Class: Aws::AutoScaling::AutoScalingGroup

Inherits:
Object
  • Object
show all
Defined in:
gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb

Defined Under Namespace

Classes: Collection

Read-Only Attributes collapse

Actions collapse

Associations collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, options = {}) ⇒ AutoScalingGroup #initialize(options = {}) ⇒ AutoScalingGroup

Returns a new instance of AutoScalingGroup.

Overloads:

  • #initialize(name, options = {}) ⇒ AutoScalingGroup

    Parameters:

    • name (String)

    Options Hash (options):

  • #initialize(options = {}) ⇒ AutoScalingGroup

    Options Hash (options):

    • :name (required, String)
    • :client (Client) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 22

def initialize(*args)
  options = Hash === args.last ? args.pop.dup : {}
  @name = extract_name(args, options)
  @data = options.delete(:data)
  @client = options.delete(:client) || Client.new(options)
  @waiter_block_warned = false
end

Instance Method Details

#activities(options = {}) ⇒ Activity::Collection

Examples:

Request syntax with placeholder values


activities = auto_scaling_group.activities({
  activity_ids: ["XmlString"],
  include_deleted_groups: false,
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :activity_ids (Array<String>) —

    The activity IDs of the desired scaling activities. If you omit this property, all activities for the past six weeks are described. If unknown activities are requested, they are ignored with no error. If you specify an Auto Scaling group, the results are limited to that group.

    Array Members: Maximum number of 50 IDs.

  • :include_deleted_groups (Boolean) —

    Indicates whether to include scaling activity from deleted Auto Scaling groups.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1499

def activities(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(auto_scaling_group_name: @name)
    resp = Aws::Plugins::UserAgent.feature('resource') do
      @client.describe_scaling_activities(options)
    end
    resp.each_page do |page|
      batch = []
      page.data.activities.each do |a|
        batch << Activity.new(
          id: a.activity_id,
          data: a,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  Activity::Collection.new(batches)
end

#attach_instances(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


auto_scaling_group.attach_instances({
  instance_ids: ["XmlStringMaxLen19"],
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :instance_ids (Array<String>) —

    The IDs of the instances. You can specify up to 20 instances.

Returns:

  • (EmptyStructure) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 460

def attach_instances(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.attach_instances(options)
  end
  resp.data
end

#auto_scaling_group_arn ⇒ String

The Amazon Resource Name (ARN) of the Auto Scaling group.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 40

def auto_scaling_group_arn
  data[:auto_scaling_group_arn]
end

#availability_zones ⇒ Array<String>

One or more Availability Zones for the group.

Returns:

  • (Array<String>) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 95

def availability_zones
  data[:availability_zones]
end

#capacity_rebalance ⇒ Boolean

Indicates whether Capacity Rebalancing is enabled.

Returns:

  • (Boolean) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 194

def capacity_rebalance
  data[:capacity_rebalance]
end

#client ⇒ Client

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 245

def client
  @client
end

#context ⇒ String

Reserved.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 212

def context
  data[:context]
end

#created_time ⇒ Time

The date and time the group was created.

Returns:

  • (Time) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 126

def created_time
  data[:created_time]
end

#data ⇒ Types::AutoScalingGroup

Returns the data for this Aws::AutoScaling::AutoScalingGroup. Calls Client#describe_auto_scaling_groups if #data_loaded? is false.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 267

def data
  load unless @data
  @data
end

#data_loaded? ⇒ Boolean

Returns true if this resource is loaded. Accessing attributes or #data on an unloaded resource will trigger a call to #load.

Returns:

  • (Boolean) —

    Returns true if this resource is loaded. Accessing attributes or #data on an unloaded resource will trigger a call to #load.



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 275

def data_loaded?
  !!@data
end

#default_cooldown ⇒ Integer

The duration of the default cooldown period, in seconds.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 89

def default_cooldown
  data[:default_cooldown]
end

#default_instance_warmup ⇒ Integer

The duration of the default instance warmup, in seconds.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 226

def default_instance_warmup
  data[:default_instance_warmup]
end

#delete(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


auto_scaling_group.delete({
  force_delete: false,
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :force_delete (Boolean) —

    Specifies that the group is to be deleted along with all instances associated with the group, without waiting for all instances to be terminated. This action also deletes any outstanding lifecycle actions associated with the group.

Returns:

  • (EmptyStructure) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 480

def delete(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.delete_auto_scaling_group(options)
  end
  resp.data
end

#desired_capacity ⇒ Integer

The desired size of the group.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 76

def desired_capacity
  data[:desired_capacity]
end

#desired_capacity_type ⇒ String

The unit of measurement for the value specified for desired capacity. Amazon EC2 Auto Scaling supports DesiredCapacityType for attribute-based instance type selection only.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 220

def desired_capacity_type
  data[:desired_capacity_type]
end

#detach_instances(options = {}) ⇒ Activity::Collection

Examples:

Request syntax with placeholder values


activity = auto_scaling_group.detach_instances({
  instance_ids: ["XmlStringMaxLen19"],
  should_decrement_desired_capacity: false, # required
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :instance_ids (Array<String>) —

    The IDs of the instances. You can specify up to 20 instances.

  • :should_decrement_desired_capacity (required, Boolean) —

    Indicates whether the Auto Scaling group decrements the desired capacity value by the number of instances detached.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 501

def detach_instances(options = {})
  batch = []
  options = options.merge(auto_scaling_group_name: @name)
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.detach_instances(options)
  end
  resp.data.activities.each do |a|
    batch << Activity.new(
      id: a.activity_id,
      data: a,
      client: @client
    )
  end
  Activity::Collection.new([batch], size: batch.size)
end

#disable_metrics_collection(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


auto_scaling_group.disable_metrics_collection({
  metrics: ["XmlStringMaxLen255"],
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :metrics (Array<String>) —

    Identifies the metrics to disable.

