Terraform is an open-source infrastructure as code (IaC) tool created by HashiCorp that enables users to define and manage their infrastructure in a declarative manner. It allows you to write code in a high-level language, called HashiCorp Configuration Language (HCL), to describe and provision infrastructure resources such as virtual machines, networks, load balancers, databases, and more. Terraform can manage resources across multiple cloud providers, as well as on-premises infrastructure.
Terraform follows a state-based approach to infrastructure management, where the desired state of the infrastructure is defined in code, and Terraform is responsible for bringing the actual infrastructure state to the desired state. It can automatically manage resource dependencies and ensure that resources are created, updated, or deleted in the correct order. Terraform also allows you to version control your infrastructure code, providing a complete audit trail of changes made to your infrastructure.
Terraform has become a popular tool for automating infrastructure management and is widely used by DevOps teams and system administrators.
To get started with Terraform, you can follow these steps:
terraform initcommand. This will initialize the working directory and download any necessary providers or modules.
terraform plancommand to see a preview of the changes that Terraform will make to your infrastructure. Once you're satisfied with the plan, run the
terraform applycommand to create the infrastructure.
terraform showcommand to view the current state of your infrastructure. You can also use the
terraform destroycommand to delete the infrastructure.
Terraform has extensive documentation and guides on their website that can help you get started. Additionally, there are many tutorials and resources available online to help you learn Terraform.