Customizing CDK Bootstrap resources

As a follow-up for my previous article, I will explain here how we can customize the resources which are created as part of CDKToolkit stack.

There are two ways to achieve this:

1. Use command line parameters with the cdk bootstrap command to customize few resources.
2. Modify the cloudformation template which creates the CDKToolkit stack.

cdk bootstrap — template <custom-template-file> — toolkit-stack-name <stack-name>

Command line arguments to customize

1. --bootstrap-bucket-name overrides name of the artifact bucket
2. --bootstrap-kms-key-id overrides the AWS KMS key to encrypt the artifact bucket
3. --cloudformation-execution-policies set specific IAM policies that the CloudFormation execution role should assume during the deployment process.
4. --bootstrap-customer-key Create a Customer Master Key (CMK) for the bootstrap bucket (you will be charged but can customize permissions, modern bootstrapping only).

This option is not compatible with --bootstrap-kms-key-id.