Update rule for host memory underutilization to use avg_over_time ins…

…tead of rate, since node_memory_MemAvailable_bytes is a gauge (#400)
samber · Jan 26, 2024 · 56a7e0d · 56a7e0d
1 parent df4016b
commit 56a7e0d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/dist/rules/host-and-hardware/node-exporter.yml b/dist/rules/host-and-hardware/node-exporter.yml
@@ -23,7 +23,7 @@ groups:
         description: "The node is under heavy memory pressure. High rate of major page faults\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
 
     - alert: HostMemoryIsUnderutilized
-      expr: '(100 - (rate(node_memory_MemAvailable_bytes[30m]) / node_memory_MemTotal_bytes * 100) < 20) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}'
+      expr: '(100 - (avg_over_time(node_memory_MemAvailable_bytes[30m]) / node_memory_MemTotal_bytes * 100) < 20) * on(instance) group_left (nodename) node_uname_info{nodename=~".+"}'
       for: 1w
       labels:
         severity: info