ec2(t3.micro)で外部公開httpサーバだけ立ち上げてみる

basic_public_http_server_instance.tf

provider "aws" {
  region = "ap-northeast-1"
}

data "aws_ami" "recent_amazon_linux_2" {
  most_recent = true
  owners = ["amazon"]
  
  filter {
    name   = "name"
    values = ["amzn2-ami-hvm-2.0.????????-x86_64-gp2"]
  }
  filter {
    name   = "state"
    values = ["available"]
  }
}

resource "aws_security_group" "example_ec2" {
  name = "example-ec2"
  
  ingress {
    from_port = 80
    to_port   = 80
    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" "example" { 
  ami           = data.aws_ami.recent_amazon_linux_2.image_id
  instance_type = "t3.micro"
  vpc_security_group_ids = [aws_security_group.example_ec2.id]
  
  user_data = <<EOF
    #!/bin/bash
    yum install -y httpd
    systemctl start httpd.service
  EOF
  
  tags = {
    Name = "example"
  }
}

output "example_instance_id" {
  value = aws_instance.example.id
}
output "example_public_dns" {
  value = aws_instance.example.public_dns
}
output "example_public_ip" {
  value = aws_instance.example.public_ip
}