Configuring global config for terraform itself, allowing consistency across teams and environment
- terraform and provider versions
- backend config (state location)
- provider requirements
terraform {
required_version = "~> 1.10.0"
required_providers {
aws = {
source = "hashicorp/aws"
version = "5.87.0"
}
}
# store the state at s3
backend "s3" {
bucket = "prd-terraform-east-2"
key = "state/terraform.tfstate"
region = "us-east-2"
}
}
https://developer.hashicorp.com/terraform/language/terraform
Version constraints
- required_version = “1.10.0” # only 1.10.0
- required_version = ”⇒ 1.10.0” # all versions >= this version 1.11.0/ 1.12.0…
- required_version = ”~> 1.10.0” # all patches within the same versions, e.g. ok for 1.10.5, but no for 1.11.0
Use terraform init -upgrade to upgrade the the version, after modifying the version number
The backend block inside terraform block defines where Terraform stores its state data files, which is default as “local”. (terraform.tfstate)
Example - save in S3:
terraform {
backend "s3" {
bucket = ""
key = ""
region = ""
profile= ""
}
}