387c55582b
Relates to b/147. First step towards giving depot modules the ability to declare their own backup directories by moving all restic configuration into a new module and adding a NixOS option for inclusion/exclusion paths for backups. This still keeps all backup paths within the whitby config. Change-Id: Ia96833668f1a3d02da892261153d8b02156b8ac0 Reviewed-on: https://cl.tvl.fyi/c/depot/+/3565 Tested-by: BuildkiteCI Reviewed-by: flokli <flokli@flokli.de>
57 lines
1.7 KiB
Nix
57 lines
1.7 KiB
Nix
# Configure restic backups to Google Cloud Storage.
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#
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# Conventions: Restic state is kept in /var/backup/restic, with
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# secrets in /var/backup/restic/secret.
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{ config, lib, pkgs, ... }:
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let
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cfg = config.services.depot.restic;
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description = "Restic backups to GCS";
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mkStringOption = default: lib.mkOption {
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inherit default;
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type = lib.types.string;
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};
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in {
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options.services.depot.restic = {
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enable = lib.mkEnableOption description;
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project = mkStringOption "tazjins-infrastructure";
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credentialPath = mkStringOption "/var/backup/restic/gcp-key.json";
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repository = mkStringOption "gs:tvl-fyi-backups:/whitby";
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interval = mkStringOption "hourly";
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paths = with lib; mkOption {
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description = "Directories that should be backed up";
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type = types.listOf types.string;
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};
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exclude = with lib; mkOption {
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description = "Files that should be excluded from backups";
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type = types.listOf types.string;
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};
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};
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config = lib.mkIf cfg.enable {
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# Regularly back up whitby to Google Cloud Storage.
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systemd.services.restic = {
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description = "Backups to Google Cloud Storage";
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script = "${pkgs.restic}/bin/restic backup ${lib.concatStringsSep " " cfg.paths}";
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environment = {
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GOOGLE_PROJECT_ID = cfg.project;
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GOOGLE_APPLICATION_CREDENTIALS = cfg.credentialPath;
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RESTIC_REPOSITORY = cfg.repository;
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RESTIC_PASSWORD_FILE = "/var/backup/restic/secret";
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RESTIC_CACHE_DIR = "/var/backup/restic/cache";
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RESTIC_EXCLUDE_FILE =
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builtins.toFile "exclude-files" (lib.concatStringsSep "\n" cfg.exclude);
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};
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};
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systemd.timers.restic = {
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wantedBy = [ "multi-user.target" ];
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timerConfig.OnCalendar = cfg.interval;
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};
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};
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}
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