Terraform output
A Terraform output is a named value exposed by a module for display or consumption by other configurations or users.
Infrastructure as Code, Patterns and Practices: With examples in Python and Terraform
A Terraform output is a named value exported by a module for access by other configurations or users.
- How it is used
- Connects infrastructure modules by exporting selected resource attributes for dependent configurations and users.
- How deep it goes
- Explains outputs through dependency patterns, state JSON, and implementation examples, including abstraction trade-offs between modules.
- Examples
- Uses network names, subnet ranges, server creation, storage buckets, access-control rules, and Terraform state JSON.
- What you can do after
- Apply it via module outputs to pass infrastructure attributes while reducing direct references between resources.
Terraform in Depth: Infrastructure as Code with Terraform and OpenTofu
A Terraform output is a named configuration value exposed from a module for display or consumption by its caller.
- How it is used
- Exports module-created infrastructure attributes for reuse by callers configuring other resources or modules.
- How deep it goes
- Defines output arguments and caller access, explains state storage, and defers output preconditions.
- Examples
- Illustrates instance ARN, private IP, and whole-resource outputs, then uses the IP in a port-443 security-group rule.
- What you can do after
- Build it from scratch by exporting an instance attribute and using it in a security-group ingress rule.
Related concepts
- terraform_remote_stateproduced by · terraform_remote_state is a built-in Terraform data source that reads outputs from another Terraform state without modifying that state.
- moduleproduces · A module is a distinct, bounded software unit that groups related code or functionality and provides an organizational or interaction boundary within a larger system.
- facade patternused by · The facade pattern is a structural design pattern that provides a simplified interface to a complex subsystem or set of underlying components.
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