Terraform Commands
Terraform is a powerful open-source tool for building, changing, and versioning infrastructure safely and efficiently. It is a declarative Infrastructure as Code (IaC) tool that enables you to define your desired infrastructure state in configuration files, which Terraform then provisions and manages across various cloud providers and services.
Initialize Terraform Configuration
The terraform init
command is the first step in any Terraform project. It initializes the working directory, downloading any necessary provider plugins and modules required by your configuration.
terraform init
Format Terraform Configuration
Maintain a consistent code style across your Terraform projects with terraform fmt
. This command reformats your configuration files into a canonical format, making them easier to read and manage.
terraform fmt
Validate Terraform Configuration
Ensure your Terraform configuration is syntactically correct and logically sound before applying changes using terraform validate
. This command checks for errors in your configuration files.
terraform validate
Apply Terraform Configuration
The terraform apply
command creates or updates infrastructure based on your Terraform configuration. It shows you a plan of what actions will be taken and prompts for confirmation before proceeding.
terraform apply
Destroy Terraform Configuration
When you no longer need the infrastructure managed by Terraform, use terraform destroy
to safely remove all resources defined in your configuration. This command also provides a plan and requires confirmation.
terraform destroy
Upgrade Terraform Providers
Providers are distributed separately from the Terraform binary. To upgrade your Terraform providers to the latest versions, use the -upgrade
flag with terraform init
.
terraform init -upgrade
Update Terraform Modules
Modules are reusable units of Terraform configuration. To update your Terraform modules to the latest available versions, use the -update
flag with the terraform get
command.
terraform get -update
By mastering these fundamental Terraform commands, you can effectively manage your cloud infrastructure, ensuring consistency, reliability, and efficiency in your DevOps workflows.