    You can specify one or more of the following metrics:

    • GroupMinSize

    • GroupMaxSize

    • GroupDesiredCapacity

    • GroupInServiceInstances

    • GroupPendingInstances

    • GroupStandbyInstances

    • GroupTerminatingInstances

    • GroupTotalInstances

    • GroupInServiceCapacity

    • GroupPendingCapacity

    • GroupStandbyCapacity

    • GroupTerminatingCapacity

    • GroupTotalCapacity

    • WarmPoolDesiredCapacity

    • WarmPoolWarmedCapacity

    • WarmPoolPendingCapacity

    • WarmPoolTerminatingCapacity

    • WarmPoolTotalCapacity

    • GroupAndWarmPoolDesiredCapacity

    • GroupAndWarmPoolTotalCapacity

    If you omit this property, all metrics are disabled.

    For more information, see Auto Scaling group metrics in the Amazon EC2 Auto Scaling User Guide.

Returns:

  • (EmptyStructure) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 577

def disable_metrics_collection(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.disable_metrics_collection(options)
  end
  resp.data
end

#enable_metrics_collection(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


auto_scaling_group.enable_metrics_collection({
  metrics: ["XmlStringMaxLen255"],
  granularity: "XmlStringMaxLen255", # required
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :metrics (Array<String>) —

    Identifies the metrics to enable.

    You can specify one or more of the following metrics:

    • GroupMinSize

    • GroupMaxSize

    • GroupDesiredCapacity

    • GroupInServiceInstances

    • GroupPendingInstances

    • GroupStandbyInstances

    • GroupTerminatingInstances

    • GroupTotalInstances

    • GroupInServiceCapacity

    • GroupPendingCapacity

    • GroupStandbyCapacity

    • GroupTerminatingCapacity

    • GroupTotalCapacity

    • WarmPoolDesiredCapacity

    • WarmPoolWarmedCapacity

    • WarmPoolPendingCapacity

    • WarmPoolTerminatingCapacity

    • WarmPoolTotalCapacity

    • GroupAndWarmPoolDesiredCapacity

    • GroupAndWarmPoolTotalCapacity

    If you specify Granularity and don't specify any metrics, all metrics are enabled.

    For more information, see Auto Scaling group metrics in the Amazon EC2 Auto Scaling User Guide.

  • :granularity (required, String) —

    The frequency at which Amazon EC2 Auto Scaling sends aggregated data to CloudWatch. The only valid value is 1Minute.

Returns:

  • (EmptyStructure) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 650

def enable_metrics_collection(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.enable_metrics_collection(options)
  end
  resp.data
end

#enabled_metrics ⇒ Array<Types::EnabledMetric>

The metrics enabled for the group.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 151

def enabled_metrics
  data[:enabled_metrics]
end

#exists?(options = {}) ⇒ Boolean

Returns true if the AutoScalingGroup exists.

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Returns:

  • (Boolean) —

    Returns true if the AutoScalingGroup exists.



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 282

def exists?(options = {})
  begin
    wait_until_exists(options.merge(max_attempts: 1))
    true
  rescue Aws::Waiters::Errors::UnexpectedError => e
    raise e.error
  rescue Aws::Waiters::Errors::WaiterFailed
    false
  end
end

#health_check_grace_period ⇒ Integer

The duration of the health check grace period, in seconds.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 120

def health_check_grace_period
  data[:health_check_grace_period]
end

#health_check_type ⇒ String

A comma-separated value string of one or more health check types.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 114

def health_check_type
  data[:health_check_type]
end

#instance_maintenance_policy ⇒ Types::InstanceMaintenancePolicy

An instance maintenance policy.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 238

def instance_maintenance_policy
  data[:instance_maintenance_policy]
end

#instances ⇒ Instance::Collection

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1521

def instances
  batch = []
  data[:instances].each do |d|
    batch << Instance.new(
      group_name: @name,
      id: d[:instance_id],
      data: d,
      client: @client
    )
  end
  Instance::Collection.new([batch], size: batch.size)
end

#launch_configuration ⇒ LaunchConfiguration?

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1535

def launch_configuration
  if data[:launch_configuration_name]
    LaunchConfiguration.new(
      name: data[:launch_configuration_name],
      client: @client
    )
  else
    nil
  end
end

#launch_configuration_name ⇒ String

The name of the associated launch configuration.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 46

def launch_configuration_name
  data[:launch_configuration_name]
end

#launch_template ⇒ Types::LaunchTemplateSpecification

The launch template for the group.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 52

def launch_template
  data[:launch_template]
end

#lifecycle_hook(name) ⇒ LifecycleHook

Parameters:

  • name (String)

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1548

def lifecycle_hook(name)
  LifecycleHook.new(
    group_name: @name,
    name: name,
    client: @client
  )
end

#lifecycle_hooks(options = {}) ⇒ LifecycleHook::Collection

Examples:

Request syntax with placeholder values


lifecycle_hooks = auto_scaling_group.lifecycle_hooks({
  lifecycle_hook_names: ["AsciiStringMaxLen255"],
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :lifecycle_hook_names (Array<String>) —

    The names of one or more lifecycle hooks. If you omit this property, all lifecycle hooks are described.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1566

def lifecycle_hooks(options = {})
  batches = Enumerator.new do |y|
    batch = []
    options = options.merge(auto_scaling_group_name: @name)
    resp = Aws::Plugins::UserAgent.feature('resource') do
      @client.describe_lifecycle_hooks(options)
    end
    resp.data.lifecycle_hooks.each do |l|
      batch << LifecycleHook.new(
        group_name: l.auto_scaling_group_name,
        name: l.lifecycle_hook_name,
        data: l,
        client: @client
      )
    end
    y.yield(batch)
  end
  LifecycleHook::Collection.new(batches)
end

#load ⇒ self Also known as: reload

Loads, or reloads #data for the current Aws::AutoScaling::AutoScalingGroup. Returns self making it possible to chain methods.

auto_scaling_group.reload.data

Returns:

  • (self) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 255

def load
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.describe_auto_scaling_groups(auto_scaling_group_names: [@name])
  end
  @data = resp.auto_scaling_groups[0]
  self
end

#load_balancer(name) ⇒ LoadBalancer

Parameters:

  • name (String)

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1588

def load_balancer(name)
  LoadBalancer.new(
    group_name: @name,
    name: name,
    client: @client
  )
end

#load_balancer_names ⇒ Array<String>

One or more load balancers associated with the group.

