{ config, pkgs, ... }: {
  # Enable Prometheus exporters
  services.prometheus = {
    exporters = {
      node = {
        enable = true;
        enabledCollectors = [ "systemd" ];
        port = 9002;
      };
    };
  };

  networking.firewall.allowedTCPPorts =
    [ config.services.prometheus.exporters.node.port ];
}