networking.firewall.allowedTCPPorts = [3000];
  services.prometheus = {

  networking.firewall.allowedTCPPorts = [3000 9002 9000];
  services.prometheus =
      let servers = ["fedora" "wireguard"];
      in
  {

    scrapeConfigs = [{
      job_name = "systemd";
      static_configs = [{
        labels = {
          server = "wireguard";
        };
        targets = ["127.0.0.01:9002"];
      }];
    }];

    scrapeConfigs =
      builtins.map (server: {
          job_name = "${server}";
          static_configs = [{
            labels = {
              server = "${server}";
            };
            targets = ["${server}.server.home.arpa:9002"];
          }];
        }) servers;

        enabledCollectors = [ "systemd" ];

        enabledCollectors = ["systemd"];