Migrate from Terraform to OpenTofu with this low-risk playbook

Short summary

A practical playbook for migrating from Terraform to OpenTofu with rollback safety at every step. The core insight is that OpenTofu reads the same HCL and state files, so migration is swapping binaries, not rewriting configs. The key steps: pin your current Terraform and provider versions, install OpenTofu alongside Terraform, run a parity plan check per workspace, apply in non-prod first, then swap CI automation one workspace at a time.

• •OpenTofu reads the same HCL and state as Terraform — migration is a binary swap, not a rewrite
• •Run a zero-change parity plan per workspace before applying anything; investigate any drift
• •Keep both binaries installed during migration so rollback is trivial at every step

Generated with AI, which can make mistakes.