Enable auto-update on srv01-hf

Also disable networking.* options

flake.lock

@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1748372346,
+        "lastModified": 1752998173,
-        "narHash": "sha256-7y7NZ6uW0GbT0h4gqfD2xvRuJj5IlPGw32oIc9Twga8=",
+        "narHash": "sha256-ZlYpBp2WOe03UrpjJGz5KTOL/pp7A452hJO/Vc8C4/0=",
         "owner": "AdnanHodzic",
         "repo": "auto-cpufreq",
-        "rev": "becd5b89963fa54fef3566147f3fd2087f8a5842",
+        "rev": "562278377ffa96f3c1af49c7b499df028ce8d8bd",
         "type": "github"
       },
       "original": {
@@ -20,6 +20,26 @@
         "type": "github"
       }
     },
+    "disko": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1753140376,
+        "narHash": "sha256-7lrVrE0jSvZHrxEzvnfHFE/Wkk9DDqb+mYCodI5uuB8=",
+        "owner": "nix-community",
+        "repo": "disko",
+        "rev": "545aba02960caa78a31bd9a8709a0ad4b6320a5c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "disko",
+        "type": "github"
+      }
+    },
     "flake-compat": {
       "flake": false,
       "locked": {
@@ -36,6 +56,21 @@
         "type": "github"
       }
     },
+    "flake-compat_2": {
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "gitignore": {
       "inputs": {
         "nixpkgs": [
@@ -65,11 +100,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1749154018,
+        "lastModified": 1753592768,
-        "narHash": "sha256-gjN3j7joRvT3a8Zgcylnd4NFsnXeDBumqiu4HmY1RIg=",
+        "narHash": "sha256-oV695RvbAE4+R9pcsT9shmp6zE/+IZe6evHWX63f2Qg=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "7aae0ee71a17b19708b93b3ed448a1a0952bf111",
+        "rev": "fc3add429f21450359369af74c2375cb34a2d204",
         "type": "github"
       },
       "original": {
@@ -87,11 +122,11 @@
         "pre-commit-hooks": "pre-commit-hooks"
       },
       "locked": {
-        "lastModified": 1746906641,
+        "lastModified": 1752585957,
-        "narHash": "sha256-b6few4tkqN2TWdrZTwWOjsWxA11rle7y9pcc0/ynuoE=",
+        "narHash": "sha256-ogQo/MMNSIM4U4VQMieIrpLhjkgSbev3VR24foJ/h/U=",
         "owner": "~rycee",
         "repo": "lazy-apps",
-        "rev": "0b30a0bf524a661f9657c441d021aaa5724f12ff",
+        "rev": "3c3ce5001e24b6c12496a5920eee28a96f8d49d6",
         "type": "sourcehut"
       },
       "original": {
@@ -102,11 +137,11 @@
     },
     "nixos-hardware": {
       "locked": {
-        "lastModified": 1749195551,
+        "lastModified": 1754564048,
-        "narHash": "sha256-W5GKQHgunda/OP9sbKENBZhMBDNu2QahoIPwnsF6CeM=",
+        "narHash": "sha256-dz303vGuzWjzOPOaYkS9xSW+B93PSAJxvBd6CambXVA=",
         "owner": "NixOS",
         "repo": "nixos-hardware",
-        "rev": "4602f7e1d3f197b3cb540d5accf5669121629628",
+        "rev": "26ed7a0d4b8741fe1ef1ee6fa64453ca056ce113",
         "type": "github"
       },
       "original": {
@@ -118,11 +153,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1749086602,
+        "lastModified": 1754767907,
-        "narHash": "sha256-DJcgJMekoxVesl9kKjfLPix2Nbr42i7cpEHJiTnBUwU=",
+        "narHash": "sha256-8OnUzRQZkqtUol9vuUuQC30hzpMreKptNyET2T9lB6g=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "4792576cb003c994bd7cc1edada3129def20b27d",
+        "rev": "c5f08b62ed75415439d48152c2a784e36909b1bc",
         "type": "github"
       },
       "original": {
@@ -148,6 +183,36 @@
         "type": "github"
       }
     },
+    "nixpkgs-stable_2": {
+      "locked": {
+        "lastModified": 1748437600,
+        "narHash": "sha256-hYKMs3ilp09anGO7xzfGs3JqEgUqFMnZ8GMAqI6/k04=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "7282cb574e0607e65224d33be8241eae7cfe0979",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-25.05",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs-unstable": {
+      "locked": {
+        "lastModified": 1723637854,
+        "narHash": "sha256-med8+5DSWa2UnOqtdICndjDAEjxr5D7zaIiK4pn0Q7c=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "c3aa7b8938b17aebd2deecf7be0636000d62a2b9",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-unstable",
+        "type": "indirect"
+      }
+    },
     "pre-commit-hooks": {
       "inputs": {
         "flake-compat": "flake-compat",
@@ -172,17 +237,55 @@
         "type": "github"
       }
     },
+    "proxmox-nixos": {
+      "inputs": {
+        "flake-compat": "flake-compat_2",
+        "nixpkgs-stable": "nixpkgs-stable_2",
+        "nixpkgs-unstable": "nixpkgs-unstable",
+        "utils": "utils"
+      },
+      "locked": {
+        "lastModified": 1754428470,
+        "narHash": "sha256-Sxf8gf+vfGeFaJMW3D+8pwH/+WwYTQOg47Lrm42+kTc=",
+        "owner": "SaumonNet",
+        "repo": "proxmox-nixos",
+        "rev": "6faed2845ef5f0bb05c9519b75097bbe7fb39327",
+        "type": "github"
+      },
+      "original": {
+        "owner": "SaumonNet",
+        "repo": "proxmox-nixos",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "auto-cpufreq": "auto-cpufreq",
+        "disko": "disko",
         "home-manager": "home-manager",
         "lazy-apps": "lazy-apps",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs",
-        "systems": "systems"
+        "proxmox-nixos": "proxmox-nixos",
+        "systems": "systems_2"
       }
     },
     "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
       "locked": {
         "lastModified": 1689347949,
         "narHash": "sha256-12tWmuL2zgBgZkdoB6qXZsgJEH9LR3oUgpaQq2RbI80=",
@@ -196,6 +299,24 @@
         "repo": "default-linux",
         "type": "github"
       }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -17,6 +17,11 @@
       url = "sourcehut:~rycee/lazy-apps";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+    proxmox-nixos.url = "github:SaumonNet/proxmox-nixos";
+    disko = {
+      url = "github:nix-community/disko";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
 
