https://github.com/shinmoniee/aws-vpc-ec2-terraform-workspace

Exploring the use of Terraform workspaces for managing multiple environments within a single Terraform configuration.
https://github.com/shinmoniee/aws-vpc-ec2-terraform-workspace

aws infrastructure-as-code terraform terraform-workspace

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Exploring the use of Terraform workspaces for managing multiple environments within a single Terraform configuration.

• Host: GitHub
• URL: https://github.com/shinmoniee/aws-vpc-ec2-terraform-workspace
• Owner: shinmoniee
• Created: 2024-08-01T16:12:21.000Z (6 months ago)
• Default Branch: master
• Last Pushed: 2024-08-12T12:18:37.000Z (6 months ago)
• Last Synced: 2024-11-20T17:58:12.518Z (2 months ago)
• Topics: aws, infrastructure-as-code, terraform, terraform-workspace
• Language: HCL
• Homepage:
• Size: 23.4 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# AWS VPC and EC2 Configuration with Terraform Workspaces

This hands-on demonstrates the use of Terraform to create AWS infrastructure using workspaces and a local backend. It showcases how to manage multiple environments (UAT, staging, prod) with a single Terraform configuration.

## Key Configuration Points

Create a Terraform configuration with the following specifications:

- Use a local backend with three workspaces (UAT, staging, prod)

- One config folder (root module) for three workspaces

- Deploy the below architecture with respective value files (e.g., uat.tfvars) in respective workspaces

![AWS Architecture Design](./images/AWSArchitectureDesign.png)

- Avoid using the default workspace

- Use input variables for vpc_cidr and public_subnet_cidr

- Uses existing key pair for EC2 instance

- Set resource names based on the current Terraform workspace

  - VPC name → $(terraform.workspace)-vpc

  - Key Pair name → $(terraform.workspace)-public-key

  - EC2 instance name → $(terraform.workspace)-instance

- Include specific tags for EC2 instances

  - EC2 tags include "Managed by": "Terraform" (referenced from locals)

## Code Layout

```

.

├── main.tf         # Main Terraform configuration file

├── variables.tf    # Input variable declarations

├── outputs.tf      # Output value declarations

├── locals.tf       # Local value definitions

├── terraform.tf    # Provider and backend configurations

├── uat.tfvars      # UAT environment-specific variables

├── staging.tfvars  # Staging environment-specific variables

└── prod.tfvars     # Production environment-specific variables

```

## Learning Outcomes

- Implementing multi-environment setups using Terraform workspaces

- Managing environment-specific configurations with variable files

- Applying dynamic resource naming in Terraform

- Configuring basic AWS networking components (VPC, subnet) with Terraform

- Deploying and managing EC2 instances and Elastic IPs with Terraform