More than Certified in Terraform - Course Project Repository

Section 3: Modular Deployments (terraform-docker folder)

Creates a weather dashboard using node-red, InfluxDB, and Grafana docker containers
Uses an "image" module for the container image resources
Uses a "container" module with a nested "volume" module for creating the containers with persistent volumes
Key concepts include writing DRY Terraform code, passing outputs between modules, using provisioners, iterating through object variables, using dynamic blocks, and using workspaces

Same concept of a weather dashboard using containers, but this time deployed on K3 instances on AWS
Uses nodered to pull from the openweather map API, insert the data into InfluxDB, and then use Grafana to graph the data
Containers are deployed to K3s using local config file
Includes modules for:
- networking: Creates the VPC, public/private subnets, internet gateway, security groups, subnet groups (for RDS)
- loadbalancing: Creates the ALB, target groups, and listeners for load balancing between K3 nodes
- database: Creates the RDS MySQL database used for K3s
- compute: Uses Ubuntu AMI to deploy instances, bootstraps them with K3s and adds them to the ALB target group
Terraform Cloud is used as the remote state backend for this deployment
AWS role used for deployment is created with least privileges required and assumed by AWS user. Local credentials are secured with AWS vault

Create AWS modules for networking and compute hosted in GitHub. Create modules in Terraform Cloud (TFC) backed by the GitHub repos.
Create GitHub repo, TFC OAuth client (GitHub), and a TFC workspace all using Terraform
Use the TFC workspace to deploy compute and networking using the modules when a commit is made in the GitHub repository