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Prerequisites and Setup

AWS Account

Examples used in this tutorial will be run on MacOS. We will need AWS Account, AWS CLI, Terraform and Keybase app to be installed.

You can sign-up for a new AWS account if you don't have one here Sign-up AWS. AWS lambda offers free tier up to 1 million requests per month. This is applicable for both existing and new customers.

Installation

Terraform

On Mac, simple way to install terraform is by using Homebrew. The homebrew formulae for Terraform is available here Terraform Homebrew Formulae Following command should help in installing Terraform.

brew install terraform

The version of terraform installed on your machine can be verified as below.

➜  ~ terraform version
Terraform v0.14.2

Note: The examples in this tutorial are run on the above version of terraform (latest while writing this tutorial).

AWS CLI

AWS Documentation here, explains the necessary steps to install AWS CLI tool. Post installation, you can verify using the version command.

➜  aws --version
aws-cli/2.1.1 Python/3.9.0 Darwin/19.0.0 source/x86_64

The examples in this tutorial are run on the above version of AWS CLI (latest while writing this tutorial). You can also verify the current (root) user configured for CLI, by using the command below.

➜  aws configure list
      Name                    Value             Type    Location
      ----                    -----             ----    --------
   profile                <not set>             None    None
access_key     ****************XYXY shared-credentials-file
secret_key     ****************aBcd shared-credentials-file
    region                us-east-1      config-file    ~/.aws/config

Quick Notes

  • ~/.aws (dot aws) folder in your user home is a location where AWS CLI references for configuration & credentials.
  • ~/.aws/config file is used for specifying various aws profiles. The [default] profile entry here will be used by AWS CLI, for executing the commands.
  • ~/.aws/credentials is a file where the aws_access_key_id and aws_secret_access_key of the profiles can be specified.

Note: aws_secret_access_key is mentioned in plain text in ~/.aws/credentials file. This is not recommended for security reasons, if you are on a shared laptop or feel, the file can be accessed by others. But, we will proceed with this tutorial using this approach. At th end of the tutorial the credentials will be removed.

Samples

All the samples used in this series are available in samples folder. Lambda language is NodeJS. ES6 is not used to avoid the extra steps pf babel and bundling node_modules. Values like AWS Account ID etc., in the samples are masked

Keybase App

We will use Keybase app as the pgp provider. This will be used by terraform to the AWS (web) console password. If you do not have one installed, you can install using the steps provided here.

Install Keybase on MacOS

🏁 Congrats ! You got your Terraform and AWS CLI Setup complete 🏁

Next: Terraform Overview