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Cover image for Deploying IAC with your secrets in Terraform Vault

Deploying IAC with your secrets in Terraform Vault

DAY 23 - Deploying IAC with your secrets in Terraform Vault - Day Twenty three

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What is Vault?

Securely accesses secrets , HashiCorp explains as Vault comes with various pluggable components called secrets engines and authentication methods allowing you to integrate with external systems. Vault issues temporary tokens to access the resources.
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  • In the blog I will be demonstrating how to setup a vault
  • Accessing secrets from Vault to Deploy your infrastructure into a AWS environment.

Prerequisite

Install AWS CLI and Configure with IAM credentials

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Install Vault

Goto this link to install Vault
I Am using a WSL Linux on windows

  • Getting GPG key
curl -fsSL https://apt.releases.hashicorp.com/gpg | sudo apt-key add -
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  • Adding HashiCorp Linux repo
sudo apt-add-repository "deb [arch=amd64] https://apt.releases.hashicorp.com $(lsb_release -cs) main"
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  • install
sudo apt-get update && sudo apt-get install vault
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Setup Vault Project folder

  • Lets create a project folder named Vault and cd into it

Setup Vault Server (Dev environment)

vault server -dev -dev-root-token-id="environment"
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Note down the Vault Address, Unsealkey & Root token.

Sign into vault server

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Enter token as "environment"

  • Select Secret & Click Create Secret.
  • Enter your IAM Programmatic access keys & Save.

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Deploying with Vault

  • Create a main.tf file and copy paste this command
terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "3.58.0"
    }
  }
}

data "vault_generic_secret" "aws_creds" {
    path = "secret/aws"
}

provider "aws" {
  region  = data.vault_generic_secret.aws_creds.data["region"]
    access_key = data.vault_generic_secret.aws_creds.data["aws_access_key_id"]
    secret_key = data.vault_generic_secret.aws_creds.data["aws_secret_access_key"]
}


resource "aws_instance" "my_server" {
  ami           = "ami-059af0b76ba105e7e"
  instance_type = "t2.nano"
    tags = {
        Name = "Vault-Server"
    }
}
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You have to change ami incase your region is not on ap-southeast-2

  • Initialize Terraform
terraform init
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  • Plan terraform
terraform plan
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You will be prompted to enter the vault url, in this case it is http://127.0.0.1:8200/

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  • Deploy infrastructure
terraform apply -auto-approve
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  • Enter url of vault when its prompted.

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  • Teardown your infrastructure

if you are happy with the deployment , you can tear down the deployed resources

terraform apply -auto-approve -destroy
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😀🎉Congratulations🎉 you have successfully deployed IAC with Terraform Vault

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