nixos/modules/services/system/uptimed.nix

   1 { config, lib, pkgs, ... }:
   2
   3 with lib;
   4
   5 let
   6   cfg = config.services.uptimed;
   7   stateDir = "/var/lib/uptimed";
   8 in
   9 {
  10   options = {
  11     services.uptimed = {
  12       enable = mkOption {
  13         type = types.bool;
  14         default = false;
  15         description = ''
  16           Enable `uptimed`, allowing you to track
  17           your highest uptimes.
  18         '';
  19       };
  20     };
  21   };
  22
  23   config = mkIf cfg.enable {
  24
  25     environment.systemPackages = [ pkgs.uptimed ];
  26
  27     users.users.uptimed = {
  28       description = "Uptimed daemon user";
  29       home        = stateDir;
  30       uid         = config.ids.uids.uptimed;
  31       group       = "uptimed";
  32     };
  33     users.groups.uptimed = {};
  34
  35     systemd.services.uptimed = {
  36       unitConfig.Documentation = "man:uptimed(8) man:uprecords(1)";
  37       description = "uptimed service";
  38       wantedBy    = [ "multi-user.target" ];
  39
  40       serviceConfig = {
  41         Restart                 = "on-failure";
  42         User                    = "uptimed";
  43         Nice                    = 19;
  44         IOSchedulingClass       = "idle";
  45         PrivateTmp              = "yes";
  46         PrivateNetwork          = "yes";
  47         NoNewPrivileges         = "yes";
  48         StateDirectory          = [ "uptimed" ];
  49         InaccessibleDirectories = "/home";
  50         ExecStart               = "${pkgs.uptimed}/sbin/uptimed -f -p ${stateDir}/pid";
  51       };
  52
  53       preStart = ''
  54         if ! test -f ${stateDir}/bootid ; then
  55           ${pkgs.uptimed}/sbin/uptimed -b
  56         fi
  57       '';
  58     };
  59   };
  60 }