opentofu
OpenTofu
Overview
OpenTofu is an open-source infrastructure as code tool that uses HCL (HashiCorp Configuration Language) to declaratively manage cloud infrastructure. It is a community-driven fork of Terraform, fully compatible with existing Terraform providers and modules, with exclusive features like native state encryption. Pulumi provides an alternative IaC approach using general-purpose languages (TypeScript, Python, Go) instead of HCL.
When to use: Managing cloud infrastructure declaratively, provisioning multi-cloud resources, enforcing infrastructure consistency across environments, encrypting state at rest (OpenTofu), using familiar programming languages for IaC (Pulumi).
When NOT to use: One-off scripts better suited to CLI tools, application-level configuration management (use Ansible/Chef), container orchestration logic (use Kubernetes manifests), simple static hosting (use platform-native tools).
Quick Reference
| Pattern | Tool / Command | Key Points |
|---|---|---|
| Initialize project | tofu init |
Downloads providers, initializes backend |
| Preview changes | tofu plan |
Shows diff without applying |
| Apply changes | tofu apply |
Provisions/updates resources |
| Destroy resources | tofu destroy |
Tears down managed infrastructure |
| Import resource | tofu import <addr> <id> |
Brings existing resource under management |
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