ajout surveillance /var

tmpl/alert-rules.yml

@@ -34,6 +34,16 @@ groups:
   - alert: filesystem_threshold_exceeded
     expr: node_filesystem_avail{job="%%{job_name_node}",mountpoint="/"} / node_filesystem_size{job="%%{job_name_node}"}
       * 100 < 20
+    for: 2m
+    annotations:
+      description: This device's filesystem usage has exceeded the threshold with
+        a value of {{ $value }}.
+      summary: Instance {{ $labels.instance }} filesystem usage is dangerously high
+
+  # Heavy "/var" use
+  - alert: var_filesystem_threshold_exceeded
+    expr: node_filesystem_avail{job="node",mountpoint="/var"} / node_filesystem_size{job="node"}
+      * 100 < 20
     annotations:
       description: This device's filesystem usage has exceeded the threshold with
         a value of {{ $value }}.