AWSAutoScalingRefreshPreferences

Objective-C

@interface AWSAutoScalingRefreshPreferences

Swift

class AWSAutoScalingRefreshPreferences

Describes information used to start an instance refresh.

All properties are optional. However, if you specify a value for CheckpointDelay, you must also provide a value for CheckpointPercentages.

  • The amount of time, in seconds, to wait after a checkpoint before continuing. This property is optional, but if you specify a value for it, you must also specify a value for CheckpointPercentages. If you specify a value for CheckpointPercentages and not for CheckpointDelay, the CheckpointDelay defaults to 3600 (1 hour).

    Declaration

    Objective-C

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

    Swift

    var checkpointDelay: NSNumber? { get set }

  • Threshold values for each checkpoint in ascending order. Each number must be unique. To replace all instances in the Auto Scaling group, the last number in the array must be 100.

    For usage examples, see Adding checkpoints to an instance refresh in the Amazon EC2 Auto Scaling User Guide.

    Declaration

    Objective-C

    @property (nonatomic, strong) NSArray<NSNumber *> *_Nullable checkpointPercentages;

    Swift

    var checkpointPercentages: [NSNumber]? { get set }

  • The number of seconds until a newly launched instance is configured and ready to use. During this time, Amazon EC2 Auto Scaling does not immediately move on to the next replacement. The default is to use the value for the health check grace period defined for the group.

    Declaration

    Objective-C

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

    Swift

    var instanceWarmup: NSNumber? { get set }

  • The amount of capacity in the Auto Scaling group that must remain healthy during an instance refresh to allow the operation to continue, as a percentage of the desired capacity of the Auto Scaling group (rounded up to the nearest integer). The default is 90.

    Declaration

    Objective-C

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

    Swift

    var minHealthyPercentage: NSNumber? { get set }