REsize Amazon EBS volumes without a reboot: Step 2 Detect instance IP base on attached volume

volumes.tf

// volumes.tf
// ...
data "aws_instance" "mysql" {
  filter {
    name   = "block-device-mapping.volume-id"
    values = ["${aws_ebs_volume.mysql.id}"]
  }
}

output "instance_id" {
  value = "${data.aws_instance.mysql.id}"
}