Returns:

  • (Array<String>) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 101

def load_balancer_names
  data[:load_balancer_names]
end

#load_balancers(options = {}) ⇒ LoadBalancer::Collection

Examples:

Request syntax with placeholder values


auto_scaling_group.load_balancers()

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1601

def load_balancers(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(auto_scaling_group_name: @name)
    resp = Aws::Plugins::UserAgent.feature('resource') do
      @client.describe_load_balancers(options)
    end
    resp.each_page do |page|
      batch = []
      page.data.load_balancers.each do |l|
        batch << LoadBalancer.new(
          group_name: @name,
          name: l.load_balancer_name,
          data: l,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  LoadBalancer::Collection.new(batches)
end

#max_instance_lifetime ⇒ Integer

The maximum amount of time, in seconds, that an instance can be in service.

Valid Range: Minimum value of 0.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 188

def max_instance_lifetime
  data[:max_instance_lifetime]
end

#max_size ⇒ Integer

The maximum size of the group.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 70

def max_size
  data[:max_size]
end

#min_size ⇒ Integer

The minimum size of the group.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 64

def min_size
  data[:min_size]
end

#mixed_instances_policy ⇒ Types::MixedInstancesPolicy

The mixed instances policy for the group.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 58

def mixed_instances_policy
  data[:mixed_instances_policy]
end

#name ⇒ String Also known as: auto_scaling_group_name

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 33

def name
  @name
end

#new_instances_protected_from_scale_in ⇒ Boolean

Indicates whether newly launched instances are protected from termination by Amazon EC2 Auto Scaling when scaling in.

Returns:

  • (Boolean) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 171

def new_instances_protected_from_scale_in
  data[:new_instances_protected_from_scale_in]
end

#notification_configurations(options = {}) ⇒ NotificationConfiguration::Collection

Examples:

Request syntax with placeholder values


auto_scaling_group.notification_configurations()

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1628

def notification_configurations(options = {})
  batches = Enumerator.new do |y|
    options = Aws::Util.deep_merge(options, auto_scaling_group_names: [@name])
    resp = Aws::Plugins::UserAgent.feature('resource') do
      @client.describe_notification_configurations(options)
    end
    resp.each_page do |page|
      batch = []
      page.data.notification_configurations.each do |n|
        batch << NotificationConfiguration.new(
          group_name: n.auto_scaling_group_name,
          type: n.notification_type,
          topic_arn: n.topic_arn,
          data: n,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  NotificationConfiguration::Collection.new(batches)
end

#placement_group ⇒ String

The name of the placement group into which to launch your instances, if any.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 139

def placement_group
  data[:placement_group]
end

#policies(options = {}) ⇒ ScalingPolicy::Collection

Examples:

Request syntax with placeholder values


policies = auto_scaling_group.policies({
  policy_names: ["ResourceName"],
  policy_types: ["XmlStringMaxLen64"],
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :policy_names (Array<String>) —

    The names of one or more policies. If you omit this property, all policies are described. If a group name is provided, the results are limited to that group. If you specify an unknown policy name, it is ignored with no error.

    Array Members: Maximum number of 50 items.

  • :policy_types (Array<String>) —

    One or more policy types. The valid values are SimpleScaling, StepScaling, TargetTrackingScaling, and PredictiveScaling.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1669

def policies(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(auto_scaling_group_name: @name)
    resp = Aws::Plugins::UserAgent.feature('resource') do
      @client.describe_policies(options)
    end
    resp.each_page do |page|
      batch = []
      page.data.scaling_policies.each do |s|
        batch << ScalingPolicy.new(
          name: s.policy_name,
          data: s,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  ScalingPolicy::Collection.new(batches)
end

#predicted_capacity ⇒ Integer

The predicted capacity of the group when it has a predictive scaling policy.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 83

def predicted_capacity
  data[:predicted_capacity]
end

#put_scaling_policy(options = {}) ⇒ ScalingPolicy

Examples:

