cli

• tf fmt -recursive
• tf output outpust
• tf modules -json retrieves list of modules used by the configuration
• terraform version not terraform --version
• terraform show
  • Provides humand readable output from a state file or plan file
  • -json
• terraform state show [options] address
  • Specific resource in the statefile
• terraform refresh
  • reads from remote
  • deprecated
    • terraform plan -refresh-only same as terraform refresh and the options are pretty much the same

terraform apply -refresh-only -auto-approve // automatically updates the state file without prompting

• terraform import
  • Manually setup a resource block to import resources into
  • and then
• terraform force-unlock unlocks the state file by force
  • -force don’t ask for confirmation
• terraform apply
  • -replace=aws_instance.web marks an resource for replacement, forces replacement of a resource
• terraform destroy
  • speculative plan terraform destroy -plan
  • alias for terraform apply -destroy, doesn’t plan file argument
  • -target option targets a specific resource
    • tf destroy -target=aws_instance.example
• terraform state command can be used to modify the state
  • also show, list, pull
  • mv
    • terraform state mv aws_s3_bucket.data-bucket aws_s3_bucket.prod-encrypted-data-s3-bucket
    • Moves the the existing state object to the new local name specified, ensuring that Terraform does not replace the resource.
• this is how’d you save plan to a file terraform plan -out=bryan
  • terraform apply 'bryan'
• terraform get is something that you’d wanna use if you JUST want to pull new modules. But terraform init can do it by self.
• terraform plan
  • -refresh-only refreshes the state file, matches the infra
• terrafomrm workspace
  • terraform workspace new command will create a new workspace
  • installs separate cache for plugins and modules
  • common use case
    • would be to use different workspace for different environment such as prod and non prod env
    • would be use separate workspace for separate branches
  • for community version stores it on
    • terraform.tfstate.d/<workspace name>
• terraform console
  • Launches a interactive console
  • Acquires a state lock as it reads from state
  • Remote state can aslo be read