Convert lewis to kubernetes node

Install tmux on servers
Mount jellyfin media locally

configuration.nix

@@ -80,6 +80,7 @@
       fio
       libva-utils
       jq
+      tmux
     ];
 
     boot = lib.mkIf (! machine.isRaspberryPi) {

kubenix-modules/base.nix

@@ -49,7 +49,7 @@
               defaultDataPath = "/mnt/longhorn";
               storageMinimalAvailablePercentage = 0;
               allowRecurringJobWhileVolumeDetached = true;
-              backupTarget = "nfs://lewis.dmz:/mnt/data/nfs/longhorn-backup";
+              backupTarget = "nfs://lewis.dmz:/mnt/longhorn/persistent/longhorn-backup";
             };
 
             persistence = {

kubenix-modules/custom/nfs-volume.nix

@@ -26,7 +26,7 @@ in
 
             nfs = {
               server = "lewis.dmz";
-              path = "/mnt/data/nfs/${nfsVolume.path}";
+              path = "/mnt/longhorn/persistent/${nfsVolume.path}";
             };
           };
         })

kubenix-modules/media.nix

@@ -77,13 +77,24 @@
 
               volumes = {
                 config.persistentVolumeClaim.claimName = "jellyfin";
-                media.persistentVolumeClaim.claimName = "media";
+                media.hostPath = {
+                  path = "/mnt/longhorn/persistent/media";
+                  type = "Directory";
+                };
               };
 
               securityContext = {
                 fsGroup = 0;
                 fsGroupChangePolicy = "OnRootMismatch";
               };
+
+              affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms = [{
+                matchExpressions = [{
+                  key = "hasMedia";
+                  operator = "In";
+                  values = [ "true" ];
+                }];
+              }];
             };
           };
         };

machines/atlas.nix

@@ -4,10 +4,6 @@
     kubernetesNodeLabels.storageType = "slow";
 
     nixosModule.lab = {
-      storage = {
-        kubernetesNode = true;
-      };
-
       k3s = {
         enable = true;
         serverAddr = "https://jefke.dmz:6443";

machines/jefke.nix

@@ -4,10 +4,6 @@
     kubernetesNodeLabels.storageType = "fast";
 
     nixosModule.lab = {
-      storage = {
-        kubernetesNode = true;
-      };
-
       k3s = {
         enable = true;
         clusterInit = true;

machines/lewis.nix

@@ -1,15 +1,19 @@
 {
   machines.lewis = {
     arch = "x86_64-linux";
+    kubernetesNodeLabels = {
+      storageType = "fast";
+      hasMedia = "true";
+    };
 
     nixosModule = {
       lab = {
         backups.enable = true;
         data-sharing.enable = true;
 
-        storage = {
-          osDisk = "/dev/sda";
-          dataPartition = "/dev/nvme0n1p1";
+        k3s = {
+          enable = true;
+          serverAddr = "https://jefke.dmz:6443";
         };
       };
     };

nixos-modules/backups.nix

@@ -1,19 +1,12 @@
 { pkgs, lib, config, ... }:
 let
   cfg = config.lab.backups;
-  beforeEverything = pkgs.writeShellScriptBin "beforeEverything" ''
-    if [ -d "${cfg.snapshotLocation}" ]; then
-      ${pkgs.btrfs-progs}/bin/btrfs subvolume delete ${cfg.snapshotLocation}
-    fi
-
-    ${pkgs.btrfs-progs}/bin/btrfs subvolume snapshot -r ${cfg.subvolumeLocation} ${cfg.snapshotLocation}
-  '';
 
   borgmaticConfig = pkgs.writeTextFile {
     name = "borgmatic-config.yaml";
 
     text = lib.generators.toYAML { } {
-      source_directories = [ cfg.snapshotLocation ];
+      source_directories = [ "/mnt/longhorn/persistent/longhorn-backup" ];
 
       repositories = [
         {
@@ -26,16 +19,12 @@ let
         }
       ];
 
