Interview Questions and Answers

Terraform is an open-source infrastructure as code (IaC) tool used for building, changing, and versioning infrastructure efficiently.

A Terraform module is a reusable and self-contained collection of Terraform configurations used to define and provision a particular piece of infrastructure.

'terraform init' initializes a Terraform working directory, downloading necessary plugins and setting up the backend for storing the Terraform state.

A Terraform provider is a plugin that enables Terraform to interact with a specific cloud, infrastructure, or service provider, allowing resource creation and management.

A remote backend in Terraform is a centralized location where Terraform stores its state file. It allows collaboration among team members and supports features like locking and state versioning.

HCL (HashiCorp Configuration Language) is the language used to write configuration files in Terraform. It is designed to be easy to read and write for both humans and machines.

Interpolation syntax is used in Terraform to insert values into strings. Examples include '${}' for variable interpolation and '${resource.type.name}' for referencing resource attributes.

Terraform workspaces allow you to manage multiple instances of the same infrastructure in a single configuration. Each workspace has its own state file, making it useful for environment separation.

'terraform refresh' is used to reconcile the Terraform state with the real-world infrastructure. It updates the state file with the current state of the resources.

'terraform import' is used to import existing infrastructure into Terraform. It associates an existing resource with a Terraform resource configuration.

The 'depends_on' attribute in Terraform is used to explicitly specify the order in which resources should be created. It creates a dependency relationship between resources.

'terraform console' provides an interactive command-line interface for evaluating expressions and interpolations in the context of a Terraform configuration.

Terraform supports workspaces and variable files to manage different environments. Separate configuration files or folders can be used for each environment.

'terraform taint' marks a resource instance as tainted, indicating that it should be destroyed and recreated on the next 'terraform apply'.