# SignalsOptions

Customization options for Signal handling.

- Source: [`aws-autoscaling/lib/auto-scaling-group.ts`](https://github.com/aws/aws-cdk/blob/v2.275.0/packages/aws-cdk-lib/aws-autoscaling/lib/auto-scaling-group.ts#L972)

## Example

```ts
declare const vpc: ec2.Vpc;
declare const instanceType: ec2.InstanceType;
declare const machineImage: ec2.IMachineImage;

new autoscaling.AutoScalingGroup(this, 'ASG', {
  vpc,
  instanceType,
  machineImage,

  // ...

  init: ec2.CloudFormationInit.fromElements(
    ec2.InitFile.fromString('/etc/my_instance', 'This got written during instance startup'),
  ),
  signals: autoscaling.Signals.waitForAll({
    timeout: Duration.minutes(10),
  }),
});
```

## Properties

- `minSuccessPercentage`: number = 100 — The percentage of signals that need to be successful.

  If this number is less than 100, a percentage of signals may be failure
  signals while still succeeding the creation or update in CloudFormation.

- `timeout`: [Duration](/cdk/api/v2/docs/aws-cdk-lib.Duration.html) = Duration.minutes(5) — How long to wait for the signals to be sent.

  This should reflect how long it takes your instances to start up
  (including instance start time and instance initialization time).