     systems.url = "github:nix-systems/default-linux";
   };
@@ -28,6 +33,8 @@
     nixos-hardware,
     home-manager,
     auto-cpufreq,
+    proxmox-nixos,
+    disko,
     systems,
     ...
   } @ inputs: let
@@ -90,6 +97,78 @@
           ./hosts/backup-raspberrypi
         ];
       };
+
+      server = nixpkgs.lib.nixosSystem rec {
+        system = "x86_64-linux";
+
+        specialArgs = {
+          inherit inputs outputs;
+        };
+
+        modules = [
+          ./hosts/nixos-server-test
+          proxmox-nixos.nixosModules.proxmox-ve
+
+          ({...}: {
+            nixpkgs.overlays = [
+              proxmox-nixos.overlays.${system}
+            ];
+          })
+        ];
+      };
+
+      srv01-hf = nixpkgs.lib.nixosSystem rec {
+        system = "x86_64-linux";
+
+        specialArgs = {
+          inherit inputs outputs;
+        };
+
+        modules = [
+          disko.nixosModules.disko
+          ./hosts/srv01.hf
+        ];
+      };
+
+      kube01 = nixpkgs.lib.nixosSystem rec {
+        system = "x86_64-linux";
+
+        specialArgs = {
+          inherit inputs outputs;
+        };
+
+        modules = [
+          disko.nixosModules.disko
+          ./hosts/kube01
+        ];
+      };
+
+      kube02 = nixpkgs.lib.nixosSystem rec {
+        system = "x86_64-linux";
+
+        specialArgs = {
+          inherit inputs outputs;
+        };
+
+        modules = [
+          disko.nixosModules.disko
+          ./hosts/kube02
+        ];
+      };
+
+      kube03 = nixpkgs.lib.nixosSystem rec {
+        system = "x86_64-linux";
+
+        specialArgs = {
+          inherit inputs outputs;
+        };
+
+        modules = [
+          disko.nixosModules.disko
+          ./hosts/kube03
+        ];
+      };
+
     };
   };
 }

