在 null 资源上运行本地 exec 后刷新 terraform state

Question

我已经使用 terraform 创建了一个 EC2 实例，我想关闭/打开它，只需修改一个变量并使用terraform apply -auto-approve ，这已经完成（检查下面的代码），我遇到的问题是我需要that terraform refresh itself after the local-exec execution and after the instance has changed its state from on->off or vice versa because I want terraform to save the state of the last action (ec2 off or on).

这是我到目前为止所拥有的：

resource "null_resource" "change_instance_state" {
  count = var.instance-state == "keep" ? 0 : var.instance_count

  provisioner "local-exec" {
    on_failure  = fail
    interpreter = ["/bin/bash", "-c"]

    command = <<EOT
        echo "Warning! Performing the --> ${lookup(var.instance-state-map, var.instance-state)} <-- operation on instance/s having:"
        echo "ec2-id:           ${aws_instance.dev_node[count.index].id}"
        echo "ec2-ip:           ${aws_instance.dev_node[count.index].public_ip}"
        echo "ec2-public dns:   ${aws_instance.dev_node[count.index].public_dns}"

        # Performing the action
        aws ec2 ${lookup(var.instance-state-map, var.instance-state)} --instance-ids ${aws_instance.dev_node[count.index].id}
        echo "******* Action Performed *******"
    EOT
  }
  # this setting will trigger the script every time var.instance-state change
  triggers = {
    last-modified-state = "${var.instance-state}"
  }
}

笔记：

• I tried to update the state adding terraform apply -refresh-only -auto-approve at the end of the script but, you all know that terraform locked itself and this action can't be done while terraform is running.