Migration Infrastructure Teardown

After a migration is complete all resources should be removed except for the target cluster, and optionally you Cloudwatch Logs, and Replayer logs.

To remove all the CDK stack(s) which get created during a deployment you can execute a command similar to below within the CDK directory

cdk destroy "*" --c contextId=<CONTEXT_ID>

Or to remove an individual stack from the deployment we can execute

cdk destroy migration-console --c contextId=<CONTEXT_ID>

Note: If the given contextId has created a target cluster Domain and has the retention policy for the OpenSearch Domain set to DESTROY, it will remove this resource and all its data when the stack is deleted. In order to retain the Domain on stack deletion the domainRemovalPolicy would need to be set to RETAIN.

Troubleshooting

There is a known issue with the MSKUtility stack custom resource sometimes failing to get removed, and taking a long time to remove on retry. The current workaround, while this teardown is being improved, is to retry delete of this stack on failure.