Starts an instance refresh. During an instance refresh, Amazon EC2 Auto Scaling performs a rolling update of instances in an Auto Scaling group. Instances are terminated first and then replaced, which temporarily reduces the capacity available within your Auto Scaling group.
See https://www.paws-r-sdk.com/docs/autoscaling_start_instance_refresh/ for full documentation.
autoscaling_start_instance_refresh(
AutoScalingGroupName,
Strategy = NULL,
DesiredConfiguration = NULL,
Preferences = NULL
)[required] The name of the Auto Scaling group.
The strategy to use for the instance refresh. The only valid value is
Rolling.
The desired configuration. For example, the desired configuration can specify a new launch template or a new version of the current launch template.
Once the instance refresh succeeds, Amazon EC2 Auto Scaling updates the settings of the Auto Scaling group to reflect the new desired configuration.
When you specify a new launch template or a new version of the current
launch template for your desired configuration, consider enabling the
SkipMatching property in preferences. If it's enabled, Amazon EC2 Auto
Scaling skips replacing instances that already use the specified launch
template and instance types. This can help you reduce the number of
replacements that are required to apply updates.
Sets your preferences for the instance refresh so that it performs as
expected when you start it. Includes the instance warmup time, the
minimum healthy percentage, and the behaviors that you want Amazon EC2
Auto Scaling to use if instances that are in Standby state or
protected from scale in are found. You can also choose to enable
additional features, such as the following:
Auto rollback
Checkpoints
CloudWatch alarms
Skip matching