Add prometheus-node-exporter role and add it to most hosts

inventories/chaosknoten/hosts.yaml

@@ -108,6 +108,16 @@ all:
         pretalx:
         wiki:
         zammad:
+    prometheus_node_exporter_hosts:
+      hosts:
+        ccchoir:
+        tickets:
+        keycloak:
+        onlyoffice:
+        pad:
+        pretalx:
+        wiki:
+        zammad: 
     infrastructure_authorized_keys_hosts:
       hosts:
         ccchoir:

playbooks/deploy.yaml

@@ -82,6 +82,11 @@
   roles:
     - nginx
 
+- name: Ensure prometheus_node_exporter deployment on prometheus_node_exporter_hosts
+  hosts: prometheus_node_exporter_hosts
+  roles:
+    - prometheus_node_exporter
+
 - name: Configure unattended upgrades
   hosts: all
   become: true

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

@@ -98,9 +98,16 @@ scrape_configs:
         - woodpecker-intern.hamburg.ccc.de:9100
         - penpot-intern.hamburg.ccc.de:9100
         - jitsi.hamburg.ccc.de:9100
-    # Wieske Physical Machines
+        - onlyoffice-intern.hamburg.ccc.de:9100
+        - ccchoir-intern.hamburg.ccc.de:9100
+        - tickets-intern.hamburg.ccc.de:9100
+        - keycloak-intern.hamburg.ccc.de:9100
+        - onlyoffice-intern.hamburg.ccc.de:9100
+        - pad-intern.hamburg.ccc.de:9100
+        - wiki-intern.hamburg.ccc.de:9100
+        - zammad-intern.hamburg.ccc.de:9100
     - labels:
         site: wieske
         type: physical_machine
       targets:
-        - chaosknoten.hamburg.ccc.de:9100
+        - chaosknoten.hamburg.ccc.de:9100

playbooks/roles/prometheus_node_exporter/meta/main.yaml

@@ -0,0 +1,9 @@
+---
+dependencies:
+  - role: distribution_check
+    vars:
+      distribution_check__distribution_support_spec:
+        - name: Debian
+          major_versions:
+            - "11"
+            - "12"

playbooks/roles/prometheus_node_exporter/tasks/main.yaml

@@ -0,0 +1,14 @@
+- name: make sure the `prometheus-node-exporter` package is installed
+  ansible.builtin.apt:
+    name: prometheus-node-exporter
+    state: present
+    allow_change_held_packages: true
+    update_cache: true
+  become: true
+
+- name: make sure `prometheus-node-exporter.service` is started and ansibled
+  ansible.builtin.systemd:
+    name: prometheus-node-exporter.service
+    state: started
+    enabled: true
+  become: true