aws_elb_service_account

data "aws_elb_service_account" "main" { }

resource "aws_s3_bucket" "elb_logs" {
    bucket = "my-elb-tf-test-bucket"
    acl = "private"
    policy = <<POLICY
{
  "Id": "Policy",
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": [
        "s3:PutObject"
      ],
      "Effect": "Allow",
      "Resource": "arn:aws:s3:::my-elb-tf-test-bucket/AWSLogs/*",
      "Principal": {
        "AWS": [
          "${data.aws_elb_service_account.main.id}"
        ]
      }
    }
  ]
}
POLICY
}

resource "aws_elb" "bar" {
  name = "my-foobar-terraform-elb"
  availability_zones = ["us-west-2a"]

  access_logs {
    bucket = "${aws_s3_bucket.elb_logs.bucket}"
    interval = 5
  }

  listener {
    instance_port = 8000
    instance_protocol = "http"
    lb_port = 80
    lb_protocol = "http"
  }
}