Request syntax with placeholder values


scalingpolicy = auto_scaling_group.put_scaling_policy({
  policy_name: "XmlStringMaxLen255", # required
  policy_type: "XmlStringMaxLen64",
  adjustment_type: "XmlStringMaxLen255",
  min_adjustment_step: 1,
  min_adjustment_magnitude: 1,
  scaling_adjustment: 1,
  cooldown: 1,
  metric_aggregation_type: "XmlStringMaxLen32",
  step_adjustments: [
    {
      metric_interval_lower_bound: 1.0,
      metric_interval_upper_bound: 1.0,
      scaling_adjustment: 1, # required
    },
  ],
  estimated_instance_warmup: 1,
  target_tracking_configuration: {
    predefined_metric_specification: {
      predefined_metric_type: "ASGAverageCPUUtilization", # required, accepts ASGAverageCPUUtilization, ASGAverageNetworkIn, ASGAverageNetworkOut, ALBRequestCountPerTarget
      resource_label: "XmlStringMaxLen1023",
    },
    customized_metric_specification: {
      metric_name: "MetricName",
      namespace: "MetricNamespace",
      dimensions: [
        {
          name: "MetricDimensionName", # required
          value: "MetricDimensionValue", # required
        },
      ],
      statistic: "Average", # accepts Average, Minimum, Maximum, SampleCount, Sum
      unit: "MetricUnit",
      metrics: [
        {
          id: "XmlStringMaxLen255", # required
          expression: "XmlStringMaxLen2047",
          metric_stat: {
            metric: { # required
              namespace: "MetricNamespace", # required
              metric_name: "MetricName", # required
              dimensions: [
                {
                  name: "MetricDimensionName", # required
                  value: "MetricDimensionValue", # required
                },
              ],
            },
            stat: "XmlStringMetricStat", # required
            unit: "MetricUnit",
          },
          label: "XmlStringMetricLabel",
          return_data: false,
        },
      ],
    },
    target_value: 1.0, # required
    disable_scale_in: false,
  },
  enabled: false,
  predictive_scaling_configuration: {
    metric_specifications: [ # required
      {
        target_value: 1.0, # required
        predefined_metric_pair_specification: {
          predefined_metric_type: "ASGCPUUtilization", # required, accepts ASGCPUUtilization, ASGNetworkIn, ASGNetworkOut, ALBRequestCount
          resource_label: "XmlStringMaxLen1023",
        },
        predefined_scaling_metric_specification: {
          predefined_metric_type: "ASGAverageCPUUtilization", # required, accepts ASGAverageCPUUtilization, ASGAverageNetworkIn, ASGAverageNetworkOut, ALBRequestCountPerTarget
          resource_label: "XmlStringMaxLen1023",
        },
        predefined_load_metric_specification: {
          predefined_metric_type: "ASGTotalCPUUtilization", # required, accepts ASGTotalCPUUtilization, ASGTotalNetworkIn, ASGTotalNetworkOut, ALBTargetGroupRequestCount
          resource_label: "XmlStringMaxLen1023",
        },
        customized_scaling_metric_specification: {
          metric_data_queries: [ # required
            {
              id: "XmlStringMaxLen255", # required
              expression: "XmlStringMaxLen1023",
              metric_stat: {
                metric: { # required
                  namespace: "MetricNamespace", # required
                  metric_name: "MetricName", # required
                  dimensions: [
                    {
                      name: "MetricDimensionName", # required
                      value: "MetricDimensionValue", # required
                    },
                  ],
                },
                stat: "XmlStringMetricStat", # required
                unit: "MetricUnit",
              },
              label: "XmlStringMetricLabel",
              return_data: false,
            },
          ],
        },
        customized_load_metric_specification: {
          metric_data_queries: [ # required
            {
              id: "XmlStringMaxLen255", # required
              expression: "XmlStringMaxLen1023",
              metric_stat: {
                metric: { # required
                  namespace: "MetricNamespace", # required
                  metric_name: "MetricName", # required
                  dimensions: [
                    {
                      name: "MetricDimensionName", # required
                      value: "MetricDimensionValue", # required
                    },
                  ],
                },
                stat: "XmlStringMetricStat", # required
                unit: "MetricUnit",
              },
              label: "XmlStringMetricLabel",
              return_data: false,
            },
          ],
        },
        customized_capacity_metric_specification: {
          metric_data_queries: [ # required
            {
              id: "XmlStringMaxLen255", # required
              expression: "XmlStringMaxLen1023",
              metric_stat: {
                metric: { # required
                  namespace: "MetricNamespace", # required
                  metric_name: "MetricName", # required
                  dimensions: [
                    {
                      name: "MetricDimensionName", # required
                      value: "MetricDimensionValue", # required
                    },
                  ],
                },
                stat: "XmlStringMetricStat", # required
                unit: "MetricUnit",
              },
              label: "XmlStringMetricLabel",
              return_data: false,
            },
          ],
        },
      },
    ],
    mode: "ForecastAndScale", # accepts ForecastAndScale, ForecastOnly
    scheduling_buffer_time: 1,
    max_capacity_breach_behavior: "HonorMaxCapacity", # accepts HonorMaxCapacity, IncreaseMaxCapacity
    max_capacity_buffer: 1,
  },
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :policy_name (required, String) —

    The name of the policy.

  • :policy_type (String) —

    One of the following policy types:

    • TargetTrackingScaling

    • StepScaling

    • SimpleScaling (default)

    • PredictiveScaling

  • :adjustment_type (String) —

    Specifies how the scaling adjustment is interpreted (for example, an absolute number or a percentage). The valid values are ChangeInCapacity, ExactCapacity, and PercentChangeInCapacity.

    Required if the policy type is StepScaling or SimpleScaling. For more information, see Scaling adjustment types in the Amazon EC2 Auto Scaling User Guide.

  • :min_adjustment_step (Integer) —

    Available for backward compatibility. Use MinAdjustmentMagnitude instead.

  • :min_adjustment_magnitude (Integer) —

    The minimum value to scale by when the adjustment type is PercentChangeInCapacity. For example, suppose that you create a step scaling policy to scale out an Auto Scaling group by 25 percent and you specify a MinAdjustmentMagnitude of 2. If the group has 4 instances and the scaling policy is performed, 25 percent of 4 is 1. However, because you specified a MinAdjustmentMagnitude of 2, Amazon EC2 Auto Scaling scales out the group by 2 instances.

    Valid only if the policy type is StepScaling or SimpleScaling. For more information, see Scaling adjustment types in the Amazon EC2 Auto Scaling User Guide.

    Some Auto Scaling groups use instance weights. In this case, set the MinAdjustmentMagnitude to a value that is at least as large as your largest instance weight.

  • :scaling_adjustment (Integer) —

    The amount by which to scale, based on the specified adjustment type. A positive value adds to the current capacity while a negative number removes from the current capacity. For exact capacity, you must specify a non-negative value.

    Required if the policy type is SimpleScaling. (Not used with any other policy type.)

  • :cooldown (Integer) —

    A cooldown period, in seconds, that applies to a specific simple scaling policy. When a cooldown period is specified here, it overrides the default cooldown.

    Valid only if the policy type is SimpleScaling. For more information, see Scaling cooldowns for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

    Default: None

  • :metric_aggregation_type (String) —

    The aggregation type for the CloudWatch metrics. The valid values are Minimum, Maximum, and Average. If the aggregation type is null, the value is treated as Average.

    Valid only if the policy type is StepScaling.

  • :step_adjustments (Array<Types::StepAdjustment>) —

    A set of adjustments that enable you to scale based on the size of the alarm breach.

    Required if the policy type is StepScaling. (Not used with any other policy type.)

  • :estimated_instance_warmup (Integer) —

    Not needed if the default instance warmup is defined for the group.

    The estimated time, in seconds, until a newly launched instance can contribute to the CloudWatch metrics. This warm-up period applies to instances launched due to a specific target tracking or step scaling policy. When a warm-up period is specified here, it overrides the default instance warmup.

    Valid only if the policy type is TargetTrackingScaling or StepScaling.

    The default is to use the value for the default instance warmup defined for the group. If default instance warmup is null, then EstimatedInstanceWarmup falls back to the value of default cooldown.

  • :target_tracking_configuration (Types::TargetTrackingConfiguration) —

    A target tracking scaling policy. Provides support for predefined or custom metrics.

    The following predefined metrics are available:

    • ASGAverageCPUUtilization

    • ASGAverageNetworkIn

    • ASGAverageNetworkOut

    • ALBRequestCountPerTarget

    If you specify ALBRequestCountPerTarget for the metric, you must specify the ResourceLabel property with the PredefinedMetricSpecification.

