquely identifies a specific ALB target group from which to determine the average request count served by your Auto Scaling group.

You can’t specify a resource label unless the target group is attached to the Auto Scaling group.

target_value

float / required

Specify a float number for target utilization.

Required when target_tracking_config is specified.

validate_certs

boolean

When set to false, SSL certificates will not be validated for communication with the AWS APIs.

Setting validate_certs=false is strongly discouraged, as an alternative, consider setting aws_ca_bundle instead.

Choices:

  • false

  • true ← (default)

Notes

Note

  • Caution: For modules, environment variables and configuration files are read from the Ansible ‘host’ context and not the ‘controller’ context. As such, files may need to be explicitly copied to the ‘host’. For lookup and connection plugins, environment variables and configuration files are read from the Ansible ‘controller’ context and not the ‘host’ context.

  • The AWS SDK (boto3) that Ansible uses may also read defaults for credentials and other settings, such as the region, from its configuration files in the Ansible ‘host’ context (typically ~/.aws/credentials). See https://boto3.amazonaws.com/v1/documentation/api/latest/guide/credentials.html for more information.

Examples

- name: Simple Scale Down policy
  community.aws.autoscaling_policy:
    state: present
    region: US-XXX
    name: "scaledown-policy"
    adjustment_type: "ChangeInCapacity"
    asg_name: "application-asg"
    scaling_adjustment: -1
    min_adjustment_step: 1
    cooldown: 300

# For an alarm with a breach threshold of 20, the
# following creates a stepped policy:
# From 20-40 (0-20 above threshold), increase by 50% of existing capacity
# From 41-infinity, increase by 100% of existing capacity
- community.aws.autoscaling_policy:
    state: present
    region: US-XXX
    name: "step-scale-up-policy"
    policy_type: StepScaling
    metric_aggregation: Maximum
    step_adjustments:
      - upper_bound: 20
        scaling_adjustment: 50
      - lower_bound: 20
        scaling_adjustment: 100
    adjustment_type: "PercentChangeInCapacity"
    asg_name: "application-asg"

- name: create TargetTracking predefined policy
  ec2_scaling_policy:
    name: "predefined-policy-1"
    policy_type: TargetTrackingScaling
    target_tracking_config:
      predefined_metric_spec:
        predefined_metric_type: ASGAverageCPUUtilization
      target_value: 98.0
    asg_name: "asg-test-1"
  register: result

- name: create TargetTracking predefined policy with resource_label
  ec2_scaling_policy:
    name: "predefined-policy-1"
    policy_type: TargetTrackingScaling
    target_tracking_config:
      predefined_metric_spec:
        predefined_metric_type: ALBRequestCountPerTarget
        resource_label: app/my-alb/778d41231d141a0f/targetgroup/my-alb-target-group/942f017f100becff
      target_value: 98.0
    asg_name: "asg-test-1"
  register: result

- name: create TargetTrackingScaling custom policy
  ec2_scaling_policy:
    name: "custom-policy-1"
    policy_type: TargetTrackingScaling
    target_tracking_config:
      customized_metric_spec:
        metric_name: metric_1
        namespace: namespace_1
        statistic: Minimum
        unit: Gigabits
        dimensions: [{'Name': 'dimension1', 'Value': 'value1'}]
      disable_scalein: true
      target_value: 98.0
    asg_name: asg-test-1
  register: result

Return Values

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

Key

Description

adjustment_type

string

Scaling policy adjustment type.

Returned: always

Sample: "PercentChangeInCapacity"

alarms

complex

Cloudwatch alarms related to the policy.

Returned: always

alarm_arn

string

ARN of the Cloudwatch alarm.

Returned: always

Sample: "arn:aws:cloudwatch:us-east-2:1234567890:alarm:cpu-very-high"

alarm_name

string

Name of the Cloudwatch alarm.

Returned: always

Sample: "cpu-very-high"

arn

string

ARN of the scaling policy. Provided for backward compatibility, value is the same as policy_arn.

Returned: always

Sample: "arn:aws:autoscaling:us-east-2:123456789012:scalingPolicy:59e37526-bd27-42cf-adca-5cd3d90bc3b9:autoScalingGroupName/app-asg:policyName/app-policy"

as_name

string

Auto Scaling Group name. Provided for backward compatibility, value is the same as auto_scaling_group_name.

Returned: always

Sample: "app-asg"

auto_scaling_group_name

string

Name of Auto Scaling Group.

Returned: always

Sample: "app-asg"

metric_aggregation_type

string

Method used to aggregate metrics.

Returned: when policy_type is StepScaling

Sample: "Maximum"

name

string

Name of the scaling policy. Provided for backward compatibility, value is the same as policy_name.

Returned: always

Sample: "app-policy"

policy_arn

string

ARN of scaling policy.

Returned: always

Sample: "arn:aws:autoscaling:us-east-2:123456789012:scalingPolicy:59e37526-bd27-42cf-adca-5cd3d90bc3b9:autoScalingGroupName/app-asg:policyName/app-policy"

policy_name

string

Name of scaling policy.

Returned: always

Sample: "app-policy"

policy_type

string

Type of auto scaling policy.

Returned: always

Sample: "StepScaling"

scaling_adjustment

integer

Adjustment to make when alarm is triggered.

Returned: When policy_type is SimpleScaling

Sample: 1

step_adjustments

complex

List of step adjustments.

Returned: always

metric_interval_lower_bound

float

Lower bound for metric interval.

Returned: if step has a lower bound

Sample: 20.0

metric_interval_upper_bound

float

Upper bound for metric interval.

Returned: if step has an upper bound

Sample: 40.0

scaling_adjustment

integer

Adjustment to make if this step is reached.

Returned: always

Sample: 50

Authors

  • Zacharie Eakin (@zeekin)

  • Will Thames (@willthames)