84 lines
1.9 KiB
Nix
84 lines
1.9 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.my.services.restic-backup;
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secrets = config.my.secrets;
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excludeArg = with builtins; with pkgs;
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"--exclude-file=" + (writeText "excludes.txt" (concatStringsSep "\n" cfg.exclude));
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makePruneOpts = pruneOpts:
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attrsets.mapAttrsToList (name: value: "--keep-${name} ${toString value}") pruneOpts;
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in {
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options.my.services.restic-backup = {
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enable = mkEnableOption "Enable Restic backups for this host";
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repo = mkOption {
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type = types.str;
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default = null;
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example = "/mnt/hdd";
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description = "Restic backup repo";
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};
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paths = mkOption {
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type = with types; listOf str;
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default = [ ];
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example = [
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"/var/lib"
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"/home"
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];
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description = "Paths to backup";
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};
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exclude = mkOption {
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type = with types; listOf str;
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default = [ ];
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example = [
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# very large paths
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"/var/lib/docker"
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"/var/lib/systemd"
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"/var/lib/libvirt"
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# temporary files created by `cargo` and `go build`
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"**/target"
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"/home/*/go/bin"
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"/home/*/go/pkg"
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];
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description = "Paths to exclude from backup";
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};
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prune = mkOption {
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type = types.attrs;
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default = {
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daily = 7;
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weekly = 4;
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monthly = 6;
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};
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};
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};
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config = mkIf cfg.enable {
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environment.systemPackages = [ pkgs.restic ];
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services.restic.backups.backblaze = {
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initialize = true;
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paths = cfg.paths;
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repository = cfg.repo;
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passwordFile = "/root/restic/password";
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environmentFile = "/root/restic/creds";
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extraBackupArgs = [ "--verbose=2" ]
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++ optional (builtins.length cfg.exclude != 0) excludeArg;
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timerConfig = {
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OnCalendar = "daily";
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};
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pruneOpts = makePruneOpts cfg.prune;
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};
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};
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}
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