    For more information, see TargetTrackingConfiguration in the Amazon EC2 Auto Scaling API Reference.

    Required if the policy type is TargetTrackingScaling.

  • :enabled (Boolean) —

    Indicates whether the scaling policy is enabled or disabled. The default is enabled. For more information, see Disabling a scaling policy for an Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

  • :predictive_scaling_configuration (Types::PredictiveScalingConfiguration) —

    A predictive scaling policy. Provides support for predefined and custom metrics.

    Predefined metrics include CPU utilization, network in/out, and the Application Load Balancer request count.

    For more information, see PredictiveScalingConfiguration in the Amazon EC2 Auto Scaling API Reference.

    Required if the policy type is PredictiveScaling.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 968

def put_scaling_policy(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  Aws::Plugins::UserAgent.feature('resource') do
    @client.put_scaling_policy(options)
  end
  ScalingPolicy.new(
    name: options[:policy_name],
    client: @client
  )
end

#put_scheduled_update_group_action(options = {}) ⇒ ScheduledAction

Examples:

Request syntax with placeholder values


scheduledaction = auto_scaling_group.put_scheduled_update_group_action({
  scheduled_action_name: "XmlStringMaxLen255", # required
  time: Time.now,
  start_time: Time.now,
  end_time: Time.now,
  recurrence: "XmlStringMaxLen255",
  min_size: 1,
  max_size: 1,
  desired_capacity: 1,
  time_zone: "XmlStringMaxLen255",
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :scheduled_action_name (required, String) —

    The name of this scaling action.

  • :time (Time, DateTime, Date, Integer, String) —

    This property is no longer used.

  • :start_time (Time, DateTime, Date, Integer, String) —

    The date and time for this action to start, in YYYY-MM-DDThh:mm:ssZ format in UTC/GMT only and in quotes (for example, "2021-06-01T00:00:00Z").

    If you specify Recurrence and StartTime, Amazon EC2 Auto Scaling performs the action at this time, and then performs the action based on the specified recurrence.

  • :end_time (Time, DateTime, Date, Integer, String) —

    The date and time for the recurring schedule to end, in UTC. For example, "2021-06-01T00:00:00Z".

  • :recurrence (String) —

    The recurring schedule for this action. This format consists of five fields separated by white spaces: [Minute] [Hour] [Day_of_Month] [Month_of_Year] [Day_of_Week]. The value must be in quotes (for example, "30 0 1 1,6,12 *"). For more information about this format, see Crontab.

    When StartTime and EndTime are specified with Recurrence, they form the boundaries of when the recurring action starts and stops.

    Cron expressions use Universal Coordinated Time (UTC) by default.

  • :min_size (Integer) —

    The minimum size of the Auto Scaling group.

  • :max_size (Integer) —

    The maximum size of the Auto Scaling group.

  • :desired_capacity (Integer) —

    The desired capacity is the initial capacity of the Auto Scaling group after the scheduled action runs and the capacity it attempts to maintain. It can scale beyond this capacity if you add more scaling conditions.

    You must specify at least one of the following properties: MaxSize, MinSize, or DesiredCapacity.

  • :time_zone (String) —

    Specifies the time zone for a cron expression. If a time zone is not provided, UTC is used by default.

    Valid values are the canonical names of the IANA time zones, derived from the IANA Time Zone Database (such as Etc/GMT+9 or Pacific/Tahiti). For more information, see https://en.wikipedia.org/wiki/List_of_tz_database_time_zones.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1050

def put_scheduled_update_group_action(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  Aws::Plugins::UserAgent.feature('resource') do
    @client.put_scheduled_update_group_action(options)
  end
  ScheduledAction.new(
    name: options[:scheduled_action_name],
    client: @client
  )
end

#resume_processes(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


auto_scaling_group.resume_processes({
  scaling_processes: ["XmlStringMaxLen255"],
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :scaling_processes (Array<String>) —

    One or more of the following processes:

    • Launch

    • Terminate

    • AddToLoadBalancer

    • AlarmNotification

    • AZRebalance

    • HealthCheck

    • InstanceRefresh

    • ReplaceUnhealthy

    • ScheduledActions

    If you omit this property, all processes are specified.

Returns:

  • (EmptyStructure) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1090

def resume_processes(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.resume_processes(options)
  end
  resp.data
end

#scheduled_actions(options = {}) ⇒ ScheduledAction::Collection

Examples:

Request syntax with placeholder values


scheduled_actions = auto_scaling_group.scheduled_actions({
  scheduled_action_names: ["XmlStringMaxLen255"],
  start_time: Time.now,
  end_time: Time.now,
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :scheduled_action_names (Array<String>) —

    The names of one or more scheduled actions. If you omit this property, all scheduled actions are described. If you specify an unknown scheduled action, it is ignored with no error.

    Array Members: Maximum number of 50 actions.

  • :start_time (Time, DateTime, Date, Integer, String) —

    The earliest scheduled start time to return. If scheduled action names are provided, this property is ignored.

  • :end_time (Time, DateTime, Date, Integer, String) —

    The latest scheduled start time to return. If scheduled action names are provided, this property is ignored.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1711

def scheduled_actions(options = {})
  batches = Enumerator.new do |y|
    options = options.merge(auto_scaling_group_name: @name)
    resp = Aws::Plugins::UserAgent.feature('resource') do
      @client.describe_scheduled_actions(options)
    end
    resp.each_page do |page|
      batch = []
      page.data.scheduled_update_group_actions.each do |s|
        batch << ScheduledAction.new(
          name: s.scheduled_action_name,
          data: s,
          client: @client
        )
      end
      y.yield(batch)
    end
  end
  ScheduledAction::Collection.new(batches)
end

#service_linked_role_arn ⇒ String

The Amazon Resource Name (ARN) of the service-linked role that the Auto Scaling group uses to call other Amazon Web Services on your behalf.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 179

def service_linked_role_arn
  data[:service_linked_role_arn]
end

#set_desired_capacity(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


auto_scaling_group.set_desired_capacity({
  desired_capacity: 1, # required
  honor_cooldown: false,
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :desired_capacity (required, Integer) —

    The desired capacity is the initial capacity of the Auto Scaling group after this operation completes and the capacity it attempts to maintain.

