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🚀 Challenge 3 as part of #10WeeksofCloudOps - 2 tier Application using terraform

✨This repository is created to learn and deploy a 2-tier application on aws cloud through Terraform.

If you are a visual learner, feel free to check out this video:

2-tier Architecture using terraform

🏠 Architecture

Architecture diagram

Image Source: Ankit Jodhani

🖥️ Installation of Terraform

Note: Follow the blog for the step-by-step instructions to build this project. Terraform

Create S3 Backend Bucket

Create an S3 bucket to store the .tfstate file in the remote backend

Warning! It is highly recommended that you enable Bucket Versioning on the S3 bucket to allow for state recovery in the case of accidental deletions and human error.

Note: We will need this bucket name in the later step

Create a Dynamo DB table for state file locking

  • Give the table a name
  • Make sure to add a Partition key with the name LockID and type as String

Generate a public-private key pair for our instances

We need a public key and a private key for our server so please follow the procedure I've included below.

cd modules/key/
ssh-keygen

The above command asks for the key name and then gives client_key it will create a pair of keys one public and one private. you can give any name you want but then you need to edit the Terraform file

Edit the below file according to your configuration

vim root/backend.tf

Add the below code in root/backend.tf

terraform {
  backend "s3" {
    bucket = "BUCKET_NAME"
    key    = "backend/FILE_NAME_TO_STORE_STATE.tfstate"
    region = "us-east-1"
    dynamodb_table = "dynamoDB_TABLE_NAME"
  }
}

🏠 Let's set up the variable for our Infrastructure

Create one file with the name terraform.tfvars

vim root/terraform.tfvars

🔐 ACM certificate

Go to AWS console --> AWS Certificate Manager (ACM) and make sure you have a valid certificate in Issued status, if not, feel free to create one and use the domain name on which you are planning to host your application.

👨‍💻 Route 53 Hosted Zone

Go to AWS Console --> Route53 --> Hosted Zones and ensure you have a public hosted zone available, if not create one.

Add the below content into the root/terraform.tfvars file and add the values of each variable.

region = ""
project_name = ""
vpc_cidr                = ""
pub_sub_1a_cidr        = ""
pub_sub_2b_cidr        = ""
pri_sub_3a_cidr        = ""
pri_sub_4b_cidr        = ""
pri_sub_5a_cidr        = ""
pri_sub_6b_cidr        = ""
db_username = ""
db_password = ""
certificate_domain_name = ""
additional_domain_name = ""

✈️ Now we are ready to deploy our application on the cloud ⛅

get into the project directory

cd root

👉 let install dependency to deploy the application

terraform init

Type the below command to see the plan of the execution

terraform plan

✨Finally, HIT the below command to deploy the application...

terraform apply

Type yes, and it will prompt you for approval..

Thank you so much for reading..😅