nix-config/hosts/m3-nix/services/prometheus-node.nix

{
  services.prometheus.exporters.node = {
    enable = true;
    port = 8081;
    enabledCollectors = ["logind" "systemd"];
    disabledCollectors = ["textfile"];
    openFirewall = true;
    firewallFilter = "-i br0 -p tcp -m tcp --dport 8081";
  };
}