Terraform destroy for cleanup - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ service_behavior

intermediate

What happens when you run terraform destroy?

You have applied a Terraform configuration that created several cloud resources. Now you run terraform destroy. What is the expected result?

A Terraform deletes all resources it created according to the state file.

B Terraform only deletes resources that are manually tagged for deletion.

C Terraform archives the resources but does not delete them.

D Terraform creates a backup of resources and leaves them running.

💡 Hint

Think about what Terraform tracks and how it manages resources.

Terraform destroy uses the state file to identify and delete all resources it manages, cleaning up the infrastructure.

❓ Configuration

intermediate

Which command safely destroys resources with confirmation?

You want to destroy your Terraform-managed infrastructure but want to ensure you confirm before deletion. Which command should you use?

A terraform destroy -auto-approve

B terraform apply -destroy

C terraform delete

D terraform destroy

💡 Hint

Consider which command asks for confirmation by default.

The command 'terraform destroy' asks for confirmation before deleting resources unless '-auto-approve' is used.

❓ security

advanced

What is a best practice to avoid accidental resource deletion with terraform destroy?

You want to prevent accidental destruction of critical resources when running terraform destroy. Which approach is best?

A Run <code>terraform destroy</code> with <code>-auto-approve</code> to speed up deletion.

B Use resource lifecycle block with <code>prevent_destroy = true</code> on critical resources.

C Remove the state file before running <code>terraform destroy</code>.

D Manually delete resources in the cloud console before running <code>terraform destroy</code>.

💡 Hint

Think about how Terraform can protect resources from deletion.

Setting prevent_destroy = true in the lifecycle block stops Terraform from deleting those resources, preventing accidents.

❓ Architecture

advanced

How does Terraform handle dependencies during terraform destroy?

When destroying resources, how does Terraform manage the order of deletion to avoid errors?

A Terraform deletes resources in reverse order of creation based on dependency graph.

B Terraform deletes all resources simultaneously without order.

C Terraform deletes resources alphabetically by resource name.

D Terraform requires manual deletion order specified by the user.

💡 Hint

Think about how Terraform tracks resource relationships.

Terraform builds a dependency graph and deletes resources in reverse order to respect dependencies and avoid errors.

✅ Best Practice

expert

What is the recommended way to clean up Terraform-managed infrastructure in a CI/CD pipeline?

You want to automate infrastructure cleanup in a CI/CD pipeline after tests complete. Which approach follows best practices?

A Remove Terraform state files from the pipeline workspace to trigger cleanup.

B Manually run <code>terraform destroy</code> on local machine after pipeline finishes.

C Run <code>terraform destroy -auto-approve</code> with proper state backend configured and environment variables securely set.

D Delete cloud resources directly via cloud provider console after pipeline.

💡 Hint

Consider automation, security, and state management.

Automating terraform destroy with auto-approve and secure state backend ensures reliable, repeatable cleanup in pipelines.