merlin: init host

hosts/merlin.rig.ts.hillion.co.uk/default.nix

@@ -0,0 +1,72 @@
+{ config, pkgs, lib, ... }:
+
+{
+  imports = [
+    ./disko.nix
+    ./hardware-configuration.nix
+  ];
+
+  config = {
+    system.stateVersion = "24.05";
+
+    networking.hostName = "merlin";
+    networking.domain = "rig.ts.hillion.co.uk";
+
+    boot.loader.systemd-boot.enable = true;
+    boot.loader.efi.canTouchEfiVariables = true;
+
+    boot.kernelParams = [
+      "ip=dhcp"
+
+      # zswap
+      "zswap.enabled=1"
+      "zswap.compressor=zstd"
+      "zswap.max_pool_percent=20"
+    ];
+    boot.initrd = {
+      availableKernelModules = [ "igc" ];
+      network.enable = true;
+      clevis = {
+        enable = true;
+        useTang = true;
+        devices = {
+          "disk0-crypt".secretFile = "/data/disk_encryption.jwe";
+        };
+      };
+    };
+
+    custom.defaults = true;
+    custom.locations.autoServe = true;
+    custom.impermanence.enable = true;
+
+    custom.users.jake.password = true;
+
+    # Networking
+    networking = {
+      interfaces.enp171s0.name = "eth0";
+      interfaces.enp172s0.name = "eth1";
+    };
+    networking.nameservers = lib.mkForce [ ]; # Trust the DHCP nameservers
+
+    networking.firewall = {
+      trustedInterfaces = [ "tailscale0" ];
+      allowedTCPPorts = lib.mkForce [
+        22 # SSH
+      ];
+      allowedUDPPorts = lib.mkForce [ ];
+      interfaces = {
+        eth0 = {
+          allowedTCPPorts = lib.mkForce [ ];
+          allowedUDPPorts = lib.mkForce [ ];
+        };
+      };
+    };
+
+    ## Tailscale
+    age.secrets."tailscale/merlin.rig.ts.hillion.co.uk".file = ../../secrets/tailscale/merlin.rig.ts.hillion.co.uk.age;
+    services.tailscale = {
+      enable = true;
+      authKeyFile = config.age.secrets."tailscale/merlin.rig.ts.hillion.co.uk".path;
+    };
+  };
+}

hosts/merlin.rig.ts.hillion.co.uk/disko.nix

@@ -0,0 +1,70 @@
+{
+  disko.devices = {
+    disk = {
+      disk0 = {
+        type = "disk";
+        device = "/dev/nvme0n1";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              size = "1G";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+
+            disk0-crypt = {
+              size = "100%";
+              content = {
+                type = "luks";
+                name = "disk1-crypt";
+                settings = {
+                  allowDiscards = true;
+                };
+
+                content = {
+                  type = "btrfs";
+
+                  subvolumes = {
+                    "/data" = {
+                      mountpoint = "/data";
+                      mountOptions = [ "compress=zstd" "ssd" ];
+                    };
+                    "/nix" = {
+                      mountpoint = "/nix";
+                      mountOptions = [ "compress=zstd" "ssd" ];
+                    };
+                  };
+                };
+              };
+            };
+
+            swap = {
+              size = "64G";
+              content = {
+                type = "swap";
+                randomEncryption = true;
+                discardPolicy = "both";
+              };
+            };
+          };
+        };
+      };
+    };
+
+    nodev = {
+      "/" = {
+        fsType = "tmpfs";
+        mountOptions = [
+          "mode=755"
+          "size=100%"
+        ];
+      };
+    };
+  };
+}

hosts/merlin.rig.ts.hillion.co.uk/hardware-configuration.nix

@@ -0,0 +1,28 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "thunderbolt" "nvme" "usbhid" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp0s20f0u6u2.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp171s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp172s0.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlp173s0f0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

hosts/merlin.rig.ts.hillion.co.uk/system

@@ -0,0 +1 @@
+x86_64-linux

hosts/router.home.ts.hillion.co.uk/default.nix

@@ -229,6 +229,7 @@
                   { hostname = "sodium"; hw-address = "d8:3a:dd:c3:d6:2b"; }
                   { hostname = "gendry"; hw-address = "18:c0:4d:35:60:1e"; }
                   { hostname = "phoenix"; hw-address = "a8:b8:e0:04:17:a5"; }
+                  { hostname = "merlin"; hw-address = "b0:41:6f:13:20:14"; }
                 ]);
               }
               {