WIP: grevling/tuba: init

flake.nix

@@ -139,6 +139,20 @@
           inputs.greg-ng.overlays.default
         ];
       };
+
+      grevling = stableNixosConfig "grevling" {
+        modules = [
+          ./hosts/grevling/configuration.nix
+          sops-nix.nixosModules.sops
+        ];
+      };
+
+      tuba = stableNixosConfig "grevling" {
+        modules = [
+          ./hosts/tuba/configuration.nix
+          sops-nix.nixosModules.sops
+        ];
+      };
     };
 
     nixosModules = {

hosts/grevling/configuration.nix

@@ -0,0 +1,36 @@
+{ config, pkgs, values, ... }:
+{
+  imports = [
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+      ../../base.nix
+      ../../misc/metrics-exporters.nix
+
+      ./services/openvpn
+    ];
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  networking.hostName = "grevling";
+
+  # systemd.network.networks."30-eno1" = values.defaultNetworkConfig // {
+  #   matchConfig.Name = "eno1";
+  #   address = with values.hosts.georg; [ (ipv4 + "/25") (ipv6 + "/64") ];
+  # };
+
+  # List packages installed in system profile
+  environment.systemPackages = with pkgs; [
+  ];
+
+  # List services that you want to enable:
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "23.05"; # Did you read the comment?
+
+}

hosts/grevling/hardware-configuration.nix

@@ -0,0 +1,40 @@
+# 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" "ehci_pci" "ahci" "usb_storage" "usbhid" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/33825f0d-5a63-40fc-83db-bfa1ebb72ba0";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/145E-7362";
+      fsType = "vfat";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/7ed27e21-3247-44cd-8bcc-5d4a2efebf57"; }
+    ];
+
+  # 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.eno1.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp2s2.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

hosts/grevling/services/openvpn/default.nix

@@ -0,0 +1,77 @@
+{ pkgs, lib, values, ... }:
+{
+  services.openvpn.servers."ov-tunnel" = {
+    config = let
+      conf = {
+        # TODO: use aliases
+        local = "129.241.210.191";
+        port = 1194;
+        proto = "udp";
+        dev = "tap";
+
+        # TODO: set up
+        ca = "";
+        cert = "";
+        key = "";
+        dh = "";
+
+        # Maintain a record of client <-> virtual IP address
+        # associations in this file.  If OpenVPN goes down or
+        # is restarted, reconnecting clients can be assigned
+        # the same virtual IP address from the pool that was
+        # previously assigned.
+        ifconfig-pool-persist = ./ipp.txt;
+
+        server-bridge = builtins.concatStringsSep " " [
+          "129.241.210.129"
+          "255.255.255.128"
+          "129.241.210.253"
+          "129.241.210.254"
+        ];
+
+        keepalive = "10 120";
+        cipher = "none";
+
+        user = "nobody";
+        group = "nobody";
+
+        status = "/var/log/openvpn-status.log";
+
+        client-config-dir = pkgs.writeTextDir "tuba" ''
+          # Sett IP-adr. for tap0 til tubas PVV-adr.
+          ifconfig-push ${values.services.tuba-tap} 255.255.255.128
+          # Hvordan skal man faa dette til aa funke, tro?
+          #ifconfig-ipv6-push 2001:700:300:1900::xxx/64
+          
+          # La tuba bruke std. PVV-gateway til all trafikk (unntatt
+          # VPN-tunnellen).
+          push "redirect-gateway"
+        '';
+
+        persist-key = true;
+        persist-tun = true;
+
+        verb = 5;
+
+        explicit-exit-notify = 1;
+      };
+    in lib.pipe conf [
+      (lib.filterAttrs (_: value: !(builtins.isNull value || value == false)))
+      (builtins.mapAttrs (_: value:
+        if builtins.isList value then builtins.concatStringsSep " " (map toString value)
+        else if value == true then value
+        else if builtins.any (f: f value) [
+          builtins.isString
+          builtins.isInt
+          builtins.isFloat
+          lib.isPath
+          lib.isDerivation
+        ] then toString value
+        else throw "Unknown value in grevling openvpn config, deading now\n${value}"
+      ))
+      (lib.mapAttrsToList (name: value: if value == true then name else "${name} ${value}"))
+      (builtins.concatStringsSep "\n")
+      (x: x + "\n\n")
+    ];
+  };
+}

