metrics: Add the first (simple) custom metrics

deploy/ansible/playbooks/deploy-c3lf-sys3.yml

@@ -311,6 +311,16 @@
       notify:
         - restart c3lf-sys3
 
+    - name: add c3lf-sys3-cron service
+      template:
+        src: templates/c3lf-sys3-cron.service.j2
+        dest: /etc/systemd/system/c3lf-sys3-cron.service
+
+    - name: add c3lf-sys3-cron timer
+      template:
+        src: templates/c3lf-sys3-cron.timer.j2
+        dest: /etc/systemd/system/c3lf-sys3-cron.timer
+
     - name: reload systemd
       systemd:
         daemon_reload: yes
@@ -321,6 +331,12 @@
         state: started
         enabled: yes
 
+    - name: start c3lf-sys3 timer
+      service:
+        name: c3lf-sys3-cron.timer
+        state: started
+        enabled: yes
+
     - name: add postfix to www-data group
       user:
         name: postfix

deploy/ansible/playbooks/templates/c3lf-sys3-cron.service.j2

@@ -0,0 +1,13 @@
+[Unit]
+Description=c3lf sys3 background service
+After=network.target
+
+[Service]
+User=www-data
+Group=www-data
+WorkingDirectory=/var/www/c3lf-sys3
+ExecStart=/var/www/c3lf-sys3/venv/bin/python3 /var/www/c3lf-sys3/repo/core/manage.py update_metrics
+Environment=DJANGO_SETTINGS_MODULE=core.settings
+
+[Install]
+WantedBy=multi-user.target

deploy/ansible/playbooks/templates/c3lf-sys3-cron.timer.j2

@@ -0,0 +1,9 @@
+[Unit]
+Description=Run Nextcloud cron.php every 5 minutes
+
+[Timer]
+OnCalendar=minutely
+Unit=c3lf-sys3-cron.service
+
+[Install]
+WantedBy=timers.target