working nextcloud backups

hosts/Alaska/default.nix

@@ -18,6 +18,21 @@
     ./modules/vaultwarden.nix
   ];
 
+  programs.alaska_backup_script = {
+    enable = true;
+    run_nightly = false;
+    tmp_mount_point = /Aurora/backup_drive_mount_point;
+    backup1_drive_label = "AlaskaBackup";
+
+    nextcloud = {
+      root_dir = /Aurora/nextcloud;
+      db_server = "127.0.0.1";
+      db_name = "nextcloud";
+      db_user = "nextcloud";
+      db_passfile = /Aurora/nextcloud/nextcloud_db_password;
+    };
+  };
+
   networking.hosts = {
     "100.64.0.1" = ["files.nickiel.net" "git.nickiel.net" "nickiel.net" "jellyfin.nickiel.net" ];
   };
@@ -27,6 +42,7 @@
     #pkgs.jellyfin-ffmpeg
     pkgs.hddtemp
     pkgs.smartmontools
+    pkgs.screen
   ];
 
   services.xserver.videoDrivers = [ "nvidia" ];

hosts/Alaska/modules/backup_script.nix

@@ -4,16 +4,9 @@ let
   cfg = config.programs.alaska_backup_script;
 in
 {
+
   options.programs.alaska_backup_script = {
     enable = lib.mkEnableOption (lib.mdDoc "Alaska Backup Script service");
-    package = lib.mkOption {
-      type = lib.types.package;
-      default = self.packages.${system}.alaska_backup_script;
-      defaultText = "pkgs.alaska_backup_script";
-      description = lib.mkDoc ''
-        the alaska backup script
-      '';
-    };
 
     run_nightly = lib.mkOption {
       type = lib.types.bool;
@@ -78,75 +71,76 @@ in
     };
   };
 
-
   config = lib.mkIf cfg.enable {
-    stdenv.mkDerivation rec {
-      name = "alaska_backup_script";
-      version = "1.0";
 
-      # runtimeInputs = [ pkgs.rsync ];
-
-      installPhase = "
-        mkdir -p $out/bin 
-        install $src/bin/${name} $out/bin
-      ";
-      
-      src = (pkgs.writeScriptBin "${name}" ''
-        #!/bin/sh
-        echo "Created the temporary mount point if it does not exit"
-        mkdir -p ${builtins.toString cfg.tmp_mount_point}
-
-        echo "Mounting the external backup drive"
-        mount /dev/disk/by-label/${cfg.backup1_drive_label} ${builtins.toString cfg.tmp_mount_point}
-
-      
-        echo "Puttin nextcloud into maintenance mode so that changes cannot happen during the backup"
-        nextcloud-occ maintenance:mode --on
-
-        echo "Backing up the nextcloud database"
-        password='cat ${builtins.toString cfg.nextcloud.db_passfile}'
-        PGPASSWORD="$password" pg_dump \
-          ${builtins.toString cfg.nextcloud.db_name} -h ${builtins.toString cfg.nextcloud.db_server} \
-          -U ${builtins.toString cfg.nextcloud.db_user} \
-          -f ${builtins.toString cfg.tmp_mount_point}/nextcloud-sqlbkp_`date + "%Y%m%d"`.bak
-
-        echo "Backing up the nextcloud files"
-        # -a archive | -v verbose
-        rsync -av ${builtins.toString cfg.nextcloud.root_dir} \
-          ${builtins.toString cfg.tmp_mount_point}/nextcloud
-
-        echo "Get nextcloud out of maintenance mode so that normal operations can resume"
+    systemd.services.alaska_backup_script_onfail = {
+      description = "Clean up permissions on script fail";
+      path = with pkgs; [
+        config.services.nextcloud.occ 
+        umount
+      ];
+      script = ''
         nextcloud-occ maintenance:mode --off
 
         echo "Unmounting the external drive"
         umount ${cfg.tmp_mount_point}
-
-        echo "Job completed"
-      ''
-      ).overriteAttrs(old: {
-        buildCommand = "${old.buildCommand}\n patchShebangs $out";
-      });
+      '';
     };
 
-      config.systemd.services.alaska_backup_script = let
-        pkg = self.packages.${system}.alaska_backup_script;
-      in lib.mkIf cfg.run_nightly {
-        description = "Alaska Nightly Backup Service";
-        serviceConfig = {
-          Type = "oneshot";
-          ExecStart = ''
-            ${pkgs.lib.makeBinPath [ pkgs.screen ]}/bin/screen -dmS AlaskaBackupJob ${pkgs.lib.makeBinPath [ pkgs.bash ]}/bash -c "${cfg.alaska_backup_script.package.out}/alaska_backup_script"
-          '';
-        };
-      };
+    systemd.services.alaska_backup_script = {
+      description = "Alaska Nightly Backup Service";
+      onFailure = [ "alaska_backup_script_onfail.service" ];
+      path = with pkgs; [
+        config.services.nextcloud.occ 
+        config.services.postgresql.package
+        rsync
+        mount 
+        umount
+      ];
+      script = ''
+        # ${pkgs.lib.makeBinPath [ pkgs.screen ]}/screen -dmS AlaskaBackupJob \
+        # ${pkgs.lib.makeBinPath [ pkgs.bash ]}/bash -c "
+          echo "Created the temporary mount point if it does not exit"
+          mkdir -p ${builtins.toString cfg.tmp_mount_point}
 
-      config.systemd.timers.alaska_backup_script = let
-        pkg = self.packages.${system}.alaska_backup_script;
-      in lib.mkIf cfg.run_nightly {
-        wantedBy = [ "timers.target" ];
-        partOf = [ "alaska_backup_script.service" ];
-        # timerConfig.OnCalendar
-      };
+          echo "Mounting the external backup drive"
+          mount /dev/disk/by-label/${cfg.backup1_drive_label} ${builtins.toString cfg.tmp_mount_point}
+
+          echo "Puttin nextcloud into maintenance mode so that changes cannot happen during the backup"
+          nextcloud-occ maintenance:mode --on
+
+          echo "Backing up the nextcloud database"
+          password='cat ${builtins.toString cfg.nextcloud.db_passfile}'
+          PGPASSWORD="$password" pg_dump \
+          ${builtins.toString cfg.nextcloud.db_name} -h ${builtins.toString cfg.nextcloud.db_server} \
+          -U ${builtins.toString cfg.nextcloud.db_user} \
+          -f ${builtins.toString cfg.tmp_mount_point}/nextcloud-sqlbkp_`date +"%Y%m%d"`.bak
+
+          echo "Backing up the nextcloud files"
+          # -a archive | -v verbose
+          rsync -av ${builtins.toString cfg.nextcloud.root_dir} \
+            ${builtins.toString cfg.tmp_mount_point}/nextcloud
+
+          echo "Get nextcloud out of maintenance mode so that normal operations can resume"
+          nextcloud-occ maintenance:mode --off
+
+          echo "Unmounting the external drive"
+          umount ${cfg.tmp_mount_point}
+
+          echo "Job completed"
+          # "
+      '';
+      startAt = "Sun 14:00:00";
+
+      # serviceConfig = {
+        # Type = "oneshot";
+      # };
     };
+
+    # config.systemd.timers.alaska_backup_script = lib.mkIf cfg.run_nightly {
+      # wantedBy = [ "timers.target" ];
+      # partOf = [ "alaska_backup_script.service" ];
+      # timerConfig.OnCalendar
+    # };
   };
 }