hosts: add server_big prototype

hosts/server_big/default.nix

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+#
+#  Specific system configuration settings for desktop
+#
+#  flake.nix
+#   ├─ ./hosts
+#   │   └─ ./laptop
+#   │        ├─ default.nix *
+#   │        └─ hardware-configuration.nix       
+#   └─ ./modules
+#       ├─ ./desktop
+#       │   └─ ./hyprland
+#       │       └─ hyprland.nix
+#       ├─ ./modules
+#       │   └─ ./programs
+#       │       └─ waybar.nix
+#       └─ ./hardware
+#           └─ default.nix
+#
+
+{ config, pkgs, user, agenix, impermanence, ... }:
+
+{
+  imports =                                                         # For now, if applying to other system, swap files
+    [(import ./hardware-configuration.nix)] ++                      # Current system hardware config @ /etc/nixos/hardware-configuration.nix
+    #[(import ../../modules/desktop/virtualisation/docker.nix)] ++   # Docker
+    (import ../../modules/services/server) ++                       # Server Services
+    (import ../../modules/hardware);                                # Hardware devices
+
+  boot = {                                  # Boot options
+    kernelPackages = pkgs.linuxPackages_latest;
+
+    loader = {                              # EFI Boot
+    grub = {
+        enable = true;
+        device = "/dev/sda";
+    };
+      timeout = 1;                          # Grub auto select time
+    };
+  };
+
+  environment = {
+    etc = {
+      "fail2ban/filter.d/gitea.conf" = {
+        source = ../../modules/services/server/fail2ban/filter/gitea.conf;
+        mode = "0444";
+      };
+      "fail2ban/filter.d/nextcloud.conf" = {
+        source = ../../modules/services/server/fail2ban/filter/nextcloud.conf;
+        mode = "0444";
+      };
+    };
+  };
+
+  programs = {                              # No xbacklight, this is the alterantive
+    zsh.enable = true;
+    ssh.startAgent = false;
+    gnupg.agent = {
+      enable = true;
+      enableSSHSupport = true;
+      pinentryFlavor = "curses";
+    };
+  };
+
+  services = {
+    #auto-cpufreq.enable = true;
+    qemuGuest.enable = true;
+    avahi = {                               # Needed to find wireless printer
+      enable = true;
+      nssmdns = true;
+      publish = {                           # Needed for detecting the scanner
+        enable = true;
+        addresses = true;
+        userServices = true;
+      };
+    };
+    fail2ban = {
+        enable = true;
+        maxretry = 5;
+        jails.DEFAULT.settings = {
+           findtime = "15m";
+        };
+        jails = {
+            gitea = ''
+              enabled = true
+              filter = gitea
+              backend = systemd
+              action = iptables-allports
+            '';
+            nextcloud = ''
+              backend = auto
+              enabled = true
+              filter = nextcloud
+              logpath = /var/lib/nextcloud/data/nextcloud.log
+              action = iptables-allports
+            '';
+          };
+    };
+
+  };
+
+}

hosts/server_big/hardware-configuration.nix

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+#
+# Hardware settings for Teclast F5 10" Laptop
+# NixOS @ sda2
+#
+# flake.nix
+#  └─ ./hosts
+#      └─ ./laptop
+#          └─ hardware-configuration.nix *
+#
+# 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 + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [  "ata_piix" "uhci_hcd" "virtio_pci" "virtio_scsi" "ahci" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ "vfio_pci" "vfio" "vfio_iommu_type1" ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+  boot.tmp.useTmpfs = false;
+  boot.tmp.cleanOnBoot = true;
+  zramSwap.enable = true;
+
+  services.btrfs.autoScrub = {
+    enable = true;
+    interval = "monthly";
+    fileSystems = [
+      "/"
+    ];
+  };
+
+  services.btrbk = {
+      instances = {
+          hf = {
+              onCalendar = "hourly";
+              settings = {
+                  incremental = "yes";
+                  snapshot_create = "ondemand";
+                  snapshot_dir = "@snapshots";
+                  timestamp_format = "long";
+
+                  snapshot_preserve = "2m 2w 5d 5h";
+                  snapshot_preserve_min = "latest";
+                
+                  volume =  {
+                      "/mnt/snapshots/root" = {
+                          snapshot_create = "always";
+                          subvolume = {
+                              "@" = {};
+                              "@home" = {};
+                          };
+                      };
+                  };
+              };
+          };
+      };
+  };
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-label/NIXROOT";
+      fsType = "btrfs";
+      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@,discard=async" ];
+    };
+
+  fileSystems."/home" =
+    { device = "/dev/disk/by-label/NIXROOT";
+      fsType = "btrfs";
+      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@home,discard=async" ];
+    };
+
+  fileSystems."/srv" =
+    { device = "/dev/disk/by-label/NIXROOT";
+      fsType = "btrfs";
+      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@srv,discard=async" ];
+    };
+
+  fileSystems."/nix" =
+    { device = "/dev/disk/by-label/NIXROOT";
+      fsType = "btrfs";
+      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@nix,discard=async" ];
+    };
+
+  fileSystems."/swap" =
+    { device = "/dev/disk/by-label/NIXROOT";
+      fsType = "btrfs";
+      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvol=@swap,discard=async" ];
+    };
+
+  fileSystems."/mnt/snapshots/root" =
+    { device = "/dev/disk/by-label/NIXROOT";
+      fsType = "btrfs";
+      options = [ "compress=zstd,space_cache=v2,ssd,noatime,subvolid=5,discard=async" ];
+    };
+
+
+  #swapDevices = [ { device = "/swap/swapfile"; } ];
+  swapDevices = [  ];
+  
+  networking = {
+    useDHCP = false;                        # Deprecated
+    hostName = "kabtop";
+    domain = "kabtop.de";
+    networkmanager = {
+      enable = false;
+    };
+    interfaces = {
+      ens18 = {
+        useDHCP = false;                     # For versatility sake, manually edit IP on nm-applet.
+        ipv4.addresses = [ {
+            address = "37.44.215.182";
+            prefixLength = 24;
+        } ];
+        ipv6.addresses = [ {
+            address = "2a13:7e80:0:ef::";
+            prefixLength = 64;
+        } ];
+      };
+    };
+    defaultGateway = "37.44.215.182";
+    defaultGateway6 = {
+      address = "fe80::1";
+      interface = "ens18";
+    };
+
+    nameservers = [ "9.9.9.9" "2620:fe::fe" ];
+    firewall = {
+      enable = true;
+      allowedUDPPorts = [  ];
+      allowedTCPPorts = [ 80 443 ];
+    };
+  };
+
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

hosts/server_big/home.nix

@@ -0,0 +1,39 @@
+#
+#  Home-manager configuration for laptop
+#
+#  flake.nix
+#   ├─ ./hosts
+#   │   └─ ./laptop
+#   │       └─ home.nix *
+#   └─ ./modules
+#       └─ ./desktop
+#           └─ ./hyprland
+#              └─ hyprland.nix
+#
+
+{ pkgs, ... }:
+
+{
+  imports =
+    [
+      ../../modules/home.nix # Window Manager
+    ];
+
+  home = {                                # Specific packages for laptop
+    packages = with pkgs; [
+      # Applications
+
+      # Display
+      #light                              # xorg.xbacklight not supported. Other option is just use xrandr.
+
+      # Power Management
+      #auto-cpufreq                       # Power management
+      #tlp                                # Power management
+    ];
+  };
+
+  programs = {
+    alacritty.settings.font.size = 11;
+  };
+
+}