  • :honor_cooldown (Boolean) —

    Indicates whether Amazon EC2 Auto Scaling waits for the cooldown period to complete before initiating a scaling activity to set your Auto Scaling group to its new capacity. By default, Amazon EC2 Auto Scaling does not honor the cooldown period during manual scaling activities.

Returns:

  • (EmptyStructure) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1116

def set_desired_capacity(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.set_desired_capacity(options)
  end
  resp.data
end

#status ⇒ String

The current state of the group when the DeleteAutoScalingGroup operation is in progress.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 158

def status
  data[:status]
end

#suspend_processes(options = {}) ⇒ EmptyStructure

Examples:

Request syntax with placeholder values


auto_scaling_group.suspend_processes({
  scaling_processes: ["XmlStringMaxLen255"],
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :scaling_processes (Array<String>) —

    One or more of the following processes:

    • Launch

    • Terminate

    • AddToLoadBalancer

    • AlarmNotification

    • AZRebalance

    • HealthCheck

    • InstanceRefresh

    • ReplaceUnhealthy

    • ScheduledActions

    If you omit this property, all processes are specified.

Returns:

  • (EmptyStructure) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1153

def suspend_processes(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  resp = Aws::Plugins::UserAgent.feature('resource') do
    @client.suspend_processes(options)
  end
  resp.data
end

#suspended_processes ⇒ Array<Types::SuspendedProcess>

The suspended processes associated with the group.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 132

def suspended_processes
  data[:suspended_processes]
end

#tag(key) ⇒ Tag

Parameters:

  • key (String)

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1734

def tag(key)
  Tag.new(
    key: key,
    resource_id: @name,
    resource_type: "auto-scaling-group",
    client: @client
  )
end

#tags ⇒ Tag::Collection

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1744

def tags
  batch = []
  data[:tags].each do |d|
    batch << Tag.new(
      key: d[:key],
      resource_id: d[:resource_id],
      resource_type: d[:resource_type],
      data: d,
      client: @client
    )
  end
  Tag::Collection.new([batch], size: batch.size)
end

#target_group_arns ⇒ Array<String>

The Amazon Resource Names (ARN) of the target groups for your load balancer.

Returns:

  • (Array<String>) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 108

def target_group_arns
  data[:target_group_arns]
end

#termination_policies ⇒ Array<String>

The termination policies for the group.

Returns:

  • (Array<String>) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 164

def termination_policies
  data[:termination_policies]
end

#traffic_sources ⇒ Array<Types::TrafficSourceIdentifier>

The traffic sources associated with this Auto Scaling group.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 232

def traffic_sources
  data[:traffic_sources]
end

#update(options = {}) ⇒ AutoScalingGroup

Examples:

Request syntax with placeholder values


autoscalinggroup = auto_scaling_group.update({
  launch_configuration_name: "XmlStringMaxLen255",
  launch_template: {
    launch_template_id: "XmlStringMaxLen255",
    launch_template_name: "LaunchTemplateName",
    version: "XmlStringMaxLen255",
  },
  mixed_instances_policy: {
    launch_template: {
      launch_template_specification: {
        launch_template_id: "XmlStringMaxLen255",
        launch_template_name: "LaunchTemplateName",
        version: "XmlStringMaxLen255",
      },
      overrides: [
        {
          instance_type: "XmlStringMaxLen255",
          weighted_capacity: "XmlStringMaxLen32",
          launch_template_specification: {
            launch_template_id: "XmlStringMaxLen255",
            launch_template_name: "LaunchTemplateName",
            version: "XmlStringMaxLen255",
          },
          instance_requirements: {
            v_cpu_count: { # required
              min: 1, # required
              max: 1,
            },
            memory_mi_b: { # required
              min: 1, # required
              max: 1,
            },
            cpu_manufacturers: ["intel"], # accepts intel, amd, amazon-web-services
            memory_gi_b_per_v_cpu: {
              min: 1.0,
              max: 1.0,
            },
            excluded_instance_types: ["ExcludedInstance"],
            instance_generations: ["current"], # accepts current, previous
            spot_max_price_percentage_over_lowest_price: 1,
            max_spot_price_as_percentage_of_optimal_on_demand_price: 1,
            on_demand_max_price_percentage_over_lowest_price: 1,
            bare_metal: "included", # accepts included, excluded, required
            burstable_performance: "included", # accepts included, excluded, required
            require_hibernate_support: false,
            network_interface_count: {
              min: 1,
              max: 1,
            },
            local_storage: "included", # accepts included, excluded, required
            local_storage_types: ["hdd"], # accepts hdd, ssd
            total_local_storage_gb: {
              min: 1.0,
              max: 1.0,
            },
            baseline_ebs_bandwidth_mbps: {
              min: 1,
              max: 1,
            },
            accelerator_types: ["gpu"], # accepts gpu, fpga, inference
            accelerator_count: {
              min: 1,
              max: 1,
            },
            accelerator_manufacturers: ["nvidia"], # accepts nvidia, amd, amazon-web-services, xilinx
            accelerator_names: ["a100"], # accepts a100, v100, k80, t4, m60, radeon-pro-v520, vu9p
            accelerator_total_memory_mi_b: {
              min: 1,
              max: 1,
            },
            network_bandwidth_gbps: {
              min: 1.0,
              max: 1.0,
            },
            allowed_instance_types: ["AllowedInstanceType"],
          },
        },
      ],
    },
    instances_distribution: {
      on_demand_allocation_strategy: "XmlString",
      on_demand_base_capacity: 1,
      on_demand_percentage_above_base_capacity: 1,
      spot_allocation_strategy: "XmlString",
      spot_instance_pools: 1,
      spot_max_price: "MixedInstanceSpotPrice",
    },
  },
  min_size: 1,
  max_size: 1,
  desired_capacity: 1,
  default_cooldown: 1,
  availability_zones: ["XmlStringMaxLen255"],
  health_check_type: "XmlStringMaxLen32",
  health_check_grace_period: 1,
  placement_group: "XmlStringMaxLen255",
  vpc_zone_identifier: "XmlStringMaxLen2047",
  termination_policies: ["XmlStringMaxLen1600"],
  new_instances_protected_from_scale_in: false,
  service_linked_role_arn: "ResourceName",
  max_instance_lifetime: 1,
  capacity_rebalance: false,
  context: "Context",
  desired_capacity_type: "XmlStringMaxLen255",
  default_instance_warmup: 1,
  instance_maintenance_policy: {
    min_healthy_percentage: 1,
    max_healthy_percentage: 1,
  },
})

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :launch_configuration_name (String) —

    The name of the launch configuration. If you specify LaunchConfigurationName in your update request, you can't specify LaunchTemplate or MixedInstancesPolicy.