-      exclude_patterns = [ "${cfg.snapshotLocation}/media" ];
       ssh_command = "${pkgs.openssh}/bin/ssh -i ${config.age.secrets."borgbase.pem".path} -o StrictHostKeychecking=no";
       keep_daily = 7;
       keep_weekly = 4;
       keep_monthly = 12;
       keep_yearly = -1;
       encryption_passcommand = "${pkgs.coreutils}/bin/cat ${config.age.secrets."borg_passphrase".path}";
-      before_everything = [ "${beforeEverything}/bin/beforeEverything" ];
-
-      postgresql_databases = [ ];
     };
   };
 in
@@ -50,32 +39,16 @@ in
     };
 
     repoLocation = lib.mkOption {
-      default = "${config.lab.storage.dataMountPoint}/backups/nfs.borg";
+      default = "/mnt/longhorn/persistent/nfs.borg";
       type = lib.types.str;
       description = ''
         Location of the Borg repository to back up to.
       '';
     };
-
-    subvolumeLocation = lib.mkOption {
-      default = "${config.lab.storage.dataMountPoint}/nfs";
-      type = lib.types.str;
-      description = ''
-        Location of the btrfs subvolume holding the data.
-      '';
-    };
-
-    snapshotLocation = lib.mkOption {
-      default = "${config.lab.storage.dataMountPoint}/snapshot-nfs";
-      type = lib.types.str;
-      description = ''
-        Location to (temporary) create a snapshot of the subvolume.
-      '';
-    };
   };
 
   config = lib.mkIf cfg.enable {
-    environment.systemPackages = with pkgs; [ borgbackup postgresql ];
+    environment.systemPackages = with pkgs; [ borgbackup ];
     # Converted from:
     # https://github.com/borgmatic-collective/borgmatic/tree/84823dfb912db650936e3492f6ead7e0e0d32a0f/sample/systemd
     systemd.services.borgmatic = {
@@ -84,7 +57,6 @@ in
       after = [ "network-online.target" ];
       unitConfig.ConditionACPower = true;
       preStart = "${pkgs.coreutils}/bin/sleep 10s";
-      path = with pkgs; [ postgresql ];
 
       serviceConfig = {
         Type = "oneshot";
@@ -95,7 +67,6 @@ in
         IOWeight = 100;
         Restart = "no";
         LogRateLimitIntervalSec = 0;
-        EnvironmentFile = config.age.secrets."database_passwords.env".path;
         Environment = "BORG_PASSPHRASE_FILE=${config.age.secrets."borg_passphrase".path}";
       };
 
@@ -113,7 +84,6 @@ in
     };
 
     age.secrets = {
-      "database_passwords.env".file = ../secrets/database_passwords.env.age;
       "borg_passphrase".file = ../secrets/borg_passphrase.age;
       "borgbase.pem".file = ../secrets/borgbase.pem.age;
     };

nixos-modules/data-sharing.nix

@@ -3,18 +3,18 @@ let
   cfg = config.lab.data-sharing;
 
   nfsShares = [
-    "/media"
-    "/media/books"
-    "/media/movies"
-    "/media/music"
-    "/media/shows"
-    "/longhorn-backup"
+    "/mnt/longhorn/persistent/media"
+    "/mnt/longhorn/persistent/media/books"
+    "/mnt/longhorn/persistent/media/movies"
+    "/mnt/longhorn/persistent/media/music"
+    "/mnt/longhorn/persistent/media/shows"
+    "/mnt/longhorn/persistent/longhorn-backup"
   ];
 
   nfsExports = lib.strings.concatLines (
     builtins.map
       (share:
-        "${cfg.nfsRoot}${share} 192.168.30.0/16(rw,sync,no_subtree_check,no_root_squash)"
+        "${share} 192.168.30.0/16(rw,sync,no_subtree_check,no_root_squash) 127.0.0.1/8(rw,sync,no_subtree_check,no_root_squash)"
       )
       nfsShares
   );
@@ -28,20 +28,11 @@ in
         Configure this server to serve our data using NFS and PostgreSQL.
       '';
     };
-
-    nfsRoot = lib.mkOption {
-      default = "/mnt/data/nfs";
-      type = lib.types.str;
-      description = ''
-        Root directory of NFS data.
-      '';
-    };
   };
 
   config = lib.mkIf cfg.enable {
     networking.firewall.allowedTCPPorts = [
       2049 # NFS
-      5432 # PostgeSQL
       111 # NFS
       20048 # NFS
     ];

nixos-modules/storage.nix

@@ -8,47 +8,16 @@ in {
         The disk to be used for the machine's operating system.
       '';
     };
-
-    dataPartition = lib.mkOption {
-      default = null;
-      type = lib.types.nullOr lib.types.str;
-      description = ''
-        Partition to be used for data storage on this machine.
-      '';
-    };
-
-    dataMountPoint = lib.mkOption {
-      default = "/mnt/data";
-      type = lib.types.str;
-      description = ''
-        Mount point of the machine's data partition.
-      '';
-    };
-
-    kubernetesNode = lib.mkOption {
-      default = false;
-      type = lib.types.bool;
-      description = ''
-        Whether to apply the Kubernetes disk setup.
-      '';
-    };
   };
 