hosts/kube01/default.nix

@@ -0,0 +1,41 @@
+{ inputs, outputs, config, lib, pkgs, ... }:
+
+{
+  imports =
+    [
+      ../../modules/disko/efi-full-btrfs.nix
+      ../../modules/systemd-boot.nix
+
+      ../../users/julius/nixos-server.nix
+      ../../modules/nix.nix
+      ../../modules/network-server.nix
+      ../../modules/locale.nix
+      ../../modules/server-cli.nix
+      ../../modules/sshd.nix
+      ../../modules/k3s.nix
+      ../../modules/qemu-guest.nix
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+    ];
+
+
+  networking.hostName = "kube01"; # Define your hostname.
+
+  services.k3s = {
+    clusterInit = true;
+  };
+
+  # This option defines the first version of NixOS you have installed on this particular machine,
+  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
+  # 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.
+  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
+  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
+  # to actually do that.
+  # This value being lower than the current NixOS release does NOT mean your system is
+  # out of date, out of support, or vulnerable.
+  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
+  # and migrated your data accordingly.
+  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
+  system.stateVersion = "25.05"; # Did you read the comment?
+}

hosts/kube01/hardware-configuration.nix

@@ -0,0 +1,24 @@
+# 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 = [ "ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk" ];
+  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.enp1s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

hosts/kube02/default.nix

@@ -0,0 +1,41 @@
+{ inputs, outputs, config, lib, pkgs, ... }:
+
+{
+  imports =
+    [
+      ../../modules/disko/efi-full-btrfs.nix
+      ../../modules/systemd-boot.nix
+
+      ../../users/julius/nixos-server.nix
+      ../../modules/nix.nix
+      ../../modules/network-server.nix
+      ../../modules/locale.nix
+      ../../modules/server-cli.nix
+      ../../modules/sshd.nix
+      ../../modules/k3s.nix
+      ../../modules/qemu-guest.nix
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+    ];
+
+  networking.hostName = "kube02"; # Define your hostname.
+
+  services.k3s = {
+    serverAddr = "https://kube01:6443";
+    clusterInit = false;
+  };
+
+  # This option defines the first version of NixOS you have installed on this particular machine,
+  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
+  # 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.
+  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
+  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
+  # to actually do that.
+  # This value being lower than the current NixOS release does NOT mean your system is
+  # out of date, out of support, or vulnerable.
+  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
+  # and migrated your data accordingly.
+  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
+  system.stateVersion = "25.05"; # Did you read the comment?
+}

hosts/kube02/hardware-configuration.nix

@@ -0,0 +1,24 @@
+# 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 = [ "ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk" ];
+  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.enp1s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

hosts/kube03/default.nix

@@ -0,0 +1,42 @@
+{ inputs, outputs, config, lib, pkgs, ... }:
+
+{
+  imports =
+    [
+      ../../modules/disko/efi-full-btrfs.nix
+      ../../modules/systemd-boot.nix
+
+      ../../users/julius/nixos-server.nix
+      ../../modules/nix.nix
+      ../../modules/network-server.nix
+      ../../modules/locale.nix
+      ../../modules/server-cli.nix
+      ../../modules/sshd.nix
+      ../../modules/k3s.nix
+      ../../modules/qemu-guest.nix
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+    ];
+
+
+  networking.hostName = "kube03"; # Define your hostname.
+
+  services.k3s = {
+    serverAddr = "https://kube01:6443";
+    clusterInit = false;
+  };
+
+  # This option defines the first version of NixOS you have installed on this particular machine,
+  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
+  # 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.
+  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
+  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
+  # to actually do that.
+  # This value being lower than the current NixOS release does NOT mean your system is
+  # out of date, out of support, or vulnerable.
+  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
+  # and migrated your data accordingly.
+  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
+  system.stateVersion = "25.05"; # Did you read the comment?
+}

hosts/kube03/hardware-configuration.nix

@@ -0,0 +1,24 @@
+# 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 = [ "ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk" ];
+  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.enp1s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

