configuration/services/backups.nix

@@ -24,24 +24,6 @@
       inherit name text;
       runtimeInputs = packages;
     });
-
-  # *NOT* a TOML file, for some reason quotes are interpreted
-  # *literally
-  rcloneConfig = pkgs.writeText "rclone.conf" ''
-    [storagebox]
-    type = sftp
-    user = u395933
-    host = u395933.your-storagebox.de
-    port = 23
-    key_file = ${config.sops.secrets."restic/storagebox-ssh-key".path}
-    shell_type = unix
-  '';
-
-  resticEnv = {
-    RESTIC_PASSWORD_FILE = config.sops.secrets."restic/storagebox-backups".path;
-    RESTIC_REPOSITORY = "rclone:storagebox:backups";
-    RCLONE_CONFIG = rcloneConfig;
-  };
 in {
   options = {
     services.backups = lib.mkOption {
@@ -138,11 +120,13 @@ in {
           # Doesn't hurt to finish the ongoing prune
           restartIfChanged = false;
 
-          environment = resticEnv;
+          environment = {
+            RESTIC_PASSWORD_FILE = config.sops.secrets."restic/local-backups".path;
+            RESTIC_REPOSITORY = "/var/lib/backups/";
+            RESTIC_CACHE_DIR = "%C/restic-prune";
+          };
 
           path = with pkgs; [
-            openssh
-            rclone
             restic
           ];
 
@@ -161,6 +145,11 @@ in {
 
             CacheDirectory = "restic-prune";
             CacheDirectoryMode = "0700";
+            ReadWritePaths = "/var/lib/backups/";
+
+            # Ensure we don't leave behind any files with the
+            # temporary UID of this service.
+            ExecStopPost = "+${pkgs.coreutils}/bin/chown -R root:backup /var/lib/backups/";
           };
         };
       }
@@ -169,24 +158,17 @@ in {
           # Don't want to restart mid-backup
           restartIfChanged = false;
 
-          environment =
+          environment = {
-            resticEnv
+            RESTIC_CACHE_DIR = "%C/backup-${name}";
-            // {
+            RESTIC_PASSWORD_FILE = config.sops.secrets."restic/local-backups".path;
-              RESTIC_CACHE_DIR = "%C/backup-${name}";
+            # TODO(tlater): If I ever add more than one repo, service
-            };
+            # shutdown/restarting will potentially break if multiple
+            # backups for the same service overlap. A more clever
+            # sentinel file with reference counts would probably solve
+            # this.
+            RESTIC_REPOSITORY = "/var/lib/backups/";
+          };
 
-          path = with pkgs; [
-            coreutils
-            openssh
-            rclone
-            restic
-          ];
-
-          # TODO(tlater): If I ever add more than one repo, service
-          # shutdown/restarting will potentially break if multiple
-          # backups for the same service overlap. A more clever
-          # sentinel file with reference counts would probably solve
-          # this.
           serviceConfig = {
             User = backup.user;
             Group = "backup";
@@ -201,8 +183,8 @@ in {
 
             ExecStartPre =
               map (service: "+${mkShutdownScript service}") backup.pauseServices
-              ++ singleton (writeScript "backup-${name}-repo-init" [] ''
+              ++ singleton (writeScript "backup-${name}-repo-init" [pkgs.restic pkgs.coreutils] ''
-                restic snapshots || restic init
+                restic snapshots || (restic init && chmod -R g+rwx "$RESTIC_REPOSITORY"/*)
               '')
               ++ optional (backup.preparation.text != null)
               (writeScript "backup-${name}-prepare" backup.preparation.packages backup.preparation.text);
@@ -238,14 +220,10 @@ in {
         })
       config.services.backups;
 
-    users = {
+    users.groups.backup = {};
-      # This user is only used to own the ssh key, because apparently
+
-      # the ssh client checks file permissions and is stuck in 1980.
+    systemd.tmpfiles.rules = [
-      users.backup = {
+      "d /var/lib/backups/ 0770 root backup"
-        group = "backup";
+    ];
-        isSystemUser = true;
-      };
-      groups.backup = {};
-    };
   };
 }

configuration/sops.nix

@@ -36,16 +36,6 @@
         group = "backup";
         mode = "0440";
       };
-      "restic/storagebox-backups" = {
-        owner = "root";
-        group = "backup";
-        mode = "0440";
-      };
-      "restic/storagebox-ssh-key" = {
-        owner = "backup";
-        group = "backup";
-        mode = "0040";
-      };
 
