How to add remote .tfstate

Gitlab

create a gitlab token with api endpoint

Terraform

add a backend to your 00_providers.tf

terraform {
  required_providers {
    openstack = {
      source  = "terraform-provider-openstack/openstack"
      version = "1.44.0"
    }
  }
  backend "http" {
    address = "https://gitlab.com/api/v4/projects/<projectID>/terraform/state/state"
    lock_address = "https://gitlab.com/api/v4/projects/<projectID>/terraform/state/state/lock"
    unlock_address = "https://gitlab.com/api/v4/projects/<projectID>/terraform/state/state/lock"
    lock_method = "POST"
    unlock_method = "DELETE"
    retry_wait_min = 5
  }
}

update your *-openrc.sh by adding the following at the end

export TF_HTTP_USERNAME=<gitlab username>
export TF_HTTP_PASSWORD=<gitlab token>

source the *-openrc.sh file

run init the state

terraform init

go check your gitlab and see if there is a .tfstatew