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DQ Terraform Apps module

  • A version of the dq-tf-apps repository that is used to apply changes on the DQ AWS Test account
  • To update the repository (for equivalence to the live variant):
    • copy from dq-tf-apps
    • retain -test specific code
    • comment out unnecessary elements
    • ensure AMIs are accessible on Test account

Build Status

This module describes required VPC components for deploying our app modules into the DQ AWS environments.

It can be run against both Production and non-Production environments by setting a variable at runtime to switch the provider used.

Content overview

This repo controls the deployment of our application modules.

It consists of the following core elements:

main.tf

This file has most of the App modules along with basic VPC components:

  • Provider
  • VPC
  • Private and Public Route table
  • Elastic IP
  • NAT gateway
  • Public subnet and route table association

s3.tf

This file consists of encrypted S3 buckets, IAM policy and random_string generator along with VPC S3 endpoints for logs and data feeds.

data.tf

Data lookup for EC2 instance AMIs.

ad_instance.tf

This set of resources creates a couple of EC2 machines in their subnet, associate them to the main route table then adds them to a Security Group and joins them to Microsoft AD.

outputs.tf

Various data outputs for other modules/consumers.

variables.tf

Input data for resources within this repo.

tests/apps_test.py

Code and resource tester with mock data. It can be expanded by adding further definitions to the unit.

User guide

Prepare your local environment

This project currently depends on:

  • drone v0.5+dev
  • terraform v0.11.1+
  • terragrunt v0.13.21+
  • python v3.6.3+

Please ensure that you have the correct versions installed (it is not currently tested against the latest version of Drone)

How to run/deploy

To run the scripts from your local machine:

# export/set variables
terragrunt plan
terragrunt apply

FAQs

The remote state isn't updating, what do I do?

If the CI process appears to be stuck with a stale tf state then run the following command to force a refresh:

terragrunt refresh