  • :launch_template (Types::LaunchTemplateSpecification) —

    The launch template and version to use to specify the updates. If you specify LaunchTemplate in your update request, you can't specify LaunchConfigurationName or MixedInstancesPolicy.

  • :mixed_instances_policy (Types::MixedInstancesPolicy) —

    The mixed instances policy. For more information, see Auto Scaling groups with multiple instance types and purchase options in the Amazon EC2 Auto Scaling User Guide.

  • :min_size (Integer) —

    The minimum size of the Auto Scaling group.

  • :max_size (Integer) —

    The maximum size of the Auto Scaling group.

    With a mixed instances policy that uses instance weighting, Amazon EC2 Auto Scaling may need to go above MaxSize to meet your capacity requirements. In this event, Amazon EC2 Auto Scaling will never go above MaxSize by more than your largest instance weight (weights that define how many units each instance contributes to the desired capacity of the group).

  • :desired_capacity (Integer) —

    The desired capacity is the initial capacity of the Auto Scaling group after this operation completes and the capacity it attempts to maintain. This number must be greater than or equal to the minimum size of the group and less than or equal to the maximum size of the group.

  • :default_cooldown (Integer) —

    Only needed if you use simple scaling policies.

    The amount of time, in seconds, between one scaling activity ending and another one starting due to simple scaling policies. For more information, see Scaling cooldowns for Amazon EC2 Auto Scaling in the Amazon EC2 Auto Scaling User Guide.

  • :availability_zones (Array<String>) —

    One or more Availability Zones for the group.

  • :health_check_type (String) —

    A comma-separated value string of one or more health check types.

    The valid values are EC2, ELB, and VPC_LATTICE. EC2 is the default health check and cannot be disabled. For more information, see Health checks for Auto Scaling instances in the Amazon EC2 Auto Scaling User Guide.

    Only specify EC2 if you must clear a value that was previously set.

  • :health_check_grace_period (Integer) —

    The amount of time, in seconds, that Amazon EC2 Auto Scaling waits before checking the health status of an EC2 instance that has come into service and marking it unhealthy due to a failed health check. This is useful if your instances do not immediately pass their health checks after they enter the InService state. For more information, see Set the health check grace period for an Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

  • :placement_group (String) —

    The name of an existing placement group into which to launch your instances. For more information, see Placement groups in the Amazon EC2 User Guide for Linux Instances.

    A cluster placement group is a logical grouping of instances within a single Availability Zone. You cannot specify multiple Availability Zones and a cluster placement group.

  • :vpc_zone_identifier (String) —

    A comma-separated list of subnet IDs for a virtual private cloud (VPC). If you specify VPCZoneIdentifier with AvailabilityZones, the subnets that you specify must reside in those Availability Zones.

  • :termination_policies (Array<String>) —

    A policy or a list of policies that are used to select the instances to terminate. The policies are executed in the order that you list them. For more information, see Work with Amazon EC2 Auto Scaling termination policies in the Amazon EC2 Auto Scaling User Guide.

    Valid values: Default | AllocationStrategy | ClosestToNextInstanceHour | NewestInstance | OldestInstance | OldestLaunchConfiguration | OldestLaunchTemplate | arn:aws:lambda:region:account-id:function:my-function:my-alias

  • :new_instances_protected_from_scale_in (Boolean) —

    Indicates whether newly launched instances are protected from termination by Amazon EC2 Auto Scaling when scaling in. For more information about preventing instances from terminating on scale in, see Using instance scale-in protection in the Amazon EC2 Auto Scaling User Guide.

  • :service_linked_role_arn (String) —

    The Amazon Resource Name (ARN) of the service-linked role that the Auto Scaling group uses to call other Amazon Web Services on your behalf. For more information, see Service-linked roles in the Amazon EC2 Auto Scaling User Guide.

  • :max_instance_lifetime (Integer) —

    The maximum amount of time, in seconds, that an instance can be in service. The default is null. If specified, the value must be either 0 or a number equal to or greater than 86,400 seconds (1 day). To clear a previously set value, specify a new value of 0. For more information, see Replacing Auto Scaling instances based on maximum instance lifetime in the Amazon EC2 Auto Scaling User Guide.

  • :capacity_rebalance (Boolean) —

    Enables or disables Capacity Rebalancing. For more information, see Use Capacity Rebalancing to handle Amazon EC2 Spot Interruptions in the Amazon EC2 Auto Scaling User Guide.

  • :context (String) —

    Reserved.

  • :desired_capacity_type (String) —

    The unit of measurement for the value specified for desired capacity. Amazon EC2 Auto Scaling supports DesiredCapacityType for attribute-based instance type selection only. For more information, see Creating an Auto Scaling group using attribute-based instance type selection in the Amazon EC2 Auto Scaling User Guide.

    By default, Amazon EC2 Auto Scaling specifies units, which translates into number of instances.

    Valid values: units | vcpu | memory-mib

  • :default_instance_warmup (Integer) —

    The amount of time, in seconds, until a new instance is considered to have finished initializing and resource consumption to become stable after it enters the InService state.

    During an instance refresh, Amazon EC2 Auto Scaling waits for the warm-up period after it replaces an instance before it moves on to replacing the next instance. Amazon EC2 Auto Scaling also waits for the warm-up period before aggregating the metrics for new instances with existing instances in the Amazon CloudWatch metrics that are used for scaling, resulting in more reliable usage data. For more information, see Set the default instance warmup for an Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

    To manage various warm-up settings at the group level, we recommend that you set the default instance warmup, even if it is set to 0 seconds. To remove a value that you previously set, include the property but specify -1 for the value. However, we strongly recommend keeping the default instance warmup enabled by specifying a value of 0 or other nominal value.

