AWS Certified Advanced Networking - Specialty Exam Guide

DeletionPolicy

DeletionPolicy can be used to determine whether to retain a resource that was created within a CloudFormation deployment when the stack is terminated. DeletionPolicy will help us to retain any data that was created while the stack was operating.

There are three types of deletion policies:

• Delete: This deletes the resource.
• Snapshot: This creates a snapshot of supported resources, such as EBS volumes and RDS databases.
• Retain: This prevents the resource from being deleted when the stack is terminated.

Here is an example of a DeletionPolicy instance that will create a snapshot of the RDS database when the stack is deleted:

{ "Resources" : { "myRDSdb" : { "Type" : "AWS::RDS::DBInstance", "DeletionPolicy" : "Snapshot" } } }