1 files changed, 62 insertions, 0 deletions
diff --git a/ops/modules/tvl-headscale.nix b/ops/modules/tvl-headscale.nix
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+# Configuration for the coordination server for net.tvl.fyi, a
+# tailscale network run using headscale.
+#
+# All TVL members can join this network, which provides several exit
+# nodes through which traffic can be routed.
+#
+# The coordination server is currently run on sanduny.tvl.su. It is
+# managed manually, ping somebody with access ... for access.
+#
+# Servers should join using approximately this command:
+#   tailscale up --login-server https://net.tvl.fyi --accept-dns=false --advertise-exit-node
+#
+# Clients should join using approximately this command:
+#   tailscale up --login-server https://net.tvl.fyi --accept-dns=false
+{ config, pkgs, ... }:
+
+{
+  # TODO(tazjin): run embedded DERP server
+  services.headscale = {
+    enable = true;
+    port = 4725; # hscl
+
+    settings = {
+      server_url = "https://net.tvl.fyi";
+      dns_config.nameservers = [
+        "8.8.8.8"
+        "1.1.1.1"
+        "77.88.8.8"
+      ];
+
+      # TLS is handled by nginx
+      tls_cert_path = null;
+      tls_key_path = null;
+    };
+  };
+
+  environment.systemPackages = [ pkgs.headscale ]; # admin CLI
+
+  services.nginx.virtualHosts."net.tvl.fyi" = {
+    serverName = "net.tvl.fyi";
+    enableACME = true;
+    forceSSL = true;
+
+    # See https://github.com/juanfont/headscale/blob/v0.22.3/docs/reverse-proxy.md#nginx
+    extraConfig = ''
+      location / {
+        proxy_pass http://localhost:${toString config.services.headscale.port};
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection $connection_upgrade;
+        proxy_set_header Host $server_name;
+        proxy_redirect http:// https://;
+        proxy_buffering off;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $http_x_forwarded_proto;
+        add_header Strict-Transport-Security "max-age=15552000; includeSubDomains" always;
+      }
+    '';
+  };
+
+}