Using both Terraform and Ansible together can create a robust and flexible infrastructure provisioning and configuration management solution. Here are some common use cases with example code snippets for each:

Use Case 1: Provisioning Infrastructure with Terraform and Configuring with Ansible

Scenario: You want to provision AWS EC2 instances using Terraform and then configure them (e.g., install and start a web server) using Ansible.

Step 1: Provision Infrastructure with Terraform

1. Terraform Configuration (main.tf)

provider "aws" {
  region = "us-west-2"
}

resource "aws_instance" "web" {
  ami           = "ami-0c55b159cbfafe1f0"  # Amazon Linux 2 AMI
  instance_type = "t2.micro"  tags = {
    Name = "WebServer"
  }  connection {
    type        = "ssh"
    user        = "ec2-user"
    private_key = file("<path_to_your_private_key>")
    host        = self.public_ip
  }  provisioner "local-exec" {
    command = "echo '${self.public_ip}' > inventory"
  }
}output "instance_ip" {
  value = aws_instance.web.public_ip
}

1. Terraform Commands

terraform init
terraform apply

Step 2: Configure the EC2 Instance with Ansible

1. Inventory File (generated by Terraform)