learn-terraform-aws-instance - no default vpc, S3 backend version

refernce

https://developer.hashicorp.com/terraform/tutorials/aws-get-started/aws-build

Environment variables

envrionment variable name	default	detail
TF_VAR_project-name	learn-terraform-aws-instance	Used to all resource name prefix.
TF_VAR_cost-tag-value	cost-responsible-dept-or-username	Tag value for "Cost"
TFSTATE_BUCKET	-	Terraform S3 backend for .tfstate file
TFSTATE_KEY	-	Terraform s3 backend S3 prefix(path).
TFSTATE_REGION	-	Terraform S3 backend bucket region.

setup

Before this procedure , you will set envrionment variables explain before. Like below.

export TF_VAR_project_name="learn-terraform-aws-ec2-instance"
export TF_VAR_cost_tag_value="cost-responsible-username"
export TFSTATE_BUCKET="your-original-s3-bucket-name-for-tfstate-backend"
export TFSTATE_KEY="s3-file-prefix-of-tfstate-file/learn-terraform-aws-ec2-instance.tfstate"
export TFSTATE_REGION="<s3-bucket-aws-region>"

Run terraform init with backend setting.

terraform init \
-backend-config="bucket"="${TFSTATE_BUCKET}" \
-backend-config="key"="${TFSTATE_KEY}" \
-backend-config="region"="${TFSTATE_REGION}"

Then apply

terraform apply