Initial scaffolding and layout

Set up the modules of the flake. At this time, the flake is split into
modules and machines. Considering that additional top-level sections --
such as packages and shells -- will also be added, it might make sense
to keep all nix related things in one top-level directory, alongside the
flake.nix file.

This is all under the assumption that later amendments to the project
will introduce other tech, such as terraform.

1 files changed, 38 insertions, 0 deletions

diff --git a/modules/xnet/monitoring/default.nix b/modules/xnet/monitoring/default.nix
new file mode 100644
index 0000000..87ae724
--- /dev/null
+++ b/modules/xnet/monitoring/default.nix
@@ -0,0 +1,38 @@
+{ config, ... }:
+let
+  inherit (config.networking) hostName;
+  inherit (config.services.prometheus) exporters;
+in
+{
+  imports = [ ./grafana.nix ./prometheus.nix ];
+
+  exporters = {
+    node = {
+      enable = true;
+      enabledCollectors = [ "processes" "systemd" ];
+    };
+
+    systemd = {
+      enable = true;
+      extraFlags = [
+        "--systemd.collector.enable-ip-accounting"
+        "--systemd.collector.enable-restart-count"
+      ];
+    };
+  };
+
+  services.prometheus.scrapeConfigs = [
+    {
+      job_name = "node";
+      static_configs = [{
+        targets = [ "${hostName}:${toString exporters.node.port}" ];
+      }];
+    }
+    {
+      job_name = "systemd";
+      static_configs = [{
+        targets = [ "${hostName}:${toString exporters.systemd.port}" ];
+      }];
+    }
+  ];
+}