ctucx.git: nixfiles

machines/trabbi/prometheus: automagically add hosts that have a node-exporter enabled as a target

diff --git a/machines/trabbi/prometheus.nix b/machines/trabbi/prometheus.nix
@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+{ nodes, config, lib, pkgs, ... }:
 
 {
 

@@ -28,18 +28,18 @@
           scheme          = "https";
           metrics_path    = "/node-exporter";
           static_configs  = [{
-            targets = [
-              "trabbi.ctu.cx"
-              "osterei.ctu.cx"
-              "wanderduene.ctu.cx"
-              "desastro.ctu.cx"
-              "lollo.ctu.cx"
-              "hector.ctu.cx"
+            targets = (lib.mapAttrsToList (
+              name: host: lib.mkIf (
+                host.config.services.prometheus.exporters.node.enable == true &&
+                host.config.networking.hostName != "" &&
+                host.config.networking.domain != ""
+              ) host.config.networking.fqdn
+            ) nodes) ++ [
               "stasicontainer.home.ctu.cx"
+              "mastodon.zug.network"
               "luna.f2k1.de"
               "jules.f2k1.de"
               "taurus.f2k1.de"
-              "mastodon.zug.network"
             ];
           }];
         }