Add configuration for Postgres Prom exporter

roles/pvc/handlers/main.yml

@@ -21,6 +21,11 @@
     state: restarted
   ignore_errors: yes
 
+- name: restart prometheus-postgres
+  service:
+    name: prometheus-postgres-exporter
+    state: restarted
+
 - name: restart keydb
   service:
     name: keydb-server

roles/pvc/tasks/patroni/main.yml

@@ -46,6 +46,17 @@
   until: apt_res is success
   when: enable_prometheus_exporters is defined and enable_prometheus_exporters
 
+- name: install Prometheus postgresql exporter config if enabled
+  template:
+    src: patroni/prometheus.env.j2
+    dest: /etc/default/prometheus-postgres-exporter
+    owner: prometheus
+    group: prometheus
+    mode: 0640
+  notify:
+    - restart prometheus-postgres
+  when: enable_prometheus_exporters is defined and enable_prometheus_exporters
+
 - name: stop and disable postgresql
   service:
     name: "{{ item }}"

roles/pvc/templates/patroni/prometheus.env.j2

@@ -0,0 +1,5 @@
+# Prometheus Postgres exporter configuration
+# {{ ansible_managed }}
+
+DATA_SURCE_NAME="host=/run/postgresql dbname=postgres"
+ARGS=""