  • :instance_maintenance_policy (Types::InstanceMaintenancePolicy) —

    An instance maintenance policy. For more information, see Set instance maintenance policy in the Amazon EC2 Auto Scaling User Guide.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 1467

def update(options = {})
  options = options.merge(auto_scaling_group_name: @name)
  Aws::Plugins::UserAgent.feature('resource') do
    @client.update_auto_scaling_group(options)
  end
  AutoScalingGroup.new(
    name: options[:auto_scaling_group_name],
    client: @client
  )
end

#vpc_zone_identifier ⇒ String

One or more subnet IDs, if applicable, separated by commas.

Returns:

  • (String) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 145

def vpc_zone_identifier
  data[:vpc_zone_identifier]
end

#wait_until(options = {}) {|resource| ... } ⇒ Resource

Deprecated.

Use [Aws::AutoScaling::Client] #wait_until instead

Note:

The waiting operation is performed on a copy. The original resource remains unchanged.

Waiter polls an API operation until a resource enters a desired state.

Basic Usage

Waiter will polls until it is successful, it fails by entering a terminal state, or until a maximum number of attempts are made.

# polls in a loop until condition is true
resource.wait_until(options) {|resource| condition}

Example

instance.wait_until(max_attempts:10, delay:5) do |instance|
  instance.state.name == 'running'
end

Configuration

You can configure the maximum number of polling attempts, and the delay (in seconds) between each polling attempt. The waiting condition is set by passing a block to #wait_until:

# poll for ~25 seconds
resource.wait_until(max_attempts:5,delay:5) {|resource|...}

Callbacks

You can be notified before each polling attempt and before each delay. If you throw :success or :failure from these callbacks, it will terminate the waiter.

started_at = Time.now
# poll for 1 hour, instead of a number of attempts
proc = Proc.new do |attempts, response|
  throw :failure if Time.now - started_at > 3600
end

  # disable max attempts
instance.wait_until(before_wait:proc, max_attempts:nil) {...}

Handling Errors

When a waiter is successful, it returns the Resource. When a waiter fails, it raises an error.

begin
  resource.wait_until(...)
rescue Aws::Waiters::Errors::WaiterFailed
  # resource did not enter the desired state in time
end

attempts attempt in seconds invoked before each attempt invoked before each wait

Parameters:

  • options (Hash) (defaults to: {}) —

    a customizable set of options

Options Hash (options):

  • :max_attempts (Integer) — default: 10 —

    Maximum number of

  • :delay (Integer) — default: 10 —

    Delay between each

  • :before_attempt (Proc) — default: nil —

    Callback

  • :before_wait (Proc) — default: nil —

    Callback

Yield Parameters:

  • resource (Resource) —

    to be used in the waiting condition.

Returns:

  • (Resource) —

    if the waiter was successful

Raises:

  • (Aws::Waiters::Errors::FailureStateError) —

    Raised when the waiter terminates because the waiter has entered a state that it will not transition out of, preventing success.

    yet successful.

  • (Aws::Waiters::Errors::UnexpectedError) —

    Raised when an error is encountered while polling for a resource that is not expected.

  • (NotImplementedError) —

    Raised when the resource does not



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 430

def wait_until(options = {}, &block)
  self_copy = self.dup
  attempts = 0
  options[:max_attempts] = 10 unless options.key?(:max_attempts)
  options[:delay] ||= 10
  options[:poller] = Proc.new do
    attempts += 1
    if block.call(self_copy)
      [:success, self_copy]
    else
      self_copy.reload unless attempts == options[:max_attempts]
      :retry
    end
  end
  Aws::Plugins::UserAgent.feature('resource') do
    Aws::Waiters::Waiter.new(options).wait({})
  end
end

#wait_until_exists(options = {}, &block) ⇒ AutoScalingGroup

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :max_attempts (Integer) — default: 10
  • :delay (Float) — default: 5
  • :before_attempt (Proc)
  • :before_wait (Proc)

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 299

def wait_until_exists(options = {}, &block)
  options, params = separate_params_and_options(options)
  waiter = Waiters::GroupExists.new(options)
  yield_waiter_and_warn(waiter, &block) if block_given?
  Aws::Plugins::UserAgent.feature('resource') do
    waiter.wait(params.merge(auto_scaling_group_names: [@name]))
  end
  AutoScalingGroup.new({
    name: @name,
    client: @client
  })
end

#wait_until_in_service(options = {}, &block) ⇒ AutoScalingGroup

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :max_attempts (Integer) — default: 40
  • :delay (Float) — default: 15
  • :before_attempt (Proc)
  • :before_wait (Proc)

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 318

def wait_until_in_service(options = {}, &block)
  options, params = separate_params_and_options(options)
  waiter = Waiters::GroupInService.new(options)
  yield_waiter_and_warn(waiter, &block) if block_given?
  Aws::Plugins::UserAgent.feature('resource') do
    waiter.wait(params.merge(auto_scaling_group_names: [@name]))
  end
  AutoScalingGroup.new({
    name: @name,
    client: @client
  })
end

#wait_until_not_exists(options = {}, &block) ⇒ AutoScalingGroup

Parameters:

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :max_attempts (Integer) — default: 40
  • :delay (Float) — default: 15
  • :before_attempt (Proc)
  • :before_wait (Proc)

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 337

def wait_until_not_exists(options = {}, &block)
  options, params = separate_params_and_options(options)
  waiter = Waiters::GroupNotExists.new(options)
  yield_waiter_and_warn(waiter, &block) if block_given?
  Aws::Plugins::UserAgent.feature('resource') do
    waiter.wait(params.merge(auto_scaling_group_names: [@name]))
  end
  AutoScalingGroup.new({
    name: @name,
    client: @client
  })
end

#warm_pool_configuration ⇒ Types::WarmPoolConfiguration

The warm pool for the group.

Returns:



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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 200

def warm_pool_configuration
  data[:warm_pool_configuration]
end

#warm_pool_size ⇒ Integer

The current size of the warm pool.

Returns:

  • (Integer) 


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# File 'gems/aws-sdk-autoscaling/lib/aws-sdk-autoscaling/auto_scaling_group.rb', line 206

def warm_pool_size
  data[:warm_pool_size]
end