hosts/tuba/configuration.nix

@@ -0,0 +1,36 @@
+{ config, pkgs, values, ... }:
+{
+  imports = [
+      # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+      ../../base.nix
+      ../../misc/metrics-exporters.nix
+
+      ./services/openvpn
+    ];
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  networking.hostName = "tuba";
+
+  # systemd.network.networks."30-eno1" = values.defaultNetworkConfig // {
+  #   matchConfig.Name = "eno1";
+  #   address = with values.hosts.georg; [ (ipv4 + "/25") (ipv6 + "/64") ];
+  # };
+
+  # List packages installed in system profile
+  environment.systemPackages = with pkgs; [
+  ];
+
+  # List services that you want to enable:
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "23.05"; # Did you read the comment?
+
+}

hosts/tuba/hardware-configuration.nix

@@ -0,0 +1,40 @@
+# 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" "ehci_pci" "ahci" "usb_storage" "usbhid" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/33825f0d-5a63-40fc-83db-bfa1ebb72ba0";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/145E-7362";
+      fsType = "vfat";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/7ed27e21-3247-44cd-8bcc-5d4a2efebf57"; }
+    ];
+
+  # 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.eno1.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp2s2.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

hosts/tuba/services/openvpn/default.nix

@@ -0,0 +1,54 @@
+{ lib, values, ... }:
+{
+  services.openvpn.servers."ov-tunnel" = {
+    config = let
+      conf = {
+        # TODO: use aliases
+        client = true;
+        dev = "tap";
+        proto = "udp";
+        remote = "129.241.210.191 1194";
+
+        resolv-retry = "infinite";
+        nobind = true;
+
+        # # TODO: set up
+        ca = "";
+        cert = "";
+        key = "";
+        remote-cert-tls = "server";
+        cipher = "none";
+
+        user = "nobody";
+        group = "nobody";
+
+        status = "/var/log/openvpn-status.log";
+
+        persist-key = true;
+        persist-tun = true;
+
+        verb = 5;
+
+        # script-security = 2;
+        # up = "systemctl restart rwhod";
+      };
+    in lib.pipe conf [
+      (lib.filterAttrs (_: value: !(builtins.isNull value || value == false)))
+      (builtins.mapAttrs (_: value:
+        if builtins.isList value then builtins.concatStringsSep " " (map toString value)
+        else if value == true then value
+        else if builtins.any (f: f value) [
+          builtins.isString
+          builtins.isInt
+          builtins.isFloat
+          lib.isPath
+          lib.isDerivation
+        ] then toString value
+        else throw "Unknown value in tuba openvpn config, deading now\n${value}"
+      ))
+      (lib.mapAttrsToList (name: value: if value == true then name else "${name} ${value}"))
+      (builtins.concatStringsSep "\n")
+      (x: x + "\n\n")
+    ];
+  };
+}

values.nix

@@ -21,6 +21,12 @@ in rec {
       ipv4 = pvv-ipv4 213;
       ipv6 = pvv-ipv6 213;
     };
+    grevling-tap = {
+      ipv4 = pvv-ipv4 251;
+    };
+    tuba-tap = {
+      ipv4 = pvv-ipv4 252;
+    };
   };
 
   hosts = {
@@ -64,6 +70,14 @@ in rec {
       ipv4 = pvv-ipv4 234;
       ipv6 = pvv-ipv6 234;
     };
+    grevling = {
+      ipv4 = pvv-ipv4 198;
+      ipv6 = pvv-ipv6 198;
+    };
+    tuba = {
+      ipv4 = pvv-ipv4 199;
+      ipv6 = pvv-ipv6 199;
+    };
   };
 
   defaultNetworkConfig = {