Terraform Notes

README.md

Terraform Apply

• terraform apply -auto-approve

Terraform Plan

• terraform plan -out plan.out -> save the plan
• terraform show -json plan.out > plan.json -> write the plan as json

Terraform State

• terraform show -json | jq -C | less -R -> show the state with pretty colors
• terraform state list -> show resources in the state
• terraform plan -replace="<resource_name>" -> replaces resources from the state file (v0.15.2+ - older versions taint/untaint)
• terraform state mv -> move states
• terraform plan -refresh-only -> configuration drift between infra and the state(check changes)
• terraform apply -refresh-only -> apply changes from infra to the state file.
• Resource Lifecycle
  • reate_before_destroy = true
  • prevent_destroy = true
  • ignore_changes - For changes outside the Terraform workflow that should not impact Terraform operations

Terraform Import

• terraform import -var-file <vars>.tfvars <resource> <resource_id>