Write a comparison between Ansible Vs Docker Vs Terraform

Terraform Ansible D

Tool category	Orchestration	Configuration management
Approach	Immutable infrastructure	Mutable infrastructure
Language	Declarative	Imperative
Provisioning	Specializes in infrastructure provisioning	Limited support for infrastructure provisioning
LIfecycle management	Lifecycle aware.  Maintains state of deployments.	No lifecycle awareness
Command line operation	Yes	Yes
Agentless	Yes	Yes

Docker

Tool category Storage/Volume Management ,Orchestration and Schedulers

Approach Mutable infrastructure

Language Declarative

Provisioning Specializes in infrastructure provisioning

LIfecycle management created, running, deleted, paused ,stopped

Command line operation Yes

Agentless Yes

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Write a terraform script where you create a linux ec2 instance with Security group and key defined so you should be able to use key to login to ec2 instance.

terraform{

Required_Providers {

linux ec2 instance ={

source = “hashicorp/linux ec2” version = “~>3.27 “

}

}

provider “linux” {

profile = “Abhishek”

region = “us-west-2”

access_key = ” ” secret_key = ” “

}

resource “linux_security_group ” allow key to login”{

name = “devopsschool”

description = ” allow key to login ec2 instance”

}