51 Terraform Interview Questions And Answers 2024

1: What is Terraform?

2: Why you should use Terraform?

 3: What are the reasons for choosing Terraform for DevOps?

4: What do you mean by Terraform init?

5: Name some major competitors of Terraform?

6: What is Terraform provider?

7: How does Terraform work?

8: What are the features of Terraform?

9: What do you mean by IaC?

10: Describe the working of Terraform core?

11:  What are the key features of Terraform?

12: What are the use cases of Terraform?

13: How to check the installed version of Terraform?

 14: What are the most useful Terraform commands?

15: How does Terraform help in discovering plugins?

16: Can I add policies to the open-source or pro version of Terraform enterprise?

17: Define Modules in Terraform?

18: What are the ways to lock Terraform module versions?

19: What do you mean by Terraform cloud?

 20: Define null resource in Terraform?

 21: Can Terraform be used for on-prem infrastructure?

 22 : What does the following command do?

 23: List all the Terraform-supported versions

 24: Explain the command terraform validate in the context of Terraform.

25: Mention some of the version control tools supported by Terraform.

26: How would you recover from a failed apply in Terraform?

27: What do you mean by Terragrunt, list some of its use cases?

28: What steps should be followed for making an object of one module to be available for the other module at a high level?

29: What is State File Locking?

30: What is a Remote Backend in Terraform?

31: What is a Tainted Resource?

32: Are callbacks possible with Terraform on Azure?

 33: How to prevent Error Duplicate Resource

34: Explain the workflow of the core terraform.

35: Explain the architecture of Terraform request flow.

36: Differentiate between Terraform and Cloudformation.

37: Differentiate between Terraform and Ansible.

38: What are the most useful Terraform commands ?

39: Are callbacks possible with Terraform on Azure ?

40: What is Terraform Directory?

41: Is history the same as it is on the web while using TFS API to provide resources ?

42: What is a Private Module Registry?

 43: Does Terraform support multi-provider deployments?

44: How is duplicate resource error ignored during terraform apply ?

45: What are Provisioners in Terraform?

46: What are some of the built-in provisioners available in Terraform?

47: Tell us about some notable Terraform applications.

48: What are the components of Terraform architecture?

49: Define Resource Graph in Terraform.

50: Can you provide a few examples where we can use for Sentinel policies?

51: What are the various levels of Sentinel enforcement?

Terraform Interview Questions And Answers

1. What is Terraform?

Ans. Terraform is an open-source Infrastructure as Code (IaC) tool developed by HashiCorp. It allows users to define and provision infrastructure using a declarative configuration language.

2.Why should you use Terraform?

Ans.

• Terraform provides a consistent and reproducible method for managing infrastructure.
• It supports multi-cloud environments and various infrastructure providers.
• Infrastructure can be versioned and stored in code repositories, promoting collaboration and version control.

3.Reasons for choosing Terraform for DevOps:

Ans.

• Infrastructure as Code (IaC) approach.
• Multi-cloud support.
• Declarative configuration.
• Collaboration and version control.
• Automation of provisioning and management tasks.

4.What do you mean by Terraform init?

Ans.

terraform init is a command used to initialize a Terraform working directory. It downloads necessary providers and initializes the backend, preparing the directory for Terraform configuration.

5.Major competitors of Terraform:

Ans.

• Ansible
• Chef
• Puppet
• CloudFormation (AWS)
• Pulumi

6.What is Terraform provider?

Ans.

A Terraform provider is a plugin that allows Terraform to interact with a specific infrastructure platform or service. Providers define the available resources and how they are managed.

7.How does Terraform work?

Ans.

Terraform works by reading configuration files (written in HashiCorp Configuration Language – HCL) and creating a plan to provision or modify infrastructure. The plan is then applied to bring the infrastructure to the desired state.

8.Features of Terraform:

Ans.

• Infrastructure as Code (IaC)
• Declarative configuration
• Multi-cloud support
• Plan and apply workflow
• Resource graph to visualize dependencies
• State management for tracking infrastructure changes

9.What do you mean by IaC?

Ans.

Infrastructure as Code (IaC) is an approach to managing and provisioning infrastructure through machine-readable script files. It allows infrastructure to be defined, versioned, and managed in a code-like manner.

10.Describe the working of Terraform core:

Ans.Terraform core is responsible for reading configuration files, creating an execution plan, and applying the plan to bring infrastructure to the desired state. It interacts with providers to manage resources on different platforms.

11. Key features of Terraform:

Ans.

• Infrastructure as Code
• Multi-cloud and multi-provider support
• Plan and apply workflow
• Resource graph and dependency management
• State management for tracking infrastructure changes

12.Use cases of Terraform:

Ans.

• Provisioning and managing cloud infrastructure
• Continuous integration and deployment (CI/CD) pipelines
• Scaling and updating infrastructure
• Managing networking configurations
• Collaboration on infrastructure changes

13.How to check the installed version of Terraform?

Ans.

Use the command: terraform version

14.Most useful Terraform commands:

Ans.

• terraform init
• terraform plan
• terraform apply
• terraform destroy
• terraform validate

15.How does Terraform help in discovering plugins?

Ans. Terraform automatically discovers and installs provider plugins by reading the configuration files. When a new provider is referenced, Terraform fetches and installs the necessary plugin.

16.Can I add policies to the open-source or pro version of Terraform Enterprise?

Ans.Yes, Terraform Enterprise allows the addition of policies to control and govern infrastructure provisioning.

17.Define Modules in Terraform?

Ans.Modules in Terraform are reusable components that encapsulate a set of resources and their configurations. They promote code organization and maintainability.

18.Ways to lock Terraform module versions:

Ans.

• Use version constraints in the module source URL.
• Use Terraform configurations that pin the version of a module.

19.What do you mean by Terraform Cloud?

Ans.

Terraform Cloud is a SaaS platform by HashiCorp that provides collaboration, governance, and automation features for Terraform projects. It includes a private registry for sharing modules.

20.Define null resource in Terraform?

Ans.null_resource is a resource type in Terraform that allows for the execution of arbitrary code during the lifecycle of a Terraform apply.

21.Can Terraform be used for on-prem infrastructure?

Ans. Yes, Terraform can be used to manage on-premises infrastructure by defining and provisioning resources using the appropriate providers.

22. What does the following command do?

Ans. The question seems to be incomplete. If you provide the command, I can help explain its purpose.