How to create a VPC in AWS with two instances of CentOS 9 using Terraform:

1. Install Terraform on your local machine.
2. Create a new directory for your Terraform project.
3. Create a new file in the directory named "main.tf".
4. Add the following code to "main.tf":

main.tf

 provider "aws" {
  region = "us-east-1"
}

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

resource "aws_subnet" "example_subnet_1" {
  vpc_id     = aws_vpc.example_vpc.id
  cidr_block = "10.0.1.0/24"
}

resource "aws_subnet" "example_subnet_2" {
  vpc_id     = aws_vpc.example_vpc.id
  cidr_block = "10.0.2.0/24"
}

resource "aws_security_group" "example_sg_1" {
  name_prefix = "example_sg_1"
  vpc_id      = aws_vpc.example_vpc.id

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

resource "aws_security_group" "example_sg_2" {
  name_prefix = "example_sg_2"
  vpc_id      = aws_vpc.example_vpc.id

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

resource "aws_instance" "example_instance_1" {
  ami           = "ami-0a5ae2501482eae54"
  instance_type = "t2.micro"
  subnet_id     = aws_subnet.example_subnet_1.id
  vpc_security_group_ids = [aws_security_group.example_sg_1.id]
}

resource "aws_instance" "example_instance_2" {
  ami           = "ami-0a5ae2501482eae54"
  instance_type = "t2.micro"
  subnet_id     = aws_subnet.example_subnet_2.id
  vpc_security_group_ids = [aws_security_group.example_sg_2.id]
}

Note: In this example, we are using the US East 1 region, so please change it to the region of your choice.

5. Save the file.
6. Initialize your Terraform project by running terraform init in your project directory.
7. Create a plan for your infrastructure by running terraform plan.
8. Apply the changes to create your VPC and instances by running terraform apply.
9. Once the instances have been created, you can access them via SSH using their public IP addresses.

And that's it! You should now have a VPC with two instances of CentOS 9 running in AWS, created using Terraform.

 

From chat GPT.