FR: data/aws_cloudwatch_log_group

[jkroepke]

Hi there,

Thank you for opening an issue. Please note that we try to keep the Terraform issue tracker reserved for bug reports and feature requests. For general usage questions, please see: https://www.terraform.io/community.html.

Terraform Version

Terraform v0.11.3

• provider.aws v1.8.0
• provider.local v1.0.0
• provider.null v1.0.0
• provider.template v1.0.0

Affected Resource(s)

Please list the resources as a list, for example:

• d/aws_cloudwatch_log_group

Hi,

For the API Gateway, amazon create automaticly Cloudwatch Log Groups based on the aws gw id (e.g.)

I want to import the Log Group and apply additional configurations. Thats why i'm need the aws_cloudwatch_log_group data source.

[bflad]

Hi @jkroepke, you specifically are mentioning the following:

I want to import the Log Group and apply additional configurations.

In Terraform's configuration model this is handled by a resource, not a data source. Think of data sources as read-only information about AWS itself or your infrastructure.

The documentation for the existing aws_cloudwatch_log_group resource has information on importing an existing CloudWatch log group into Terraform.

With an example configuration such as:

resource "aws_api_gateway_rest_api" "example" {
  name = "example"
  # ... other configuration ...
}

resource "aws_api_gateway_stage" "example" {
  stage_name = "example"
  rest_api_id = "${aws_api_gateway_rest_api.example.id}"
  # ... other configuration ...
}

# This should work as a configuration when importing (it if it exists)
# However, could have issues if being created the same time as above
resource "aws_cloudwatch_log_group" "example" {
  name = "API-Gateway-Execution-Logs_${aws_api_gateway_rest_api.example.id}/${aws_api_gateway_stage.example.stage_name}"
  # ... other configuration ...
}

You might be have some trouble doing this automatically when the API Gateway is created at the same time as the CloudWatch log group though. AWS might create the log group automatically before Terraform does, in which Terraform will throw an error on creating the log group. If that is your situation, please let us know.

[bflad]

The aws_cloudwatch_log_group data source has been released in version 1.15.0 of the AWS provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

[ghost]

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 feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!