Terraform Interview Questions

What is Terraform and why is it used?

What is the difference between terraform plan and terraform apply?

What is Terraform state? Why is it important?

What are Terraform providers? Give examples.

What is the difference between terraform destroy and removing a resource from config?

What are Terraform variables and how do you pass them?

What are Terraform outputs?

What is a Terraform module? Why use modules?

What is a remote backend in Terraform? Why use it?

How does Terraform handle dependencies between resources?

What is terraform init and what does it do?

What is the terraform.tfvars file?

What is HCL and how is it different from JSON/YAML?

What is the difference between resource, data, variable, local, and output blocks?

What is terraform console and when would you use it?

What are Terraform workspaces?

Explain the terraform state commands you use most.

What is terraform import? How do you use it?

What is the lifecycle meta-argument in Terraform?

What is terraform taint and terraform replace?

How do you handle sensitive values in Terraform?

What is a data source in Terraform?

Explain count vs for_each in Terraform.

How do you structure Terraform code for large projects?

What is terraform fmt and terraform validate?

What is the terraform.lock.hcl file?

How does Terraform handle state locking?

What are local values (locals) in Terraform?

How do you use dynamic blocks in Terraform?

What are Terraform functions? Give useful examples.

What is the for expression in Terraform?

How do you manage Terraform provider versions?

What is the splat expression in Terraform?

What is Terragrunt and why is it used?

How do you manage Terraform state for multiple AWS accounts?

What is a Terraform provider alias and when do you use it?

How do you test Terraform code?

What is Terraform drift and how do you handle it?

How do you refactor Terraform code without destroying resources?

What is Terraform's resource graph and how does it work?

How does Terraform Cloud differ from open-source Terraform?

Explain Terraform's approach to zero-downtime deployments.

What is the difference between terraform apply -refresh=false and -refresh-only?

How do you version Terraform modules?

What is a null_resource and terraform_data in Terraform?

How do you debug Terraform issues?

What are provisioners in Terraform and why should you avoid them?

How do you handle Terraform in CI/CD pipelines?

How do you share outputs between Terraform configurations?

What security best practices should you follow with Terraform?