feat(networking): enable systemd-networkd

home/modules/seven/default.nix

@@ -0,0 +1,22 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.custom.seven;
+in
+{
+  imports = [ ./seven-ntfy.nix ];
+
+  options = {
+    custom.seven = {
+      enable = lib.mkEnableOption (lib.mdDoc "Seven");
+      ssh.enable = lib.mkEnableOption (lib.mdDoc "Seven SSH");
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    programs.ssh.extraConfig = lib.mkIf cfg.ssh.enable ''
+      Host *.factory.secunet.com
+      User fschroeter
+    '';
+  };
+}

home/modules/seven/ntfy.nix

@@ -0,0 +1,40 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+
+let
+  cfg = config.custom.seven.ntfy;
+in
+{
+  options = {
+    custom.seven.ntfy = {
+      enable = lib.mkEnableOption (lib.mdDoc "ntfy service for seven");
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    systemd.user = {
+      services.ntfy = {
+        Unit = {
+          Description = "ntfy alert scubscription";
+          After = "network-online.target";
+          PartOf = [ "graphical-session.target" ];
+        };
+        Service =
+          let
+            topic = "https://grafana.factory.secunet.com/ntfy/alerts";
+            notify-send = lib.getExe pkgs.libnotify;
+          in
+          {
+            Environment = "PATH=${pkgs.bash}/bin:\${PATH}";
+            ExecStart = "${pkgs.ntfy-sh}/bin/ntfy sub ${topic} '${notify-send} \"$t\" \"$m\"'";
+            Restart = "always";
+          };
+        Install.WantedBy = [ "default.target" ];
+      };
+    };
+  };
+}

modules/wg0.nix

@@ -0,0 +1,67 @@
+{ config, lib, ... }:
+
+let
+  cfg = config.custom.wg0;
+in
+{
+  options = {
+    custom.wg0 = {
+      enable = lib.mkEnableOption (lib.mdDoc "Wireguard config");
+
+      addresses = lib.mkOption {
+        type = lib.types.listOf lib.types.str;
+        description = "IP addresses for this machine within VPN.";
+      };
+
+      privateKeyFile = lib.mkOption {
+        type = lib.types.str;
+        example = "/path/to/secret.key";
+        description = "Private key file.";
+      };
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    age.secrets.wireguard-home-pc-key = {
+      file = ../secrets/wireguard/home-pc.key.age;
+      owner = "systemd-network";
+    };
+    age.secrets.wireguard-cmdframe-key = {
+      file = ../secrets/wireguard/cmdframe.key.age;
+      owner = "systemd-network";
+    };
+
+    systemd.network = {
+      enable = true;
+      # TODO cannot push this to public git like this
+      netdevs."40-wg0" = {
+        netdevConfig = {
+          Kind = "wireguard";
+          Name = "wg0";
+          MTUBytes = "1280";
+        };
+        wireguardConfig = {
+          PrivateKeyFile = cfg.privateKeyFile;
+        };
+        wireguardPeers = [
+          {
+            PublicKey = "ZVayNyJeOn848aus5bqYU2ujNxvnYtV3ACoerLtDpg8=";
+            AllowedIPs = [
+              "198.18.0.0/15"
+              "fd00:5ec::/48"
+            ];
+            # TODO remove endpoint from config
+            Endpoint = "gateway.seven.secunet.com:51821";
+          }
+        ];
+      };
+      networks."40-wg0" = {
+        matchConfig.Name = "wg0";
+        address = cfg.addresses;
+        networkConfig = {
+          IPMasquerade = "ipv4";
+        };
+      };
+    };
+  };
+}

secrets/wireguard/cmdframe.key.age

@@ -0,0 +1,7 @@
+age-encryption.org/v1
+-> ssh-ed25519 OAZQhA yHDlGU8tW/fiMocPl0nldeEEn7NvPDMNCqL9hO7B5VY
+71ZALgVNzj0FJG4wW5qK+0rhF2hMMkkvqOl6wvpI1xo
+-> ssh-ed25519 lJaKnA 32vsGauSIeEy8gMq3rOuJV5OOVR/qbNCaJ96gvaYc38
+3f8ZLzGFg4g2XNfUPS+ePMc9AZHMLUjh6y0q2gaRwio
+--- PZeKDBBgibYk1Xl5Sd1S38kx322Gi6KnI0lj2NyhFUU
+?ºy)<29>Sk*ŒÀ˜ýgzË_íEË>|
JÔ×­*9á	ähÁŒ“™aIë9pÌ?Õ(ïJÑØäF x:;’1yKPü]VQ2‡J;Y¤º

system/networking.nix

@@ -5,7 +5,17 @@
     "127.0.0.1"
     "::1"
   ];
-  networking.networkmanager.dns = "systemd-resolved";
+
+  networking.nftables.enable = true;
+  networking.networkmanager = {
+    enable = true;
+    dns = "systemd-resolved";
+  };
+
+  systemd.network = {
+    enable = true;
+    wait-online.ignoredInterfaces = [ "tailscale0" ];
+  };
 
   services.dnsmasq.enable = false;
   services.resolved = {