Terraform

Terraform tracks your infrastracture with state files. These state files are the source of truth of your infrastructure.

Sources

• https://github.com/devops-cheat-sheets/terraform-cheat-sheet
• https://www.pluralsight.com/resources/blog/cloud/the-ultimate-terraform-cheatsheet
• https://developer.hashicorp.com/terraform/intro
• https://developer.hashicorp.com/terraform/language/state

Commands

Command	Description	Example
terraform init	Initialize working directory (install modules, providers)
terraform login	Login to Terraform Cloud
terraform plan	Create execution plan
terraform apply	Applies changes to reach desired state
terraform apply -target=	Apply specific resource/target
terraform apply -auto-approve	Applies changes, no approval required
terraform fmt	Format .tf files
terraform import	Import existing infrastracture into Terraform State	terraform import aws_s3_bucket.bucket mybucket
terraform output	Show output variables from Terraform State
terraform apply -var ‘variable=value’	Set variable from CLI
terraform apply -var-file=file	Set variables via File (prod.tfvars)
terraform state	Advanced Terraform State Management
terraform state list	List resources in state