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Terraform Exercise

Here is the flow for the terraform part:

alt text

Description

Create Terraform code that provisions the following:

  • VPC with 2 public subnets (2 subnets at least needed for creating NLB)
  • EC2 (linux-based) with fixed IP
  • NLB that spans over two subnets

Environment:

This assignment was tested against the following environment (internal network behind firewall):

  • CentOS Linux 7 VM
  • 16 GBs Ram
  • 4 CPU Cores
  • 100 GB Disk
  • Terraform v1.3.6

The terraform code was tested against AWS region: eu-central-1

Prerequisites:

  • AWS account
  • IAM User with auhtorized to create VPC, EC2 AWS Resources
  • AWS Access Key (Set an env variable or in ~/.aws/credentials)
  • AWS Secret Access Key (Set an env variable or in ~/.aws/credentials)

How to run the terraform code

After fulfilling the pre-requisites, run the following:

terraform init

The init command initializes a Terraform working directoty.

You need to run the init command when you clone the repo or add a new module.

terraform validate

In order to verify and validate the configuration, you can run the validate command.

terraform plan

Run the plan command to create an execution plan. This will let you preview the changes that Terraform will make to the infrastructure.

terraform apply

The apply command will actually execute the Terraform plan. In other words, this command will create the resources shown in the diagram above: VPC, EC2 and NLB.