Remote state data source for cross-project in Terraform - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a remote state data source in Terraform?

A remote state data source lets Terraform read the saved state of infrastructure from another project or workspace. This helps share information between projects safely.

beginner

Why use remote state data source for cross-project references?

It allows one Terraform project to access outputs or resources from another project without duplicating resources or manual syncing.

intermediate

Which backend is commonly used for storing remote state in Terraform for cross-project access?

Backends like AWS S3, Google Cloud Storage, or Terraform Cloud are commonly used to store remote state securely and allow cross-project access.

intermediate

What is the key block to define a remote state data source in Terraform?

The key block is `data "terraform_remote_state"` which specifies the backend and configuration to read the remote state.

advanced

How do you ensure security when accessing remote state across projects?

Use proper access controls on the backend storage, encrypt state files, and limit permissions to only what is needed for reading state.

What Terraform block is used to access remote state from another project?

A output "remote_state"

B data "terraform_remote_state"

C resource "remote_state"

D module "remote_state"

The `data "terraform_remote_state"` block is used to read remote state data from another project or workspace.

Which of these is NOT a common backend for storing Terraform remote state?

A Local file system

B AWS S3

C Terraform Cloud

D Google Cloud Storage

Local file system is not suitable for cross-project remote state sharing because it is not accessible remotely.

Why is remote state important for cross-project Terraform setups?

A To store logs

B To speed up Terraform runs

C To share resource outputs between projects

D To avoid writing Terraform code

Remote state allows sharing outputs or resource information between projects to coordinate infrastructure.

What must you configure in the remote state data source to access a specific project’s state?

A Output variables

B Terraform version

C Resource tags

D Backend type and configuration details

You must specify the backend type (like S3) and its configuration (bucket, key, region) to access the remote state.

How can you protect sensitive data in remote state files?

A Encrypt the state file and restrict access permissions

B Store state files locally

C Use plain text files

D Share state files publicly

Encrypting state files and restricting access ensures sensitive data is protected when using remote state.

Explain how to configure a Terraform remote state data source to read state from another project.

Think about the backend and how Terraform reads remote state.

Describe best practices for securely sharing Terraform remote state across projects.

Focus on security and access control.