[AWS::RDS::DBCluster] - [Ignore PreferredBackupWindow or BackupRetentionPeriod if AWS Backup is managing PITR backups] -

[dbayardAWS]

Name of the resource

AWS::RDS::DBCluster

Resource name

No response

Description

If a customer has a CFN stack with AWS::RDS::DBCluster or AWS::RDS::DBInstance that specifies PreferredBackupWindow or BackupRetentionPeriod, and the customer then turns on AWS Backup to manage PITR backups for the cluster/instance, the CFN stack will be marked as in drift.

The customer asks the CFN resource to ignore PreferredBackupWindow or BackupRetentionPeriod if AWS Backup is managing PITR backups for the resource (i.e. CFN should not give errors about drift).

The customer also reports that currently they can work around this somewhat by removing PreferredBackupWindow from existing stacks-- but they still need to maintain BackupRetentionPeriod in existing stacks to exactly match the current AWS Backup setting, which is tedious for them.

Other Details

for AWS staff... internal PFR link: https://aws-crm.lightning.force.com/lightning/r/Product_Feature_Request__c/a2vRU000000ErFlYAK/view