Day 3 Project & Assignment

Hands-on project

Build reusable modules:

Modules
  ├── VPC Module
  ├── EC2 Module
  └── S3 Module

Wire them together with:

• Local and remote state (S3 backend)
• Workspaces for dev and prod
• Variables, outputs, and resource references from Days 1–2

Optional stretch goals as you grow:

• Conditionals (count / ternary expressions)
• Built-in functions
• Loops (for_each / for)

Assignment 1 — EC2 module

Create an ec2 module and launch 2 EC2 instances from it (two module blocks, or one module that accepts a list — your choice).

Assignment 2 — S3 backend

Create an S3 bucket for state and configure:

backend "s3" { ... }

Migrate state with:

terraform init -migrate-state

Confirm the .tfstate object appears in the bucket.

Assignment 3 — Workspaces

terraform workspace new dev
terraform workspace new prod

Deploy separate infrastructure in each workspace (for example different Name tags via ${terraform.workspace}).

Verify both environments exist at the same time.

Clean up

Destroy each workspace before deleting it:

terraform workspace select prod
terraform destroy
 
terraform workspace select dev
terraform destroy
 
terraform workspace select default
terraform workspace delete prod
terraform workspace delete dev

Day 3 summary

Terraform modules
        ↓
Module structure
        ↓
Terraform state
        ↓
State commands
        ↓
Remote state (S3)
        ↓
Terraform workspaces
        ↓
Multi-environment deployment