Add new aws_mwaa_environment property "Worker replacement strategy" (graceful / forced)

[andreasbolstad]

Description

AWS has added a new attribute for MWAA environments. Useful to have that available to users of the terraform resource aws_mwaa_environment.

Affected Resource(s) or Data Source(s)

• aws_mwaa_environment

Potential Terraform Configuration

worker_replacement_strategy = "GRACEFUL"

References

Userguide: https://docs.aws.amazon.com/mwaa/latest/userguide/update-environment.html#worker-replacement-strategy

Go SDK: https://docs.aws.amazon.com/mwaa/latest/API/API_UpdateEnvironment.html#API_UpdateEnvironment_RequestSyntax

Would you like to implement the enhancement?

No

[github-actions[bot]]

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[tabito-hara]

Require AWS GO SDK v2 Release (2025-05-29)

Note: The WorkerReplacementStrategy parameter appears only in the Update API—not in the Create or Get APIs—indicating that it is related to the update operation itself, rather than the resource state.

[rmccarthy-ellevation]

Any update on this?

[jmahlik]

Sharing in case anyone finds a workaround helpful since it seems this might be a while. Managed to get this working with a null_resource and the aws cli. It only updates the env once upon initial creation.

resource "null_resource" "graceful_update" {
  triggers = {
    # When these change, a new env got created so re-run this to update it only once on creation
    vpc      = aws_mwaa_environment.mwaa-environment.webserver_vpc_endpoint_service
    database = aws_mwaa_environment.mwaa-environment.database_vpc_endpoint_service
  }
  provisioner "local-exec" {
    command = "chmod +x ./scripts/graceful-update.sh; ./scripts/graceful-update.sh ${var.region} ${aws_mwaa_environment.mwaa-environment.name}"
  }

  depends_on = [aws_mwaa_environment.mwaa-environment]
}

graceful-update.sh

#!/usr/bin/env bash
# Hack until https://github.com/hashicorp/terraform-provider-aws/issues/42842 is done
set -euv -o pipefail

region="$1"
environment="$2"

aws mwaa \
    update-environment \
    --region="$region" \
    --name="$environment" \
    --worker-replacement-strategy='GRACEFUL' 

[github-actions[bot]]

[!WARNING] This Issue has been closed, meaning that any additional comments are much easier for the maintainers to miss. Please assume that the maintainers will not see them.

Ongoing conversations amongst community members are welcome, however, the issue will be locked after 30 days. Moving conversations to another venue, such as the AWS Provider forum, is recommended. If you have additional concerns, please open a new issue, referencing this one where needed.

[github-actions[bot]]

This functionality has been released in v6.11.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions[bot]]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.