Add backups for monitoring01

Flake lock file updates:

• Updated input 'backup-helper':
    'git+https://git.t-juice.club/torjus/backup-helper?ref=master&rev=945a5ea3dddc4baefb2e11ff7ca130304b22ab22' (2025-01-27)
  → 'git+https://git.t-juice.club/torjus/backup-helper?ref=master&rev=f9540cc065692c7ca80735e7b08399459e0ea6d6' (2025-01-27)

flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1727998045,
-        "narHash": "sha256-BOvQHqs50Hk1sevvuJQai83kYuwTN27FTgmTitPsJtw=",
+        "lastModified": 1738015166,
+        "narHash": "sha256-573tR4aXNjILKvYnjZUM5DZZME2H6YTHJkUKs3ZehFU=",
         "ref": "master",
-        "rev": "162c35769cc06b117b6753eb93460af650b64921",
-        "revCount": 31,
+        "rev": "f9540cc065692c7ca80735e7b08399459e0ea6d6",
+        "revCount": 35,
         "type": "git",
         "url": "https://git.t-juice.club/torjus/backup-helper"
       },
@@ -23,11 +23,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1737672001,
-        "narHash": "sha256-YnHJJ19wqmibLQdUeq9xzE6CjrMA568KN/lFPuSVs4I=",
+        "lastModified": 1737885640,
+        "narHash": "sha256-GFzPxJzTd1rPIVD4IW+GwJlyGwBDV1Tj5FLYwDQQ9sM=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "035f8c0853c2977b24ffc4d0a42c74f00b182cd8",
+        "rev": "4e96537f163fad24ed9eb317798a79afc85b51b7",
         "type": "github"
       },
       "original": {

flake.nix

@@ -229,6 +229,7 @@
             )
             ./hosts/monitoring01
             sops-nix.nixosModules.sops
+            backup-helper.nixosModules.backup-helper
           ];
         };
         jelly01 = nixpkgs.lib.nixosSystem {

hosts/monitoring01/configuration.nix

@@ -51,10 +51,24 @@
     vim
     wget
     git
+    sqlite
   ];
 
   services.qemuGuest.enable = true;
 
+  sops.secrets."backup_helper_secret" = { };
+  backup-helper = {
+    enable = true;
+    password-file = "/run/secrets/backup_helper_secret";
+    backup-dirs = [
+      "/var/lib/grafana/plugins"
+    ];
+    backup-commands = [
+      # "grafana.db:${pkgs.sqlite}/bin/sqlite /var/lib/grafana/data/grafana.db .dump"
+      "grafana.db:${pkgs.sqlite}/bin/sqlite3 /var/lib/grafana/data/grafana.db .dump"
+    ];
+  };
+
   # Open ports in the firewall.
   # networking.firewall.allowedTCPPorts = [ ... ];
   # networking.firewall.allowedUDPPorts = [ ... ];