DQ Terraform Peering module

This module describes required VPC components for deploying our 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 the basic VPC components:

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

instances.tf

This set of resources have the following components:

• Module for an EC2 connectivity tester instance
• Security group for the EC2 instance
• Module for an EC2 HAproxy instance

output.tf

Various data outputs for other modules/consumers.

variables.tf

Input data for resources within this repo.

tests/peering_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