Support the new Application Load Balancer gRPC workload & HTTP/2 protocol versions

[chappoo]

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Description

AWS have added support for gRPC workloads with end to end HTTP/2 to the Application Load Balancer. The aws_lb_target_group resource needs to be enhanced to support these additional protocol versions.

New or Affected Resource(s)

• aws_lb_target_group

Potential Terraform Configuration

# gRPC
resource "aws_lb_target_group" "grpc" {
  name             = "tf-example-lb-tg"
  port             = 5500
  protocol         = "HTTPS"
  protocol_version = "gRPC"
  vpc_id           = aws_vpc.main.id
}

# http2
resource "aws_lb_target_group" "http2" {
  name             = "tf-example-lb-tg"
  port             = 443
  protocol         = "HTTPS"
  protocol_version = "HTTP2"
  vpc_id           = aws_vpc.main.id
}

References

• https://aws.amazon.com/about-aws/whats-new/2020/10/application-load-balancers-enable-grpc-workloads-end-to-end-http-2-support/
• https://aws.amazon.com/blogs/aws/new-application-load-balancer-support-for-end-to-end-http-2-and-grpc/

[ewbankkit]

Requires AWS SDK v1.35.18:

• build(deps): bump github.com/aws/aws-sdk-go from 1.35.9 to 1.35.18 #15930

This has been released in version 3.27.0 of the Terraform AWS provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

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