[monitoring] Add non-free for MIBs

monitoring.yml

@@ -30,7 +30,10 @@
     prometheus_snmp_targets:
       - targets:
           - pulsar.adm.crans.org
+    # Debian non-free mirror
+    debian_mirror: http://ftp.adm.crans.org/debian/
   roles:
+    - debian-non-free
     - prometheus
     - prometheus-alertmanager
 

roles/debian-non-free/tasks/main.yml

+---
+- name: Add Debian non-free repository
+  apt_repository:
+    repo: deb {{ debian_mirror }} {{ ansible_lsb.codename }} non-free
+    state: present

roles/prometheus/tasks/main.yml

@@ -5,6 +5,7 @@
     name:
       - prometheus
       - prometheus-snmp-exporter
+      - snmp-mibs-downloader  # To generate SNMP configuration
   register: apt_result
   retries: 3
   until: apt_result is succeeded