使用 terraform 启动 EC2 实例时出错

Posted 2023-03-24

【中文标题】使用 terraform 启动 EC2 实例时出错

【英文标题】：Error while launching EC2 instance using terraform

【发布时间】：2022-01-15 18:05:13

【问题描述】：

我对 Terraform 还很陌生。我正在尝试使用以下 Terraform 代码来启动 EC2 实例：

provider "aws" 
  region     = "ap-south-1"
  access_key = "<Key>"
  secret_key = "<secret>"

# Main VPC
resource "aws_vpc" "vpc_main" 
  cidr_block = "10.0.0.0/16"

  enable_dns_support   = true
  enable_dns_hostnames = true

  tags = 
    Name = "Main VPC"
  


resource "aws_subnet" "public" 
  vpc_id                  = "$aws_vpc.vpc_main.id"
  cidr_block              = "10.0.0.0/16"
  map_public_ip_on_launch = true
  tags = 
    Name                  = "Public Subnet"
  


resource "aws_security_group" "allow_web" 
  name        = "allow-web-traffic"
  description = "Allow all inbound/outbound traffic on 80 443"
  vpc_id      = "$aws_vpc.vpc_main.id"

  ingress 
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  

  ingress 
    from_port = 443
    to_port   = 443
    protocol  = "tcp"
  

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


resource "aws_security_group" "allow_ssh" 
  name        = "allow-ssh-traffic"
  description = "Allow ssh traffic on 22"
  vpc_id      = "$aws_vpc.vpc_main.id"

  ingress 
    from_port   = 22
    to_port     = 22
    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"]
  


resource "aws_instance" "proxy_server" 
  ami           = "ami-026f33d38b6410e30" # RHEL 7.5 HVM SSD
  instance_type = "t2.micro"
  key_name      = "EC2NewKey"
  security_groups = ["allow_ssh","allow_web"]
  vpc_security_group_ids = ["$aws_security_groups.allow_ssh.id","$aws_security_group.allow_web.id"] # this breaks it
  subnet_id     = "$aws_subnet.public.id"

但在执行“Terraform plan”时出错：“未在根模块中声明托管资源“aws_security_groups”“allow_ssh”。谁能告诉我我在代码中犯了什么基本错误 ?

【问题讨论】：

你打错了：资源是aws_security_group而不是groups。

【参考方案1】：

一个错字。

aws_security_groups.allow_ssh.id

应该变成：

aws_security_group.allow_ssh.id