Files
nixos/modules/nixos/backup.nix
T

94 lines
2.1 KiB
Nix

{
lib,
config,
pkgs,
...
}:
let
cfg = config.greg.backup;
where = j: "${config.services.syncthing.dataDir}/daily.0/${j.dest}";
postexec = pkgs.writeShellApplication {
name = "postexec";
runtimeInputs = [ pkgs.coreutils ];
text = ''
chown -R ${config.services.syncthing.user} ${config.services.syncthing.dataDir}
'';
};
makeSyncFolders = _: job: {
devices = [ "chronicles" ];
enable = true;
id = job.id;
label = job.dest;
path = where job;
type = "sendonly";
};
makeRsnapshot = _: job: "backup ${job.src}/ ${job.dest}/";
in
with lib;
{
options = {
greg.backup = {
jobs = mkOption {
default = { };
type =
with types;
attrsOf (
submodule (
{ ... }:
{
options = {
src = mkOption {
type = types.str;
description = "Local path (string form) to backup from";
};
dest = mkOption { type = types.str; };
id = mkOption {
type = types.str;
description = "The unique folder ID for this";
};
};
}
)
);
};
};
};
config = mkIf ((attrValues cfg.jobs) != [ ]) {
age.secrets = {
restic-pw.file = ../../secrets/restic-pw.age;
restic-env.file = ../../secrets/restic-env.age;
};
greg.syncthing = {
enable = true;
};
services = {
syncthing.settings.folders = mapAttrs makeSyncFolders cfg.jobs;
rsnapshot = {
enable = true;
enableManualRsnapshot = true;
extraConfig =
''
snapshot_root ${config.services.syncthing.dataDir}/
retain daily 7
retain weekly 2
cmd_postexec ${lib.getExe postexec}
''
+ (builtins.concatStringsSep "\n" (mapAttrsToList makeRsnapshot cfg.jobs));
cronIntervals = {
daily = "19 02 * * *"; # At 2:19 am every day
weekly = "19 01 * * 1"; # At 1:19 am every Monday
};
};
};
};
}