Terraform is an open-source infrastructure as code or IaC tool created by HashiCorp. Terraform helps us build, change, and version cloud and on-prem resources efficiently and safely. We then have a consistent workflow to provision and manage our infrastructure throughout its lifecycle. This article focuses on Terraform interview questions to help you get ready for your interview.
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In this article, we’ll cover:
Here are some Terraform interview questions and answers to give you an idea of what to expect:
The core workflow of Terraform has three steps. The first is to write and includes creating infrastructure in code. The second is to plan and involves planning ahead of time to check how the changes may look before implementing them. Lastly, the third is to apply, which deals with creating a repeatable infrastructure.
Based on the needs and the situation, we can prevent Error Duplicate Resource in three ways. We can delete the resource so Terraform code stops managing it. Alternatively, we can discard the resource from the APIs. We can also use import action to get rid of the resource.
The ".terraform" directory refers to a local cache. Terraform stores some files needed for subsequent operations against this configuration in this directory. Its contents are not a part of version control.
Terraform supports version control tools like GitHub, GitLab CE, GitLab EE, and Bucket Cloud.
A module in Terraform is a container for numerous resources that come in usage together. For example, we need the root module for every Terraform that involves resources referenced in the .tf files.
Here are some basic Terraform interview questions to get you started:
Next, check out these advanced Terraform interview questions to gauge your preparation level:
Lastly, make sure you can answer these technical interview questions before your Terraform interview:
Q1. What does Terraform do?
Terraform creates an implementation plan and defines what it will need to do to attain the preferred state. It then executes the plan to construct the described infrastructure. Terraform checks what changed with configuration changes and generates practical and incremental execution plans.
Q2. Is it possible to have callbacks with Terraform on Azure?
Yes, we can have callbacks on Azure with Terraform with the help of the Azure Event Hubs.
Q3. Can we use Terraform for on-prem infrastructure?
Yes, we can utilize Terraform for on-prem infrastructure, and there are providers available to choose from.
Q4. How can we check the version of Terraform that’s running?
We can use the command terraform -version to get the version of Terraform that’s running.
Q5. What are some key competitors of Terraform?
Ansible, Kubernetes, Packer, and Cloud Foundry are some key competitors of Terraform.
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