Terraforms

Comparison B/W Ansible, Docker and Terraform

Ansible	Docker	Terraform
Ansible is a configuration management tool	Docker is a container tool	Terraform is an Orchestration tool
It provides support for mutable infrastructure	It provides support for immutable infrastructure	It provides support for immutable infrastructure
It follows a procedural language	It follows a declarative language	It follows a declarative language
It provides complete support for packaging and templating	It provides support for packaging and templating	It provides partial support for packaging and templating
It does not have lifecycle management	It follows lifecycle	It depends on lifecycle and state management

Terraform Script to create linux Ec2 instance with security groups

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.0"
    }
  }
}
provider "aws" {
  region = "us-west-2"

  access_key = "my-access-key"
  secret_key = "my-secret-key"
}
resource "aws_instance" "hari-first-ec2" {
  ami           = "ami-03d5c68bab01f3496"
  instance_type = "t2.micro"

    tags = {
    Name = "Harish"
  }
}
resource "aws_security_group" "ResourceGroup" {
  name        = "allow_tls"
  description = "Allow TLS inbound traffic"
  vpc_id      = aws_vpc.main.id

  tags = {
    Name = "harishResourceGroup"
  }
}
resource "aws_key_pair" "deployer" {
  key_name   = "deployer-key"
  public_key = ""
}