Understanding the Terraform life cycle
As you have become familiar with how to use the Terraform CLI and run the respective Terraform commands, you must have also been wondering how Terraform creates or updates an infrastructure. Terraform follows a sequence of commands that are defined under the Terraform life cycle. Let's try to understand how the Terraform life cycle works with terraform init, terraform plan, terraform apply, and terraform destroy. A Terraform workflow starts with writing the Terraform code file, downloading all the providers and plugins, displaying in preview which actions Terraform is going to perform, and then—finally—whether you wish to deploy the resources that have been defined in the Terraform configuration code file. After creating or updating this infrastructure, let's suppose you wish to have these resources destroyed—how would you do this? All this can be clarified by following a Terraform workflow, which is depicted in...