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focusaurus / hexagonal-lambda

Sample of an AWS lambda application using hexagonal architecture
MIT License
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Terraform apply fails first, then works 2nd time in some cases #1

Open focusaurus opened 7 years ago

focusaurus commented 7 years ago

Sometimes a terraform apply run does some things successfully but fails before completing. Then I rerun it again immediately without any other changes/actions and it succeeds. My strong hunch about this is that most likely my resource dependencies are not modeled correctly in terraform. I have seen this in at least 2 specific cases.

  1. Fresh install into a blank slate AWS account.
aws_api_gateway_deployment.hexagonal-lambda-dev: Error creating API Gateway Deployment: BadRequestException: The REST API doesn't contain any methods
    status code: 400, request id: redacted
  1. Creating a new lambda function.
Error applying plan:

1 error(s) occurred:

* aws_iam_role_policy_attachment.post-up: 1 error(s) occurred:

* aws_iam_role_policy_attachment.post-up: [WARN] Error attaching policy arn:aws:iam::REDACTED:policy/terraform-redacted to IAM Role post-up: NoSuchEntity: Role not found for post-up
    status code: 404, request id: redacted
focusaurus commented 7 years ago

@cludden Might you be willing to review the terraform stuff in this repo? Mostly just for generally "am I doing this right" but also if you have experienced some of the dependency issues when using modules and have suggestions I'd love to hear them.

cludden commented 7 years ago

@focusaurus I'm not exactly sure what's causing you're errors, but I pushed an example project that I through together based on past projects. Maybe you can spot the differences. Hope it helps

focusaurus commented 7 years ago

Thanks! Already picked up a nice tip with aws_caller_identity. Will study in more detail soon too.