tfmigrate を Homebrew でインストール

プロジェクトリンク

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• tfmigrate

プロジェクトの歴史

The project was created to address a common production Terraform problem: state manipulations are unavoidable during refactoring, but raw `terraform state` commands are error-prone and do not fit well into pull-request and CI/CD workflows. tfmigrate's README explicitly argues that state operations should be committed to git.

The tool wraps Terraform or OpenTofu under the hood rather than reimplementing their state mechanics. It supports dry-run planning with temporary local state, migration history, local/S3/GCS storage for applied migration records, monorepo-style state splits and merges, and migration files written as HCL.

Recent release notes show continuing maintenance for the changing Terraform ecosystem, including support for OpenTofu versions, Terraform 1.11 through 1.15, Terragrunt CLI redesign handling, configurable environment injection into `.tfmigrate.hcl`, and GitHub Actions and Go toolchain updates.

採用の歴史

The repository shows more than a thousand GitHub stars and is packaged by Homebrew, MacPorts, and Nix in the input metadata. That adoption profile fits a tool used by infrastructure teams with long-lived Terraform states and CI-based review.

tfmigrate's appeal is strongest for teams that already use GitOps: it lets state migrations travel with the configuration change they support, instead of being performed manually before or after a merge.

使われ方

The documented workflow is to write a migration file such as `state_mv.hcl`, run `tfmigrate plan` to verify the state operation against Terraform plan output without updating remote state, and then run `tfmigrate apply` to push the migrated state when the plan is clean.

tfmigrate can invoke `terraform`, `tofu`, or Terragrunt via `TFMIGRATE_EXEC_PATH`, and the README recommends trying the included sandbox before using the tool on production state.

パッケージ好きにとっての重要性

tfmigrate is important in package metadata because it solves a lifecycle problem that plain Terraform intentionally leaves low-level. It turns one-off state surgery into reviewable, repeatable migration files.

As a package-manager tool, it is most useful when installed in CI images and developer machines beside Terraform/OpenTofu, making the same state migration command available during local rehearsal and automated review.

タイムライン

• 2025: v0.4.2 release notes add OpenTofu 1.9, Terraform 1.11, Terragrunt CLI redesign handling, and environment injection into `.tfmigrate.hcl`.
• 2025: v0.4.3 release notes add OpenTofu 1.10 and Terraform 1.12 support.
• 2025: v0.4.4 release notes add OpenTofu 1.11 and Terraform 1.14 support.
• 2026: v0.4.5 is listed as the latest release and includes Terraform 1.15 support.

Related projects

• Terraform and OpenTofu are the execution engines tfmigrate invokes.
• Terragrunt is supported through `TFMIGRATE_EXEC_PATH` with version-specific guidance.
• Digger is mentioned in recent release notes as an integration example.

ソース

• https://github.com/minamijoyo/tfmigrate
• https://github.com/minamijoyo/tfmigrate/releases
• source_facts.package-manager