Terraform General Command

Initialization & Setup

• Initialize a Terraform project:

  terraform init
• Reinitialize and upgrade providers:

  terraform init -upgrade
• Validate the Terraform configuration:

  terraform validate
• Format Terraform files:

  terraform fmt
• Check the execution plan:

  terraform plan

Applying & Destroying Resources

• Apply changes to the infrastructure:

  terraform apply
• Auto-approve an apply:

  terraform apply -auto-approve
• Destroy resources:

  terraform destroy
• Auto-approve a destroy:

  terraform destroy -auto-approve
• Remove resources that were deleted outside Terraform:

  terraform refresh

Resource & State Management

• Show Terraform state:

  terraform show
• Show state of a specific resource:

  terraform state show <resource_type>.<resource_name>
• List all resources in state:

  terraform state list
• Remove a resource from state (without deleting it in the cloud):

  terraform state rm <resource_type>.<resource_name>
• Import an existing resource into Terraform state:

  terraform import <resource_type>.<resource_name> <resource_id>
• Refresh terraform state to match real-world infrastructure:

  terraform refresh
• Mark a resource for recreation:

  terraform taint <resource_type>.<resource_name>
• Remove the taint from a resource:

  terraform untaint <resource_type>.<resource_name>

Output & Variables Management

• View Terraform outputs:

  terraform output
• Get a specific output:

  terraform output <output_name>
• Set environment variables for Terraform:

  export TF_VAR_<variable_name>=<value>
• Use a .tfvars file:

  terraform apply -var-file="config.tfvars"

Debugging & Logging

• Enable debugging logs:

  export TF_LOG=DEBUG
• Enable logging to a file:

  export TF_LOG_PATH="terraform.log"

Workspace Management

• List all Terraform workspaces:

  terraform workspace list
• Show the current workspace:

  terraform workspace show
• Create a new workspace:

  terraform workspace new <workspace_name>
• Switch to a different workspace:

  terraform workspace select <workspace_name>
• Delete a workspace:

  terraform workspace delete <workspace_name>

Remote State Management

• Enable remote backend configuration:

  terraform {
    backend "s3" {
      bucket = "my-tf-state-bucket"
      key    = "terraform.tfstate"
      region = "us-east-1"
    }
  }
• Pull latest remote state:

  terraform state pull
• Push local state to remote backend:

  terraform state push

Cleanup & Maintenance

• Remove all generated files:

  rm -rf .terraform/
• Remove the state file (use with caution!):

  rm terraform.tfstate*