rclone: synchronize restic repo to GCS

Add a couple of secrets to store the configuration and the service
account, and add a timer to synchronize the restic repository to a GCS
bucket once a day.

4 files changed, 32 insertions, 0 deletions

diff --git a/hosts/common/server/rclone.nix b/hosts/common/server/rclone.nix
new file mode 100644
index 0000000..5e1a4d6
--- /dev/null
+++ b/hosts/common/server/rclone.nix
@@ -0,0 +1,29 @@
+{ config, pkgs, lib, ... }:
+
+{
+  environment.systemPackages = with pkgs; [ rclone ];
+
+  age.secrets.rclone-gcs-sa.file =
+    ../../../secrets/rclone/gcs_service_account.json.age;
+
+  age.secrets.rclone-config.file = ../../../secrets/rclone/config.ini.age;
+
+  systemd = {
+    timers.rclone-sync = {
+      wantedBy = [ "timers.target" ];
+      partOf = [ "rclone-sync.service" ];
+      timerConfig = { OnCalendar = "02:00"; };
+    };
+    services.rclone-sync = let rcloneOptions = "--fast-list --verbose";
+    in {
+      serviceConfig.Type = "oneshot";
+      serviceConfig.Environment = {
+        RCLONE_GCS_SERVICE_ACCOUNT_CREDENTIALS =
+          config.age.secrets.rclone-gcs-sa.path;
+      };
+      script = ''
+        ${pkgs.rclone}/bin/rclone --config=${age.secrets.rclone-config.path} sync ${rcloneOptions} /data/slow/backups gbackup:fcuny-backups
+      '';
+    };
+  };
+}
diff --git a/secrets.nix b/secrets.nix
index 7a45923..ae0efaf 100644
--- a/secrets.nix
+++ b/secrets.nix
@@ -22,4 +22,7 @@ in {
   "secrets/unifi/unifi-poller.age".publicKeys = [ fcuny_aptos aptos tahoe ];
 
   "secrets/restic/repo-systems.age".publicKeys = [ fcuny_aptos aptos tahoe ];
+  "secrets/rclone/config.ini.age".publicKeys = [ fcuny_aptos aptos tahoe ];
+  "secrets/rclone/gcs_service_account.json.age".publicKeys =
+    [ fcuny_aptos aptos tahoe ];
 }
diff --git a/secrets/rclone/config.ini.age b/secrets/rclone/config.ini.age
new file mode 100644
index 0000000..a017b29
--- /dev/null
+++ b/secrets/rclone/config.ini.age
diff --git a/secrets/rclone/gcs_service_account.json.age b/secrets/rclone/gcs_service_account.json.age
new file mode 100644
index 0000000..982dd30
--- /dev/null
+++ b/secrets/rclone/gcs_service_account.json.age