Question

A DevOps engineer writes Terraform configuration to provision three EC2 instances. After running 'terraform apply' successfully, a teammate runs 'terraform apply' again without changing any code or infrastructure. What behavior should the engineer expect, and which IaC principle explains it?

Accepted Answer

Terraform will report that no changes are needed and make no modifications, demonstrating idempotency in a declarative approach.

Answer

Terraform will create three additional EC2 instances because each apply provisions new resources; this reflects the imperative model.

Answer

Terraform will destroy and recreate the three instances to guarantee a fresh state, reflecting immutable infrastructure.

Answer

Terraform will return an error because applying the same configuration twice is not permitted without '-force'.