(notes from 2017) terraform makefile for running same codebase across separate envs

Makefile

.PHONY: help

help:
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

init: ## Initializes the terraform remote state backend and pulls the correct environments state.
	@if [ -z ${env} ]; then echo "env was not set" ; exit 10 ; fi
	@rm -rf .terraform/*.tf*
	@terraform init \
        -backend-config=environments/${env}/backend.conf

format: ## Fix terraform file content format
	@terraform fmt

update: ## Gets any module updates
	@terraform get -update=true &>/dev/null

validate: init update ## Validates a plan.
	@terraform validate -input=false -var-file=environments/${env}/inputs.tfvars

plan: init update ## Runs a plan.
	@terraform plan -input=false -refresh=true -module-depth=-1 -var-file=environments/${env}/inputs.tfvars

plan-destroy: init update ## Shows what a destroy would do.
	@terraform plan -input=false -refresh=true -module-depth=-1 -destroy -var-file=environments/${env}/inputs.tfvars

show: init ## Shows a module
	@terraform show -module-depth=-1

graph: ## Runs the terraform grapher
	@rm -f graph.png
	@terraform graph -draw-cycles -module-depth=-1 | dot -Tpng > graph.png
	@open graph.png

apply: init update ## Applies a new state.
	@terraform apply -input=true -refresh=true -var-file=environments/${env}/inputs.tfvars

output: update ## Show outputs of a module or the entire state.
	@if [ -z $(MODULE) ]; then terraform output ; else terraform output -module=$(MODULE) ; fi

destroy: init update ## Destroys targets
	@terraform destroy -var-file=environments/${env}/inputs.tfvars -force