dynamic for example terraform

dynamic-used-in-resource.tf

variable "ephemeral_block_device" {
  type = map(string)
  default = {
    "sdb" = "ephemeral0"
    "sdc" = "ephemeral1"
    "sdd" = "ephemeral2"
    "sde" = "ephemeral3"
    "sdf" = "ephemeral4"
    "sdg" = "ephemeral5"
  }
}

resource "aws_instance" "warm" {
  dynamic "ephemeral_block_device" {
    for_each = var.ephemeral_block_device
    content {
      device_name  = ephemeral_block_device.key
      virtual_name = ephemeral_block_device.value
    }
  }
  <snip>
}