Terraform config file provisioning SQL instance, Database and user

sql.tf

terraform {
  required_version  = ">=0.12.0"
}

provider "google" {
  credentials = "${file("${var.gcp_credentials}")}"
  project     = var.gcp_project
  region      = var.gcp_region
}

resource "random_pet" "grafana_db" {}

resource "google_sql_database_instance" "gcp_sql_db_instance" {
  name              = random_pet.grafana_db.id
  database_version  = var.gcp_db_instance_version
  
  settings {
    tier  = var.gcp_db_instance_tier

    ip_configuration {
      ipv4_enabled  = var.gcp_db_instance_ipv4_enabled

      dynamic "authorized_networks" {
        for_each  = var.gcp_db_instance_authorized_networks

        content {
          name    = authorized_networks.key
          value   = authorized_networks.value
        }
      }
      private_network = var.gcp_db_instance_private_network
    }
  }
}

resource "google_sql_database" "gcp_sql_database" {
  name      = var.gcp_sql_database_name
  instance  = google_sql_database_instance.gcp_sql_db_instance.self_link
}

resource "google_sql_user" "gcp_sql_user" {
  instance  = google_sql_database_instance.gcp_sql_db_instance.name
  name      = var.gcp_sql_user_name
  password  = base64encode(var.gcp_sql_user_password)
}