main.tf

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 4.16"
    }
  }
  required_version = ">= 1.2.0"
}

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

## Security groups
resource "aws_security_group" "TF_SG" {
  name        = "security group using Terraform"
  description = "security group using Terraform"
  vpc_id      = "vpc-09a8007d164fdf84c"

  ingress {
    description      = "HTTPS"
    from_port        = 443
    to_port          = 443
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  ingress {
    description      = "HTTP"
    from_port        = 80
    to_port          = 80
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  ingress {
    description      = "SSH"
    from_port        = 22
    to_port          = 22
    protocol         = "tcp"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  egress {
    from_port        = 0
    to_port          = 0
    protocol         = "-1"
    cidr_blocks      = ["0.0.0.0/0"]
    ipv6_cidr_blocks = ["::/0"]
  }

  tags = {
    Name = "TF_SG"
  }
}

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

## Key Pair for ssh
resource "aws_key_pair" "TF_key" {
  key_name   = "TF_key"
  public_key = tls_private_key.rsa.public_key_openssh
}

resource "local_file" "TF-key" {
  content  = tls_private_key.rsa.private_key_pem
  filename = "tfkey"
}

## instance
resource "aws_instance" "gautam_server" {
  ami                    = "ami-03f4878755434977f"
  instance_type          = "t2.micro"
  key_name               = aws_key_pair.TF_key.key_name
  vpc_security_group_ids = [aws_security_group.TF_SG.id]
  tags = {
    Name = "gautam_server"
  }
}

resource "local_file" "server_ip" {
  content  = aws_instance.gautam_server.public_ip
  filename = "server_ip"
}