How to attach an EBS volume to EC2 instance using terraform

Question

Hi Guys,

I am new in Terraform. I want to attach an EBS volume to EC2 instance using Terraform. Can anyone help me with this?

Answer 1

Hi@akhtar,

You can use aws_volume_attachment resource to attach an ebs volume. I have attached one example below for your reference.

variable "device_name" {default=["/dev/sdd"]}
variable "ec2_ebs_volume_count" {default=1}
resource "aws_ebs_volume" "ebs_volume" {
  availability_zone = aws_instance.myin2.availability_zone
  size = 2
  tags = {
    Name = "myebs1"
  }
}
resource "aws_volume_attachment" "ebs_att" {
  device_name = "/dev/sdd"
  volume_id = aws_ebs_volume.ebs_volume.id
  instance_id = aws_instance.myin2.id
  force_detach = true
} 

Hope this will help.

Comments

If you were to use this, when the machine booted, the device will be present to the instance, but will not be mounted at any mount point, nor be in the fstab.  This I think needs to be done via user_data.tpl.

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You can try that.