Merge branch 'master' into dist/eole/2.6.2/master

dicos/70_prometheus.xml

@@ -5,6 +5,7 @@
         <file filelist='prometheus'   name='/etc/prometheus/prometheus.yml'          mkdir='True' rm='True'/>
         <file filelist='alertmanager' name='/etc/prometheus/alertmanager.yml'        mkdir='True' rm='True'/>
         <file filelist='alertmanager' name='/etc/prometheus/rules.d/alert-rules.yml' mkdir='True' rm='True'/>
+        <file filelist='alertmanager' name='/etc/prometheus/rules.d/predict-rules.yml' mkdir='True' rm='True'/>
         <file filelist='grafana'      name='/etc/grafana/grafana.ini'                mkdir='True' rm='True'/>
 
         <service>prometheus</service>

tmpl/alertmanager.yml

@@ -10,6 +10,7 @@ global:
   smtp_smarthost: '%%exim_relay_smtp:465'
   smtp_require_tls: true
   %end if
+  smtp_from: '%%system_mail_from'
 %else
   smtp_smarthost: '%%alSMTPHost:%%alSMTPPort'
   smtp_from: '%%alFrom'

tmpl/predict-rules.yml

@@ -0,0 +1,6 @@
+groups:
+  - name: PredictRules
+    rules:
+      - alert: disk_full_within_6_hours
+        expr: predict_linear(node_filesystem_free{job="%%{job_name_node}",mountpoint="/"}[1h], 6 * 3600) < 0
+        for: 5m