hosts/nixos-server-test/default.nix

@@ -0,0 +1,96 @@
+{ inputs, outputs, config, lib, pkgs, ... }:
+
+{
+  imports =
+    [
+      ../../modules/nix.nix
+      ../../modules/locale.nix
+      ../../modules/server-cli.nix
+      ../../modules/sshd.nix
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+    ];
+  # Use the GRUB 2 boot loader.
+  boot = {
+    loader.grub = {
+      enable = true;
+      device = "/dev/vda";
+    };
+    tmp.useTmpfs = true;
+  };
+  networking.hostName = "nixos-server"; # Define your hostname.
+  users = {
+    users = {
+      julius = {
+        isNormalUser = true;
+        uid = 1000;
+        extraGroups = [ "wheel" "julius" ];
+      };
+    };
+    groups = {
+      julius = {
+        gid = 1000;
+      };
+    };
+  };
+
+  nix.settings = {
+    substituters = [
+      "https://cache.saumon.network/proxmox-nixos"
+    ];
+    trusted-public-keys = [
+      "proxmox-nixos:D9RYSWpQQC/msZUWphOY2I5RLH5Dd6yQcaHIuug7dWM="
+    ];
+  };
+
+  services.proxmox-ve = {
+    enable = true;
+    ipAddress = "192.168.122.71";
+
+    # Make vmbr0 bridge visible in Proxmox web interface
+    bridges = [ "vmbr0" ];
+  };
+
+  networking.useDHCP = false;
+
+  systemd.network = {
+    enable = true;
+
+    networks."10-lan" = {
+      matchConfig.Name = [ "enp1s0" ];
+      networkConfig = {
+        Bridge = "vmbr0";
+      };
+    };
+
+    netdevs."vmbr0" = {
+      netdevConfig = {
+        Name = "vmbr0";
+        Kind = "bridge";
+      };
+    };
+
+    networks."10-lan-bridge" = {
+      matchConfig.Name = "vmbr0";
+      networkConfig = {
+        IPv6AcceptRA = true;
+        DHCP = "ipv4";
+      };
+      linkConfig.RequiredForOnline = "routable";
+    };
+  };
+
+  # This option defines the first version of NixOS you have installed on this particular machine,
+  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
+  # 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.
+  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
+  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
+  # to actually do that.
+  # This value being lower than the current NixOS release does NOT mean your system is
+  # out of date, out of support, or vulnerable.
+  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
+  # and migrated your data accordingly.
+  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
+  system.stateVersion = "25.05"; # Did you read the comment?
+}

hosts/nixos-server-test/hardware-configuration.nix

@@ -0,0 +1,31 @@
+# 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 = [ "ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/e46c412a-8b6d-41b8-b53c-65d7a8fc39ed";
+      fsType = "ext4";
+    };
+
+  swapDevices = [ ];
+
+  # 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.enp1s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

hosts/srv01.hf/default.nix

@@ -0,0 +1,56 @@
+{ inputs, outputs, config, lib, pkgs, ... }:
+
+{
+  imports =
+    [
+      ../../modules/disko/efi-full-btrfs.nix
+
+      ../../users/julius/nixos-server.nix
+      ../../modules/nix.nix
+      ../../modules/network-server.nix
+      ../../modules/locale.nix
+      ../../modules/server-cli.nix
+      ../../modules/sshd.nix
+      ../../modules/qemu-guest.nix
+      ../../modules/docker.nix
+      ../../modules/auto-upgrade.nix
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+    ];
+
+  systemd.network = {
+    enable = true;
+      networks."10-wan" = {
+      matchConfig.Name = "ens18";
+      networkConfig.DHCP = "no";
+      address = [
+        "77.90.17.93/24"
+        "2a06:de00:100:63::2/64"
+      ];
+      routes = [
+        { Gateway = "77.90.17.1"; }
+        { Gateway = "2a06:de00:100::1"; GatewayOnLink = true; }
+      ];
+      dns = [ "9.9.9.9" ];
+    };
+  };
+
+  # Disable classic networking configuration
+  networking.useDHCP = lib.mkForce false;
+
+  networking.hostName = "srv01-hf"; # Define your hostname.
+
+  # This option defines the first version of NixOS you have installed on this particular machine,
+  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
+  # 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.
+  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
+  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
+  # to actually do that.
+  # This value being lower than the current NixOS release does NOT mean your system is
+  # out of date, out of support, or vulnerable.
+  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
+  # and migrated your data accordingly.
+  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
+  system.stateVersion = "25.05"; # Did you read the comment?
+}

