Aws-cdk: CDK DIFF not displaying in AWS CF ChangeSet console

Created on 29 Oct 2019 · 5Comments · Source: aws/aws-cdk

I've just noticed that cdk diffis not displaying the ChangeSet in the AWS CF Console.
Why ? Any reason for that ?
( seeing the ChangeSet in AWS CF Console history is too late with cdk deploy)

I like seeing the changes in console using cdk diffbut they should be identical to what I should be visualising in AWS CF ChangeSet before applying them. Are they identical ?

Use Case

daily scenario: updating existing Stacks in various environments
I don't want to check the ChangeSet history but I would like to check prior to applying the changes with cdk deploy

Proposed Solution

cdk diff just this command or with a flag to display the ChangeSet details also in AWS CF ChangeSet Console

[ ] :wave: I may be able to implement this feature request
[ ] :warning: This feature might incur a breaking change

This is a :rocket: Feature Request

feature-request in-progress packagtools

Source

emanserav

Most helpful comment

Great job guys!
Many thanks @robertma96 @SomayaB @eladb
Can’t wait to use this in the future release.

emanserav on 13 Nov 2019

👍4

All 5 comments

I'm interested in this too.

I would love to be able to deploy a Change Set to a stack, without executing the changes. Basically I would like to see what will change through AWS CloudFormation service, and then execute or discard the changes.

cdk deploy STACK creates a Change Set AND applies the changes.

I would love to have an option that will create the Change Set (so I can visualise it in AWS CloudFormation) and not apply the changes.

Something like cdk deploy STACK --execute-change-set no.

robertma96 on 29 Oct 2019

I can see where this can be useful. How would that work with multi-stack apps? Will it create a changeset for all of them?

As for the name of the switch, I think --execute and --no-execute should be sufficient and --no-execute should print the link to the change set of course!