prometheus: add job for node exporter (for the NixOS VMs for now)

playbooks/files/chaosknoten/configs/grafana/docker_compose/prometheus.yml

@@ -12,8 +12,6 @@ alerting:
 scrape_configs:
 - job_name: prometheus
   honor_timestamps: true
-  scrape_interval: 15s
-  scrape_timeout: 10s
   metrics_path: /metrics
   scheme: http
   static_configs:
@@ -81,3 +79,20 @@ scrape_configs:
       target_label: instance
     - target_label: __address__
       replacement: pve-exporter:9221
+- job_name: hosts
+  static_configs:
+    - labels:
+        site: wieske
+        type: virtual_machine
+        hypervisor: chaosknoten
+      targets:
+        - netbox-intern.hamburg.ccc.de:9100
+        - matrix-intern.hamburg.ccc.de:9100
+        - public-web-static-intern.hamburg.ccc.de:9100
+        - git-intern.hamburg.ccc.de:9100
+        - forgejo-actions-runner-intern.hamburg.ccc.de:9100
+        - eh22-wiki-intern.hamburg.ccc.de:9100
+        - nix-box-june-intern.hamburg.ccc.de:9100
+        - mjolnir-intern.hamburg.ccc.de:9100
+        - woodpecker-intern.hamburg.ccc.de:9100
+        - penpot-intern.hamburg.ccc.de:9100