terraform {
  required_version = ">= 0.14.0" # Takes into account Terraform versions from 0.14.0
  required_providers {
    openstack = {
      source  = "terraform-provider-openstack/openstack"
      version = "~> 1.43.0"
    }
  }
}

provider "openstack" {
  allow_reauth = false
  token        = "xxxxxxxxxxxx"
}

resource "openstack_compute_instance_v2" "test-server" {
  # ...
}