--- layout: "aws" page_title: "AWS: aws_elb_attachment" sidebar_current: "docs-aws-resource-elb-attachment" description: |- Provides an Elastic Load Balancer Attachment resource. --- # aws\_elb\_attachment Provides an Elastic Load Balancer Attachment resource. ~> **NOTE on ELB Instances and ELB Attachments:** Terraform currently provides both a standalone ELB Attachment resource (describing an instance attached to an ELB), and an [Elastic Load Balancer resource](elb.html) with `instances` defined in-line. At this time you cannot use an ELB with in-line instaces in conjunction with an ELB Attachment resource. Doing so will cause a conflict and will overwrite attachments. ## Example Usage ``` # Create a new load balancer attachment resource "aws_elb_attachment" "baz" { elb = "${aws_elb.bar.id}" instance = ["${aws_instance.foo.id}"] } ``` ## Argument Reference The following arguments are supported: * `elb` - (Required) The name of the ELB. * `instance` - (Required) Instance ID to place in the ELB pool.