it-infra/backupdl-module.nix

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2024-01-17 13:50:36 +08:00
{ config, pkgs, lib, ... }:
with lib;
let
makeBackup = pkgs.writeScript "make-backupdl" ''
#!${pkgs.bash}/bin/bash
set -e
export PATH=${pkgs.rsync}/bin:${pkgs.openssh}/bin
FILENAME=backup-`${pkgs.coreutils}/bin/date +%F`.tar.bz2.gpg
ssh nixbld.m-labs.hk mlabs-backup > /hdd/backupdl/backupdl/$FILENAME
rsync -az nixbld.m-labs.hk:/var/lib/nextcloud/data /hdd/backupdl/nextcloud
'';
cfg = config.services.backupdl;
in
{
options.services.backupdl = {
enable = mkOption {
type = types.bool;
default = false;
description = "Enable backups";
};
};
config = mkIf cfg.enable {
systemd.services.backupdl = {
description = "Nixbld backups download";
serviceConfig = {
Type = "oneshot";
User = "backupdl";
Group = "backupdl";
ExecStart = "${makeBackup}";
};
};
users.users.backupdl = {
name = "backupdl";
group = "backupdl";
description = "Nixbld backups download";
isSystemUser = true;
createHome = true;
home = "/hdd/backupdl";
useDefaultShell = true;
};
users.extraGroups.backupdl = {};
systemd.timers.backupdl = {
description = "Nixbld backups download";
wantedBy = [ "timers.target" ];
timerConfig.OnCalendar = "wednesday,sunday *-*-* 08:00:00";
};
};
}