Creating Resources in terraform
Create Resource Dependencies
Infrastructure as Code with Terraform
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Terraform is the infrastructure as code offering from HashiCorp. It is a tool for building, changing, and managing infrastructure in a safe, repeatable way. Operators and Infrastructure teams can use Terraform to manage environments with a configuration language called the HashiCorp Configuration Language (HCL) for human-readable, automated deployments.
Infrastructure as code is the process of managing infrastructure in a file or files rather than manually configuring resources in a user interface. A resource in this instance is any piece of infrastructure in a given environment, such as a virtual machine, security group, network interface, etc. At a high level, Terraform allows operators to use HCL to author files containing definitions of their desired resources on almost any provider (AWS, Google Cloud, GitHub, Docker, etc.) and automates the creation of those resources at the time of apply.
A simple workflow for deployment will follow closely to the steps below:
Scope - Confirm what resources need to be created for a given project.
Author - Create the configuration file in HCL based on the scoped parameters.
Initialize - Run
terraform initin the project directory with the configuration files. This will download the correct provider plug-ins for the project.
Plan & Apply - Run
terraform planto verify creation process and then
terraform applyto create real resources as well as the state file that compares future changes in your configuration files to what actually exists in your deployment environment.
In this lab you will learn how to perform the following tasks:
Build, change, and destroy infrastructure with Terraform
Create Resource Dependencies with Terraform
Provision infrastructure with Terraform
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