From baae97b1920d4fb616781bedd6e3d09debe678f0 Mon Sep 17 00:00:00 2001
From: Alex Auvolat <alex@adnab.me>
Date: Thu, 9 Mar 2023 15:31:05 +0100
Subject: sample deployment of wgautomesh on staging (dont deploy prod with
 this commit)

---
 nix/deuxfleurs.nix | 33 ++++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)

(limited to 'nix/deuxfleurs.nix')

diff --git a/nix/deuxfleurs.nix b/nix/deuxfleurs.nix
index 3a94860..4de99cf 100644
--- a/nix/deuxfleurs.nix
+++ b/nix/deuxfleurs.nix
@@ -28,6 +28,7 @@ in
         };
         endpoint = mkOption {
           type = nullOr str;
+          default = null;
           description = "Wireguard endpoint on the public Internet";
         };
         lan_endpoint = mkOption {
@@ -134,6 +135,10 @@ in
     };
   };
 
+  imports = [
+      ./wgautomesh.nix
+    ];
+
   config =
     let node_meta = {
         "site" = cfg.site_name;
@@ -147,6 +152,7 @@ in
         else {});
     in
   {
+
     # Configure admin accounts on all nodes
     users.users = builtins.mapAttrs (name: publicKeys: {
       isNormalUser = true;
@@ -233,18 +239,27 @@ in
     services.resolved.enable = false;
 
     # Configure Wireguard VPN between all nodes
-    systemd.services."wg-quick-wg0".after = [ "unbound.service" ];
-    networking.wg-quick.interfaces.wg0 = {
-      address = [ "${cfg.cluster_ip}/16" ];
+    networking.wireguard.interfaces.wg0 = {
+      ips = [ "${cfg.cluster_ip}/16" ];
       listenPort = cfg.wireguard_port;
       privateKeyFile = "/var/lib/deuxfleurs/wireguard-keys/private";
       mtu = 1420;
-      peers = map ({ publicKey, endpoint, IP, site_name, lan_endpoint, ... }: {
-        publicKey = publicKey;
-        allowedIPs = [ "${IP}/32" ];
-        endpoint = if site_name != null && site_name == cfg.site_name && lan_endpoint != null
-                   then lan_endpoint else endpoint;
-        persistentKeepalive = 25;
+    };
+    services.wgautomesh = {
+      enable = true;
+      interface = "wg0";
+      gossipPort = 1666;
+      upnpForwardPublicPort = 
+        let
+          us = filter ({ hostname, ...}: hostname == config.networking.hostName) cfg.cluster_nodes;
+        in
+        if length us > 0 && (head us).endpoint != null then
+          strings.toInt (lists.last (split ":" (head us).endpoint))
+        else null;
+      peers = map ({ publicKey, endpoint, IP, ... }: {
+        address = IP;
+        pubkey = publicKey;
+        endpoint = endpoint;
       }) cfg.cluster_nodes;
     };
 
-- 
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