CloudFormation Features: Part II

Build on your understanding of CloudFormation by understanding more of its core features.

We'll cover the following

CreatePolicy

The CreatePolicy attribute can be used with a resource to prevent its status from reaching the create complete state until AWS CloudFormation receives a certain number of signals from the resource. The CreatePolicy attribute is only supported by the following resource types:

  • AWS::AppStream::Fleet
  • AWS::AutoScaling::AutoScalingGroup
  • AWS::EC2::Instance
  • AWS::CloudFormation::WaitCondition

In the following code, we have a resource, EducativeASG, with desired capacity 3. We’ve associated a creation policy with this ASG to ensure that CloudFormation receives three SUCCESS signals, one from each of the ASG instances.

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