hosts/srv01.hf/hardware-configuration.nix

@@ -0,0 +1,24 @@
+# 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 = [ "uhci_hcd" "ehci_pci" "ahci" "sr_mod" ];
+  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.enp1s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

modules/auto-upgrade.nix

@@ -0,0 +1,15 @@
+{
+  inputs,
+  ...
+}: {
+  system.autoUpgrade = {
+    enable = true;
+    flags = [
+      "--recreate-lock-file" # Deprecated, but will hopefully be reintroduced
+      "-L"
+    ];
+    flake = inputs.self.outPath;
+    dates = "02:00";
+    randomizedDelaySec = "45min";
+  };
+}

modules/disko/efi-full-btrfs.nix

@@ -0,0 +1,61 @@
+{
+  disko.devices = {
+    disk = {
+      sda = {
+        type = "disk";
+        device = "/dev/sda";
+        content = {
+          type = "gpt";
+          partitions = {
+            MBR = {
+              type = "EF02"; # for grub MBR
+              size = "1M";
+              priority = 1; # Needs to be first partition
+            };
+            ESP = {
+              priority = 1;
+              name = "ESP";
+              size = "500M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+            root = {
+              size = "100%";
+              content = {
+                type = "btrfs";
+                extraArgs = [ "-f" ]; # Override existing partition
+                # Subvolumes must set a mountpoint in order to be mounted,
+                # unless their parent is mounted
+                subvolumes = {
+                  # Subvolume name is different from mountpoint
+                  "/rootfs" = {
+                    mountpoint = "/";
+                  };
+                  # Subvolume name is the same as the mountpoint
+                  "/home" = {
+                    mountOptions = [ "compress=zstd" ];
+                    mountpoint = "/home";
+                  };
+                  # Sub(sub)volume doesn't need a mountpoint as its parent is mounted
+                  "/home/julius" = { };
+                  # Parent is not mounted so the mountpoint must be set
+                  "/nix" = {
+                    mountOptions = [ "compress=zstd" "noatime" ];
+                    mountpoint = "/nix";
+                  };
+                };
+
+                mountpoint = "/partition-root";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

modules/k3s.nix

@@ -0,0 +1,28 @@
+{
+  pkgs,
+  lib,
+  ...
+}: {
+
+  services.k3s = {
+    enable = true;
+    role = "server";
+    token = "verysecrettoken";
+    extraFlags = toString ([
+      "--write-kubeconfig-mode \"0644\""
+      "--disable servicelb"
+      "--disable traefik"
+      "--disable local-storage"
+    ]);
+  };
+
+  networking.firewall.allowedTCPPorts = [
+    6443
+    2379
+    2380
+  ];
+  networking.firewall.allowedUDPPorts = [
+    8472
+  ];
+
+}

modules/qemu-guest.nix

@@ -0,0 +1,7 @@
+{
+  ...
+}: {
+
+  services.qemuGuest.enable = true;
+
+}

modules/sshd.nix

@@ -0,0 +1,13 @@
+{
+  pkgs,
+  lib,
+  ...
+}: {
+  services.openssh = {
+    enable = true;
+    settings = {
+      PasswordAuthentication = false;
+      PermitRootLogin = "no";
+    };
+  };
+}

modules/systemd-boot.nix

@@ -0,0 +1,15 @@
+{
+  ...
+}: {
+
+  boot = {
+    loader = {
+      systemd-boot = {
+        enable = true;
+      };
+      efi.canTouchEfiVariables = true;
+    };
+    tmp.useTmpfs = true;
+  };
+
+}

users/julius/nixos-server.nix

@@ -0,0 +1,23 @@
+{
+  ...
+}: {
+
+  users = {
+    users = {
+      julius = {
+        initialPassword = "password";
+        isNormalUser = true;
+        uid = 1000;
+        group = "julius";
+        extraGroups = [ "wheel" ];
+      };
+    };
+    groups = {
+      julius = {
+        gid = 1000;
+      };
+    };
+  };
+
+  nix.settings.trusted-users = [ "julius" ];
+}