AWSAutoScalingUpdateAutoScalingGroupType

Objective-C

@interface AWSAutoScalingUpdateAutoScalingGroupType

Swift

class AWSAutoScalingUpdateAutoScalingGroupType

  • The name of the Auto Scaling group.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable autoScalingGroupName;

    Swift

    var autoScalingGroupName: String? { get set }

  • One or more Availability Zones for the group.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSArray<NSString *> *_Nullable availabilityZones;

    Swift

    var availabilityZones: [String]? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable capacityRebalance;

    Swift

    var capacityRebalance: NSNumber? { get set }

  • Reserved.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable context;

    Swift

    var context: String? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable defaultCooldown;

    Swift

    var defaultCooldown: NSNumber? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable defaultInstanceWarmup;

    Swift

    var defaultInstanceWarmup: NSNumber? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable desiredCapacity;

    Swift

    var desiredCapacity: NSNumber? { get set }

  • 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 Create a mixed instances 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

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable desiredCapacityType;

    Swift

    var desiredCapacityType: String? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable healthCheckGracePeriod;

    Swift

    var healthCheckGracePeriod: NSNumber? { get set }

  • 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 instances in an Auto Scaling group in the Amazon EC2 Auto Scaling User Guide.

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

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable healthCheckType;

    Swift

    var healthCheckType: String? { get set }

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

    Declaration

    Objective-C

    @property (nonatomic, strong) AWSAutoScalingInstanceMaintenancePolicy *_Nullable instanceMaintenancePolicy;

    Swift

    var instanceMaintenancePolicy: AWSAutoScalingInstanceMaintenancePolicy? { get set }

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

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable launchConfigurationName;

    Swift

    var launchConfigurationName: String? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) AWSAutoScalingLaunchTemplateSpecification *_Nullable launchTemplate;

    Swift

    var launchTemplate: AWSAutoScalingLaunchTemplateSpecification? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable maxInstanceLifetime;

    Swift

    var maxInstanceLifetime: NSNumber? { get set }

  • 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).

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable maxSize;

    Swift

    var maxSize: NSNumber? { get set }

  • The minimum size of the Auto Scaling group.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable minSize;

    Swift

    var minSize: NSNumber? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) AWSAutoScalingMixedInstancesPolicy *_Nullable mixedInstancesPolicy;

    Swift

    var mixedInstancesPolicy: AWSAutoScalingMixedInstancesPolicy? { get set }

  • 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 Use instance scale-in protection in the Amazon EC2 Auto Scaling User Guide.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSNumber *_Nullable latestInstancesProtectedFromScaleIn;

    Swift

    var latestInstancesProtectedFromScaleIn: NSNumber? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable placementGroup;

    Swift

    var placementGroup: String? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable serviceLinkedRoleARN;

    Swift

    var serviceLinkedRoleARN: String? { get set }

  • 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 Configure termination policies for Amazon EC2 Auto Scaling 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

    Declaration

    Objective-C

    @property (nonatomic, strong) NSArray<NSString *> *_Nullable terminationPolicies;

    Swift

    var terminationPolicies: [String]? { get set }

  • 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.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSString *_Nullable VPCZoneIdentifier;

    Swift

    var vpcZoneIdentifier: String? { get set }