terraform

terraform

Setup

brew install terraform

Verify installation:

terraform --version

Resources

Workflow

Command	Description
terraform init	Initialize working directory and download providers
terraform init -upgrade	Upgrade providers to latest allowed versions
terraform plan	Preview changes without applying
terraform plan -out=tfplan	Save plan to a file
terraform apply	Apply changes with confirmation prompt
terraform apply -auto-approve	Apply changes without confirmation
terraform apply tfplan	Apply a saved plan file
terraform destroy	Destroy all managed infrastructure
terraform destroy -auto-approve	Destroy without confirmation
terraform destroy -target=aws_instance.example	Destroy a specific resource

Validation and Formatting

Command	Description
terraform fmt	Format configuration files
terraform fmt -recursive	Format files in all subdirectories
terraform fmt -check	Check formatting without modifying
terraform validate	Validate configuration syntax

State Management

Command	Description
terraform show	Show current state or a saved plan
terraform show -json	Show state as JSON
terraform state list	List all resources in state
terraform state show <resource>	Show details of a resource in state
terraform state mv <source> <destination>	Move a resource in state
terraform state rm <resource>	Remove a resource from state
terraform state pull	Pull remote state to stdout
terraform state push	Push local state to remote

Import and Output

Command	Description
terraform import <resource> <id>	Import existing infrastructure into state
terraform output	Show all output values
terraform output <name>	Show a specific output value
terraform output -json	Show outputs as JSON

Workspaces

Command	Description
terraform workspace list	List all workspaces
terraform workspace show	Show current workspace
terraform workspace new <name>	Create a new workspace
terraform workspace select <name>	Switch to a workspace
terraform workspace delete <name>	Delete a workspace

Other

Command	Description
terraform graph	Generate a visual dependency graph
terraform providers	Show required providers
terraform refresh	Refresh state against real infrastructure
terraform taint <resource>	Mark a resource for recreation
terraform untaint <resource>	Remove taint from a resource

Global Flags

Flag	Description
-var 'key=value'	Set a variable value
-var-file=<file>	Load variables from a file
-target=<resource>	Target a specific resource
-parallelism=<n>	Limit concurrent operations
-json	Output in JSON format
-no-color	Disable colored output