运行带有 Terraform remote-exec 的简单网络服务器

Question

# example.tf
provider "aws" {
  region = "us-east-1"
}

resource "aws_instance" "example" {
  ami             = "ami-0d44833027c1a3297"
  instance_type   = "t2.micro"
  security_groups = ["${aws_security_group.example.name}"]
  key_name        = "${aws_key_pair.generated_key.key_name}"

  provisioner "remote-exec" {
    inline = [
      "cd /home/ubuntu/",
      "nohup python3 -m http.server 8080 &",
    ]

    connection {
      type        = "ssh"
      private_key = "${tls_private_key.example.private_key_pem}"
      user        = "ubuntu"
      timeout     = "1m"
    }
  }
}

resource "tls_private_key" "example" {
  algorithm = "RSA"
  rsa_bits  = 4096
}

resource "aws_key_pair" "generated_key" {
  key_name   = "example_key_pair"
  public_key = "${tls_private_key.example.public_key_openssh}"
}

resource "aws_security_group" "example" {
  name        = "grant ssh"
  description = "grant ssh"

  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  ingress {
    from_port   = 8080
    to_port     = 8080
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  egress {
    from_port   = 0
    to_port     = 0
    protocol    = "-1"
    cidr_blocks = ["0.0.0.0/0"]
  }
}

ami-0d44833027c1a3297 是一个 ubuntu AMI，带有一个 hello world index.html，位于 /home/ubuntu/

虽然，我没有收到任何错误，并且 ec2 实例已启动并且运行正在运行，但 http 服务器没有运行。

注意：如果我手动 ssh 并在内联部分应用同一组命令，我能够成功运行 http 服务器。如有任何帮助，我们将不胜感激！

Answer 1

修复：

inline = [
      ....
      "sleep 20",
    ]

我相信供应商在服务器进程开始之前退出（竞争条件），因此睡眠是必要的。

注意：睡眠的概念来自 Hashicorp Packer 文档(https://www.packer.io/docs/provisioners/shell.html)

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