aws_alb_target_group data source

[hashibot]

This issue was originally opened by @eheydrick as hashicorp/terraform#14420. It was migrated here as part of the provider split. The original body of the issue is below.

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It would be great if there was an aws_alb_target_group data source. My use case is that I want to create a bunch of alb target groups and then create anaws_alb_listener_rule for each target group. That way I can create a single ALB that uses host based routing to target multiple services.

[aharin]

It will be extremely useful to be able to get ARN or alb target group given its name. In the ECS context to assign a container to a classic elb only the name was required, however with alb one needs ARN of alb target group to register a container. Since ARN is not known up front, it would be very useful to query alb target group by name to find the ARN

[stack72]

Closed via #1037

[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!