hosts/monitoring-3: Add berlinerbaeder-exporter

hosts/monitoring-3/berlinerbaeder-exporter.nix

@@ -0,0 +1,11 @@
+{ pkgs, ... }:
+{
+  systemd.services.berlinerbaeder-exporter = {
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      DynamicUser = true;
+    };
+    script = "berlinerbaeder-exporter --listen [::1]:57382";
+    path = with pkgs; [ berlinerbaeder-exporter ];
+  };
+}

hosts/monitoring-3/configuration.nix

@@ -6,6 +6,7 @@
       ./hardware-configuration.nix
       ../../configuration/proxmox-vm
       ./alertmanager.nix
+      ./berlinerbaeder-exporter.nix
       ./blackbox.nix
       ./grafana.nix
       ./nixos-validator.nix

hosts/monitoring-3/prometheus.nix

@@ -407,6 +407,20 @@ in {
           }
         ];
       }
+      {
+        job_name = "berlinerbaeder-exporter";
+        scrape_interval = "5m";
+        static_configs = [
+          {
+            targets = [
+              "monitoring-3.mon.clerie.de:57382"
+            ];
+          }
+        ];
+        relabel_configs = [
+          relabelAddressToInstance
+        ];
+      }
     ];
     alertmanagers = [
       {