       # Steam
       "steam/tlater" = {};

flake.lock

@@ -354,11 +354,11 @@
         "nixpkgs-stable": "nixpkgs-stable"
       },
       "locked": {
-        "lastModified": 1710433464,
+        "lastModified": 1710039806,
-        "narHash": "sha256-IXlPoWgIRovZ32mYvqqdBgOQln71LouE/HBhbKc1wcw=",
+        "narHash": "sha256-vC2fo/phnetp6ub/nRv6mgAi5LbhJ6ujGQWrRD2VgNs=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "6c32d3b9c7593f4b466ec5404e59fc09a803a090",
+        "rev": "f8d5c8baa83fe620a28c0db633be9db3e34474b4",
         "type": "github"
       },
       "original": {

keys/production.yaml

@@ -14,8 +14,6 @@ wireguard:
     server-key: ENC[AES256_GCM,data:mXb7ZznJHf5CgV8rI4uzPBATMRbmd7LimgtCkQM9kAjbIaGwUBqJZBN3fXs=,iv:3Po1Orinzov9rnEm9cLzgJY1PeD+5Jl9115MriABHh8=,tag:E/2CjDO1JCvJzxCnqKcNyw==,type:str]
 restic:
     local-backups: ENC[AES256_GCM,data:NLNVlR9G9bLSZOkMoPvkbBbAZlKkmiUbdWHOFDnaefuy9wNLH53ctOIyS0rSsQLaJCSBTpgPSWIIXUSuzoK/eA==,iv:DzuujmyJJP4GiE5z7KOOGUEzUgOwmtf/7UYhwkyLe9g=,tag:cElFhpVC7S6HYlB6UyN7PQ==,type:str]
-    storagebox-backups: ENC[AES256_GCM,data:UyT8jCkKlfYJXjWLI9MbYfeVhY5d89N3aj1Olj54/aBOP3gwcrx6gU56Pwa1xKZ3lR13AVs/b4wF9sbvP7Kqqg==,iv:0HM+DgH4iCiWpjRvAYCFQGEy4xIBQwAM+PkkzOsizw0=,tag:jbrqo1In2O4jVM5e7fjOzg==,type:str]
-    storagebox-ssh-key: ENC[AES256_GCM,data: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,iv:OVnEIMFB4h/EQ8zV3XOpVXLDrV5t4roNYDFQz99m4sQ=,tag:mKWF12uD1TLla/MoJs2zNg==,type:str]
 turn:
     env: ENC[AES256_GCM,data:kt5nhVo9pb/ZbPUEcqSYXxN9YMgQKnFb5VRfFFS/qoIaJ73uD2fuJKqcxAyVRrdLqnSAWSQBgTgunBzdP7xqLAK2qt8DYAQWHkIe9uxFbSXZpdmw,iv:9lq6SFwTFN4GGm6gPiJpUMasMdnHVF6XLGYrsyG3kjU=,tag:428Qf9DOiiHt/Wjb188b8g==,type:str]
     secret: ENC[AES256_GCM,data:si7ee6Xfhdgdyzbp6aQpF7pz3TmTBb7iQ82lRPVXNDg9JfHI+lbmgAsSnRLX5qMCA6P9R045sSMosqidL8QwRg==,iv:SrhpZKK8D45yxCEfDb9P3TwtA14+qEI+wcRqcN/a6pw=,tag:PiwV+mOL9xHJgJft6sc61g==,type:str]
@@ -28,62 +26,67 @@ sops:
     azure_kv: []
     hc_vault: []
     age: []
-    lastmodified: "2024-03-18T04:05:08Z"
+    lastmodified: "2023-12-28T00:07:08Z"
-    mac: ENC[AES256_GCM,data:/v/XRBizRUn8UR1HOIaKrY11/5I8RmsctmxXg0wcCXO983YgcGYTEqfXOSRJzkh/MOjB0c8jpdfE7tyqYgB2iYjm+HmRFVsGNB484e+3ukAMsxz4CTz26RWC/LEemQeBOa5RB3rrPXXo1LrJCBN9Y+T/PVgO2xshUSxyhRFQmMA=,iv:km1m8k/vrCVT8ugvqAZNORLu0NSW66B58btH5k4e//Y=,tag:RZXviobM03IQXN1FwDUlVA==,type:str]
+    mac: ENC[AES256_GCM,data:P2bNJLjzn69Kg2bJHXmofER7J8wbEj9C4jq9ePWewXBOt45GEiqgnqIaISwZkyzQmm9cxZd95Lr780ICwoKDFdtSCCcC7CdYxYEfyyhnvU3W2qzEghvkypL8JbiEtPSlQ9xOlCk7p41A9eRrV+JziIVSv5UEUs4NubrG9Mkwv3k=,iv:Yq2gANTTgx6cFxkdustUZ1MPszxGSkao/bS1KHAkzJc=,tag:kqJibocgRQXkxTJze6O5MA==,type:str]
     pgp:
-        - created_at: "2024-03-18T04:02:00Z"
+        - created_at: "2024-03-02T21:16:50Z"
           enc: |-
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+        - created_at: "2024-03-02T21:16:50Z"
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