flip expression

canonical · Jan 13, 2025 · 9427a7d · 9427a7d
1 parent e997c82
commit 9427a7d
Showing 1 changed file with 2 additions and 8 deletions.
diff --git a/src/prometheus_alert_rules/memory.rules b/src/prometheus_alert_rules/memory.rules
@@ -36,17 +36,11 @@ groups:
         The 5-minute-ahead prediction is made as a linear regression from the last 30 minutes of data.
   - alert: HostMemoryFull
     expr: |
-      100 *
-        (
-          (
-            avg_over_time(node_memory_MemTotal_bytes[1m])
-            - avg_over_time(node_memory_MemFree_bytes[1m])
-          ) - avg_over_time(node_memory_Hugetlb_bytes[1m])
-        ) /
+      100 * avg_over_time(node_memory_MemFree_bytes[1m]) /
         (
           avg_over_time(node_memory_MemTotal_bytes[1m])
           - avg_over_time(node_memory_Hugetlb_bytes[1m])
-        ) > 90
+        ) < 10
     for: 2m
     labels:
       severity: critical