From 3f517bbe7fa5a9b802addbc1ae323a867b9f43a4 Mon Sep 17 00:00:00 2001
From: Katharina Heidenreich <katharina.heidenreich@stud.tu-darmstadt.de>
Date: Sat, 11 Apr 2026 13:09:38 +0200
Subject: [PATCH] feat: add node exporter

---
 config/services.nix        |  8 ++++++++
 services/default.nix       |  1 +
 services/node-exporter.nix | 12 ++++++++++++
 3 files changed, 21 insertions(+)
 create mode 100644 services/node-exporter.nix

diff --git a/config/services.nix b/config/services.nix
index 2d42a3b..d62ce92 100644
--- a/config/services.nix
+++ b/config/services.nix
@@ -3,4 +3,12 @@ rec {
     port = 3000;
     domain = "git.nudelerde.de";
   };
+
+  "metric-exporter" = {
+    port = 9100;
+    collectors = [
+      "systemd"
+      "processes"
+    ];
+  };
 }
diff --git a/services/default.nix b/services/default.nix
index 8fc6c4b..1e9cfb5 100644
--- a/services/default.nix
+++ b/services/default.nix
@@ -3,5 +3,6 @@
   imports = [
     ./openssh.nix
     ./forgejo.nix
+    ./node-exporter.nix
   ];
 }
diff --git a/services/node-exporter.nix b/services/node-exporter.nix
new file mode 100644
index 0000000..c313e8e
--- /dev/null
+++ b/services/node-exporter.nix
@@ -0,0 +1,12 @@
+{ config, pkgs, lib, ... }:
+let
+  serv = import ../config/services.nix;
+in {
+  services.prometheus.exporters.node = {
+    enable = true;
+    port = serv."metric-exporter".port;
+    enabledCollectors = serv."metric-exporter".collectors;
+  };
+
+  networking.firewall.allowedTCPPorts = [ serv."metric-exporter".port ];
+}