add yodaTuxHeadless

hive.nix

@@ -31,6 +31,17 @@ in
     };
   };
 
+  yodaTuxHeadless = { name, nodes, ... }: {
+    # Import the per-host configuration file.
+    imports = [ ./hosts/${name}/configuration.nix ];
+
+    deployment = {
+      # Local deployment.
+      allowLocalDeployment = true;
+      targetHost = null;
+    };
+  };
+
   yodaTab = { name, nodes, ... }: {
     # Import the per-host configuration file.
     imports = [ ./hosts/${name}/configuration.nix ];

hosts/yodaTux/configuration.nix

@@ -3,6 +3,7 @@
   imports =
     [
       ./hardware-configuration.nix
+      ./host-specific.nix
       ../../modules/tuxedo-rs.nix
       ../../modules/gpu-amd.nix
 
@@ -23,8 +24,6 @@
       #   - `reboot`
       # - Related: https://unix.stackexchange.com/a/667997
 
-      #./benchmark.nix
-
       ../../modules/base.nix
       ../../modules/base-efi-systemd.nix
       ../../modules/xdg.nix
@@ -86,16 +85,4 @@
       ../../modules/docker.nix
       ../../modules/docker-pushrm.nix
     ];
-
-  networking.hostName = "yodaTux";
-  boot.initrd.luks.devices."luks-ea7099e3-320d-4eb3-a4c3-9910a9af817b".allowDiscards = true;
-  yoda.btrfsFileSystems = ["/"];
-  #yoda.btrfsMounts = yoda.btrfsFileSystems;
-
-  # Systemd Journal entry:
-  # S Sat Sep 23 16:11:52 2023 p4 kernel: TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'.
-  boot.kernelParams = [ "tsc=unstable" ];
-
-  # Most users should never change this value after the initial install, for any reason, even if you've upgraded your system to a new NixOS release.
-  system.stateVersion = "23.05";
 }

hosts/yodaTux/host-specific.nix

@@ -0,0 +1,14 @@
+{ config, pkgs, ... }:
+{
+  networking.hostName = "yodaTux";
+  boot.initrd.luks.devices."luks-ea7099e3-320d-4eb3-a4c3-9910a9af817b".allowDiscards = true;
+  yoda.btrfsFileSystems = ["/"];
+  #yoda.btrfsMounts = yoda.btrfsFileSystems;
+
+  # Systemd Journal entry:
+  # S Sat Sep 23 16:11:52 2023 p4 kernel: TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'.
+  boot.kernelParams = [ "tsc=unstable" ];
+
+  # Most users should never change this value after the initial install, for any reason, even if you've upgraded your system to a new NixOS release.
+  system.stateVersion = "23.05";
+}

hosts/yodaTuxHeadless/configuration.nix

@@ -0,0 +1,18 @@
+{ config, pkgs, lib, ... }:
+{
+  imports = [
+    ./hardware-configuration.nix
+    ./host-specific.nix
+    #../../modules/tuxedo-rs.nix
+    #../../modules/gpu-amd.nix
+
+    ../../modules/base.nix
+    ../../modules/base-efi-systemd.nix
+    ../../modules/headless.nix
+
+    ./cpu-fixed-frequency.nix
+    ../../modules/java.nix
+  ];
+
+  boot.kernelPackages = pkgs.linuxPackages_latest;
+}

hosts/yodaTuxHeadless/cpu-fixed-frequency.nix

@@ -0,0 +1,29 @@
+{ config, pkgs, lib, ... }:
+{
+  #
+  # Pin CPU frequency
+  #
+
+  # https://unix.stackexchange.com/a/265611
+  # See current speed of each core:
+  #   watch -n.1 "grep \"^[c]pu MHz\" /proc/cpuinfo"
+  #
+  # https://wiki.archlinux.org/title/CPU_frequency_scaling#Userspace_tools
+
+  # Gnome uses power-profiles-daemon wich conflicts with tlp.
+  # https://discourse.nixos.org/t/cant-enable-tlp-when-upgrading-to-21-05/13435/3
+  services.power-profiles-daemon.enable = false;
+
+  services.tlp = {
+    enable = true;
+
+    # https://linrunner.de/tlp/settings/processor.html
+    settings = {
+      CPU_SCALING_MIN_FREQ_ON_AC = 1400000;
+      CPU_SCALING_MAX_FREQ_ON_AC = 1400000;
+
+      # Probably useless whenn setting fixed CPU freq above.
+      CPU_BOOST_ON_AC = 0;
+    };
+  };
+}

hosts/yodaTuxHeadless/hardware-configuration.nix

@@ -0,0 +1 @@
+../yodaTux/hardware-configuration.nix

hosts/yodaTuxHeadless/host-specific.nix

@@ -0,0 +1 @@
+../yodaTux/host-specific.nix