   config = {
-    fileSystems = lib.attrsets.mergeAttrsList [
-      (lib.optionalAttrs ((! machine.isRaspberryPi) && (! cfg.kubernetesNode)) {
-        "${cfg.dataMountPoint}".device = cfg.dataPartition;
-      })
-      (lib.optionalAttrs machine.isRaspberryPi {
-        "/" = {
-          device = "/dev/disk/by-label/NIXOS_SD";
-          fsType = "ext4";
-          options = [ "noatime" ];
-        };
-      })
-    ];
+    fileSystems."/" = lib.mkIf machine.isRaspberryPi {
+      device = "/dev/disk/by-label/NIXOS_SD";
+      fsType = "ext4";
+      options = [ "noatime" ];
+    };
 
-    disko = lib.mkIf (! machine.isRaspberryPi) (if cfg.kubernetesNode then {
+    disko = lib.mkIf (! machine.isRaspberryPi) {
       devices = {
         disk = {
           nvme = {
@@ -148,41 +117,6 @@ in {
           };
         };
       };
-    } else {
-      # TODO: Rename this to 'osDisk'. Unfortunately, we would need to run nixos-anywhere again then.
-      devices.disk.vdb = {
-        device = cfg.osDisk;
-        type = "disk";
-
-        content = {
-          type = "gpt";
-
-          partitions = {
-            swap.size = "100%";
-
-            ESP = {
-              type = "EF00";
-              size = "500M";
-
-              content = {
-                type = "filesystem";
-                format = "vfat";
-                mountpoint = "/boot";
-              };
-            };
-
-            root = {
-              end = "-4G";
-
-              content = {
-                type = "filesystem";
-                format = "btrfs";
-                mountpoint = "/";
-              };
-            };
-          };
-        };
-      };
-    });
+    };
   };
 }

secrets/database_passwords.env.age

@@ -1,16 +0,0 @@
-age-encryption.org/v1
--> ssh-ed25519 UwNSRQ XKuX/onJklTJ1ws0svIwJy1PZN1MHsf5+N3z7XGvCyY
-JkyemSdV/ZcbjWLrwYLhKCE4Ln2seLR0WyYXGMepgBw
--> ssh-ed25519 JJ7S4A 9wzkTABOPcmTG7LNWvZa7dKG0Ingf+KDckZ1tL2c3QQ
-IkxcStI4kwXkWj+j3PWl7FdyoVMVsiH9SZBnyffbcYQ
--> ssh-ed25519 aqswPA 3i/v1qWLseD+FrPrnAXtSoK98a6Nrb3XrHinp2QPTn0
-RxuPM1oICEoF5oZAyQlCm+fOivI9sfZenZSlOGBIZK8
--> ssh-ed25519 LAPUww MkvAMN/fZiV66+ub4Q/CDTIxJ3N3cMWBT0SQajespR0
-uh6SGtxR3BvsU/fTTTOnsNXD+bHNYMhTAFoc3QUtMr8
--> ssh-ed25519 vBZj5g Jiu1sEmlws4eFPriuL2oS99Q9tFCyf4Zkv/khLONvT0
-cLLHcvmIb1Nb7eVmKJyYdvfulgbcZ73N0x6GWyKeJPs
--> ssh-ed25519 QP0PgA A1Raf1CiVJ5tnJXRIeS0VpCUNX/iYNzGozQxApY9KGM
-998c6IZfPNW8uMttkK8xGp1hgKXBcrwuBOgOpXWPCu8
---- /Qv6sfhphlYb9WtWdmPt6RZJPHxBO4jCSgauazsHIt8
-1kYiL7¸<37>Áª-Ç}—`ýŠƒÇNƒV‹oäCñ'ÞÛ§ýhßô[øvDŠU€pv×½¶Òõ¦~e‰Â0yœ¦ÿ—ÑÄ2`•Ý<E280A2>ºîƱŽïÑ¥ÂÔåú8›/´ª	¸
-÷MEÐŽh·sÈqÌâ¤|ßkتí<Ó°¡+ÊÍ9eË0󟑸;­)Ï?IL-ëÓJY¾gðpk+Ûí’úˆHRûé5ÔÍÉÛ¥ú”§„Ø×på :8·ùo©þ1¥zâs—`•_MSÒí«Q˜;Q_o]·

secrets/secrets.nix

@@ -8,7 +8,6 @@ let
   ];
 
   encryptedFileNames = [
-    "database_passwords.env.age"
     "borg_passphrase.age"
     "borgbase.pem.age"
     "k3s-server-token.age"