terraform-beginner-to-master-examples/provisioners_example_03/main.tf at master · venupyneni07/terraform-beginner-to-master-examples · GitHub

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provider "aws" {
  region  = "eu-west-1"
}

resource "aws_vpc" "vpc" {
  cidr_block = "10.0.0.0/16"
}

resource "aws_internet_gateway" "main" {
  vpc_id = aws_vpc.vpc.id
}

resource "aws_subnet" "public" {
  vpc_id                  = aws_vpc.vpc.id
  cidr_block              = aws_vpc.vpc.cidr_block
  map_public_ip_on_launch = true
  availability_zone       = "eu-west-1a"
}

resource "aws_route_table" "public" {
  vpc_id = aws_vpc.vpc.id

  route {
    cidr_block = "0.0.0.0/0"
    gateway_id = aws_internet_gateway.main.id
  }
}

resource "aws_route_table_association" "gateway_route" {
  subnet_id      = aws_subnet.public.id
  route_table_id = aws_route_table.public.id
}

resource "aws_security_group" "rules" {
  name   = "example"
  vpc_id = aws_vpc.vpc.id

  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["${var.my_ip}/32"]
  }

  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_key_pair" "keypair" {
  key_name   = "key"
  public_key = file("nginx_key.pub")
}

data "aws_ami" "ami" {
  most_recent = true
  owners      = ["amazon"]

  filter {
    name   = "name"
    values = ["amzn2-ami-hvm-2.0.*-x86_64-gp2"]
  }
}

resource "aws_instance" "nginx" {
  ami                    = data.aws_ami.ami.image_id
  instance_type          = "t2.micro"
  subnet_id              = aws_subnet.public.id
  vpc_security_group_ids = [aws_security_group.rules.id]
  key_name               = aws_key_pair.keypair.key_name
}

resource "null_resource" "setup" {
  provisioner "local-exec" {
    command = <<CMD
    ssh -i nginx_key ec2-user@${aws_instance.nginx.public_ip} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null 'sudo amazon-linux-extras enable nginx1.12; sudo yum -y install nginx; sudo chmod 777 /usr/share/nginx/html/index.html; echo \"Hello from nginx on AWS\" > /usr/share/nginx/html/index.html; sudo systemctl start nginx;'
CMD
  }
}