From 2576748c38d5e49fd2f4077d0fb8843d3cd3c54a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Torjus=20H=C3=A5kestad?= <torjus@usit.uio.no>
Date: Mon, 3 Jun 2024 03:44:34 +0200
Subject: [PATCH] Add prometheus monitoring

---
 system/default.nix    |  1 +
 system/monitoring.nix | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 system/monitoring.nix

diff --git a/system/default.nix b/system/default.nix
index 06aee46..debf8f0 100644
--- a/system/default.nix
+++ b/system/default.nix
@@ -3,5 +3,6 @@
     ./sops.nix
     ./root-user.nix
     ./sshd.nix
+    ./monitoring.nix
   ];
 }
diff --git a/system/monitoring.nix b/system/monitoring.nix
new file mode 100644
index 0000000..312489e
--- /dev/null
+++ b/system/monitoring.nix
@@ -0,0 +1,33 @@
+{ pkgs, ... }:
+{
+  environment.systemPackages = with pkgs; [
+    prometheus-node-exporter
+    prometheus-systemd-exporter
+  ];
+
+  systemd.services."node-exporter" = {
+    enable = true;
+    unitConfig = {
+      Description = "Prometheus Node Exporter";
+      After = [ "network.target" ];
+    };
+    serviceConfig = {
+      ExecStart = "${pkgs.prometheus-node-exporter}/bin/node_exporter";
+    };
+    wantedBy = [ "multi-user.target" ];
+  };
+
+  systemd.services."systemd-exporter" = {
+    enable = true;
+    unitConfig = {
+      Description = "Prometheus Systemd Exporter";
+      After = [ "network.target" ];
+    };
+    serviceConfig = {
+      ExecStart = "${pkgs.prometheus-systemd-exporter}/bin/systemd_exporter";
+    };
+    wantedBy = [ "multi-user.target" ];
+  };
+
+  networking.firewall.allowedTCPPorts = [ 9100 9558 8989 ];
+}