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Terraform
Write, plan, and apply infrastructure as code across any cloud.
0Free
Infrastructure as Code
Overview
Open-source tool by HashiCorp for building, changing, and versioning infrastructure safely and efficiently.
Key Features
- Declarative HCL configuration language
- State management for tracking real infrastructure
- Plan/apply workflow to preview changes before applying
- Provider ecosystem for AWS, Azure, GCP, and 1000+ services
- Modules for reusable infrastructure components
- Remote backends for team collaboration and state locking
Real-World Workflows
Provision a production VPC on AWS
- 1Write HCL to define VPC, subnets, route tables, and security groups
- 2Run terraform init to download the AWS provider
- 3Run terraform plan to preview all resources to be created
- 4Run terraform apply to provision the infrastructure
- 5Store state in S3 backend with DynamoDB locking for team access
Multi-environment infrastructure with workspaces
- 1Define modules for compute, networking, and storage
- 2Use terraform workspace to create dev, staging, and prod environments
- 3Run plan/apply per environment promoting changes bottom-up
- 4Use Terraform Cloud for remote runs, audit logs, and policy checks
Getting Started
brew install terraform terraform init terraform plan terraform apply
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