hosts/mermet/sanoid.nix

   1 { pkgs, lib, config, inputs, ... }:
   2 let
   3   inherit (builtins) readFile;
   4   inherit (config.users) users groups;
   5 in
   6 {
   7 users.users.backup = {
   8   isSystemUser = true;
   9   shell = users.root.shell;
  10   group = groups.disk.name;
  11   openssh.authorizedKeys.keys = [
  12     (readFile (inputs.secrets + "/hosts/losurdo/ssh/backup.ssh-ed25519.pub"))
  13   ] ++ users."julm".openssh.authorizedKeys.keys;
  14 };
  15 systemd.tmpfiles.rules = [
  16   "z /dev/zfs 0660 - ${groups."disk".name}  -"
  17 ];
  18 system.activationScripts.backup = ''
  19   ${pkgs.zfs}/bin/zfs allow -u ${users.backup.name} bookmark,hold,send rpool
  20   ${pkgs.zfs}/bin/zfs allow -u ${users.backup.name} receive,create,mount,rollback rpool/backup
  21 '';
  22
  23 systemd.services.sanoid.serviceConfig.SupplementaryGroups = [ groups."disk".name ];
  24 services.sanoid = {
  25   enable = true;
  26   templates = {
  27     local = {
  28       autosnap = true;
  29       autoprune = true;
  30       monthly = 3;
  31     };
  32     remote = {
  33       autosnap = false;
  34       autoprune = true;
  35       monthly = 3;
  36     };
  37   };
  38   extraArgs = [
  39     "--verbose"
  40     #"--debug"
  41   ];
  42   datasets = {
  43     "rpool/backup/losurdo/var/postgresql" = {
  44       use_template = [ "remote" ];
  45       daily = 31;
  46     };
  47     "rpool/backup/losurdo/var/cryptpad" = {
  48       use_template = [ "remote" ];
  49       daily = 31;
  50       monthly = 0;
  51     };
  52   };
  53 };
  54 }