(aws_docdb): (Propogate maintenace window settings to cluster's instances)

[nritholtz]

Describe the feature

Currently if you specified a preferredMaintenanceWindow on a cdk.aws_docdb.DatabaseCluster construct, it will only apply it to the cluster level. See

aws-cdk/packages/aws-cdk-lib/aws-docdb/lib/cluster.ts

Line 570 in 8b234b7

dbInstanceClass: databaseInstanceType(props.instanceType),

. Add support for instance's window as well.

Use Case

This is creating unexpected maintenance events when you declared the window at the cluster level, and assumed instances would follow suit.

Proposed Solution

We should allow if you specify preferredMaintenanceWindow on cluster level, it should apply to instances as well.

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CDK version used

2.142.1

Environment details (OS name and version, etc.)

Mac 13.5.2

[khushail]

Hey @nritholtz , thanks for submitting this FR. I am not sure how this should be implemented as by passing it to instanceprops or creating a flag, however suggestions and contributions are welcome from the community!