add infrastructure monitoring

Add Clickstack (HyperDX) as the aggregation platform.
Configure Otel Collector to collect host metrics.

iac/ansible/roles/ceph_setup/tasks/main.yml

@@ -90,4 +90,19 @@
     src: "{{ hostvars[groups['managers'][0]]['ceph_bootstrap_ip'] }}:/"
     fstype: ceph
     opts: "name=admin,secret={{ ceph_admin_key.stdout }}"
-    state: mounted
+    state: mounted
+
+# Metriken aktivieren
+- name: CEPH | Prüfen, ob Prometheus Modul bereits aktiv ist
+  ansible.builtin.command: "ceph mgr module ls --format json"
+  register: ceph_modules_status
+  changed_when: false
+  delegate_to: "{{ groups['managers'][0] }}"
+  run_once: true
+
+- name: CEPH | Prometheus Modul aktivieren
+  ansible.builtin.command: "ceph mgr module enable prometheus"
+  # Wir prüfen im JSON-Output, ob 'prometheus' in der Liste 'enabled_modules' fehlt
+  when: "'prometheus' not in (ceph_modules_status.stdout | from_json).enabled_modules"
+  delegate_to: "{{ groups['managers'][0] }}"
+  run_once: true