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What is Infrastructure as Code with Terraform?
Infrastructure as code (IaC) tools allow you
to manage infrastructure with configuration files rather than through a
graphical user interface. IaC allows you to build, change, and manage your
infrastructure in a safe, consistent, and repeatable way by defining resource
configurations that you can version, reuse, and share.
Terraform is
HashiCorp's infrastructure as a code tool. It lets you define resources and infrastructure in
human-readable, declarative configuration files, and manages your
infrastructure's lifecycle. Using Terraform has several advantages over
manually managing your infrastructure:
·
Terraform can manage
infrastructure on multiple cloud platforms.
·
The human-readable configuration
language helps you write infrastructure code quickly.
·
Terraforms state allows you to
track resource changes throughout your deployments.
·
You can commit your configurations
to version control to safely collaborate on infrastructure.
Manage any
infrastructure
Terraform
plugins called providers let Terraform interact with cloud platforms and other
services via their application programming interfaces (APIs).
Standardize your
deployment workflow
Providers define individual units of
infrastructure, for example, compute instances or private networks, as
resources.
Terraforms configuration language is
declarative, meaning that it describes the desired end-state for your
infrastructure, in contrast to procedural programming languages that require
step-by-step instructions to perform tasks. Terraform providers automatically
calculate dependencies between resources to create or destroy them in the
correct order.
To deploy infrastructure with Terraform:
·
Scope - Identify the infrastructure for your project.
·
Author - Write the configuration for your infrastructure.
·
Initialize - Install the plugins Terraform needs to manage the
infrastructure.
·
Plan - Preview the changes Terraform will make to match your configuration.
·
Apply - Make the planned changes.
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