Configure Custom Backend

By default, TF-controller will use the Kubernetes backend to store the Terraform state file (tfstate) in the cluster. The tfstate is stored in a Secret named "tfstate-${workspace}-${secretSuffix}", where the default suffix is the name of the Terraform resource.

You can override this default suffix by setting .spec.backendConfig.secretSuffix in the Terraform object. The default workspace name is "default", but you can also override the workspace by setting .spec.workspace to a different value.

If you want to use a custom backend, such as GCS or S3, you can configure it by defining .spec.backendConfig.customConfiguration in the Terraform object.

Here is an example of how to use a custom backend with the Terraform object:

apiVersion: infra.contrib.fluxcd.io/v1alpha1
kind: Terraform
metadata:
  name: helloworld
  namespace: flux-system
spec:
  approvePlan: auto
  backendConfig:
    customConfiguration: |
      backend "s3" {
        bucket                      = "s3-terraform-state1"
        key                         = "dev/terraform.tfstate"
        region                      = "us-east-1"
        endpoint                    = "http://localhost:4566"
        skip_credentials_validation = true
        skip_metadata_api_check     = true
        force_path_style            = true
        dynamodb_table              = "terraformlock"
        dynamodb_endpoint           = "http://localhost:4566"
        encrypt                     = true
      }
  interval: 1m
  path: ./
  sourceRef:
    kind: GitRepository
    name: helloworld
    namespace: flux-system
  runnerPodTemplate:
    spec:
      image: registry.io/tf-runner:xyz

In this example, the Terraform object is using a custom backend with a bucket named "s3-terraform-state1" in the "us-east-1" region, with the key "dev/terraform.tfstate".