Atmos Terraform and OpenTofu Orchestration

Atmos wraps the Terraform or OpenTofu CLI to provide stack-aware orchestration of infrastructure operations. Instead of manually managing workspaces, backends, variable files, and authentication for each component, Atmos resolves the full configuration from stack manifests and handles all of these concerns automatically.

Everything in this skill applies identically to Terraform and OpenTofu. The atmos terraform command namespace is the same regardless of which binary is configured -- atmos terraform plan runs tofu plan when the binary is set to tofu. Use the user's terminology in responses (if they say "OpenTofu," say "OpenTofu").

Terraform or OpenTofu: Binary Selection

Atmos defaults to the terraform binary. Switch to OpenTofu by setting components.terraform.command: tofu in atmos.yaml. The setting cascades through CLI > env > config > defaults precedence and can be overridden at multiple levels for mixed setups.

Global (whole project on OpenTofu)