RollingUpdateConfiguration

class aws_cdk.aws_autoscaling.RollingUpdateConfiguration(*, max_batch_size=None, min_instances_in_service=None, min_successful_instances_percent=None, pause_time=None, suspend_processes=None, wait_on_resource_signals=None)

Bases: object

(deprecated) Additional settings when a rolling update is selected.

Parameters
  • max_batch_size (Union[int, float, None]) – (deprecated) The maximum number of instances that AWS CloudFormation updates at once. Default: 1

  • min_instances_in_service (Union[int, float, None]) – (deprecated) The minimum number of instances that must be in service before more instances are replaced. This number affects the speed of the replacement. Default: 0

  • min_successful_instances_percent (Union[int, float, None]) – (deprecated) The percentage of instances that must signal success for an update to succeed. If an instance doesn’t send a signal within the time specified in the pauseTime property, AWS CloudFormation assumes that the instance wasn’t updated. This number affects the success of the replacement. If you specify this property, you must also enable the waitOnResourceSignals and pauseTime properties. Default: 100

  • pause_time (Optional[Duration]) – (deprecated) The pause time after making a change to a batch of instances. This is intended to give those instances time to start software applications. Specify PauseTime in the ISO8601 duration format (in the format PT#H#M#S, where each # is the number of hours, minutes, and seconds, respectively). The maximum PauseTime is one hour (PT1H). Default: Duration.minutes(5) if the waitOnResourceSignals property is true, otherwise 0

  • suspend_processes (Optional[Sequence[ScalingProcess]]) – (deprecated) Specifies the Auto Scaling processes to suspend during a stack update. Suspending processes prevents Auto Scaling from interfering with a stack update. Default: HealthCheck, ReplaceUnhealthy, AZRebalance, AlarmNotification, ScheduledActions.

  • wait_on_resource_signals (Optional[bool]) – (deprecated) Specifies whether the Auto Scaling group waits on signals from new instances during an update. AWS CloudFormation must receive a signal from each new instance within the specified PauseTime before continuing the update. To have instances wait for an Elastic Load Balancing health check before they signal success, add a health-check verification by using the cfn-init helper script. For an example, see the verify_instance_health command in the Auto Scaling rolling updates sample template. Default: true if you specified the minSuccessfulInstancesPercent property, false otherwise

Deprecated

use UpdatePolicy.rollingUpdate()

Stability

deprecated

Attributes

max_batch_size

(deprecated) The maximum number of instances that AWS CloudFormation updates at once.

Default

1

Stability

deprecated

Return type

Union[int, float, None]

min_instances_in_service

(deprecated) The minimum number of instances that must be in service before more instances are replaced.

This number affects the speed of the replacement.

Default

0

Stability

deprecated

Return type

Union[int, float, None]

min_successful_instances_percent

(deprecated) The percentage of instances that must signal success for an update to succeed.

If an instance doesn’t send a signal within the time specified in the pauseTime property, AWS CloudFormation assumes that the instance wasn’t updated.

This number affects the success of the replacement.

If you specify this property, you must also enable the waitOnResourceSignals and pauseTime properties.

Default

100

Stability

deprecated

Return type

Union[int, float, None]

pause_time

(deprecated) The pause time after making a change to a batch of instances.

This is intended to give those instances time to start software applications.

Specify PauseTime in the ISO8601 duration format (in the format PT#H#M#S, where each # is the number of hours, minutes, and seconds, respectively). The maximum PauseTime is one hour (PT1H).

Default

Duration.minutes(5) if the waitOnResourceSignals property is true, otherwise 0

Stability

deprecated

Return type

Optional[Duration]

suspend_processes

(deprecated) Specifies the Auto Scaling processes to suspend during a stack update.

Suspending processes prevents Auto Scaling from interfering with a stack update.

Default

HealthCheck, ReplaceUnhealthy, AZRebalance, AlarmNotification, ScheduledActions.

Stability

deprecated

Return type

Optional[List[ScalingProcess]]

wait_on_resource_signals

(deprecated) Specifies whether the Auto Scaling group waits on signals from new instances during an update.

AWS CloudFormation must receive a signal from each new instance within the specified PauseTime before continuing the update.

To have instances wait for an Elastic Load Balancing health check before they signal success, add a health-check verification by using the cfn-init helper script. For an example, see the verify_instance_health command in the Auto Scaling rolling updates sample template.

Default

true if you specified the minSuccessfulInstancesPercent property, false otherwise

Stability

deprecated

Return type

Optional[bool]