From 4facdd8515e691cb37d6eeee10445bf53eca9865 Mon Sep 17 00:00:00 2001
From: chemavx <bot@chemavx.xyz>
Date: Sun, 26 Apr 2026 15:46:39 +0000
Subject: [PATCH] =?UTF-8?q?fix(monitoring):=20correct=20alert=20rule=20pip?=
 =?UTF-8?q?eline=20to=20A=E2=86=92B(reduce)=E2=86=92C(threshold)?=
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Grafana threshold expression requires a scalar input, not a raw time
series. Added explicit reduce step (type: reduce, reducer: last) as
refId B between the Prometheus query (A) and the threshold check (C).

All 4 rules updated: CrashLoopBackOff, Disco >80%, RAM >85%, Pod Failed.
condition field changed from B → C on each rule.
---
 monitoring/configmap-grafana-alerting.yaml | 84 ++++++++++++++--------
 1 file changed, 56 insertions(+), 28 deletions(-)

diff --git a/monitoring/configmap-grafana-alerting.yaml b/monitoring/configmap-grafana-alerting.yaml
index c48c84f..1aa505f 100644
--- a/monitoring/configmap-grafana-alerting.yaml
+++ b/monitoring/configmap-grafana-alerting.yaml
@@ -43,7 +43,7 @@ data:
 
           - uid: homelab-crashloop
             title: "Pod CrashLoopBackOff"
-            condition: B
+            condition: C
             for: 1m
             noDataState: OK
             execErrState: Error
@@ -66,18 +66,25 @@ data:
                 relativeTimeRange: {from: 0, to: 0}
                 datasourceUid: "-100"
                 model:
-                  type: threshold
+                  type: reduce
                   refId: B
+                  expression: A
+                  reducer: last
+                  settings:
+                    mode: ""
+              - refId: C
+                relativeTimeRange: {from: 0, to: 0}
+                datasourceUid: "-100"
+                model:
+                  type: threshold
+                  refId: C
+                  expression: B
                   conditions:
-                    - type: query
-                      evaluator: {params: [0], type: gt}
-                      operator: {type: and}
-                      query: {params: [A]}
-                      reducer: {params: [], type: last}
+                    - evaluator: {params: [0], type: gt}
 
           - uid: homelab-disk-high
             title: "Disco > 80%"
-            condition: B
+            condition: C
             for: 5m
             noDataState: NoData
             execErrState: Error
@@ -100,18 +107,25 @@ data:
                 relativeTimeRange: {from: 0, to: 0}
                 datasourceUid: "-100"
                 model:
-                  type: threshold
+                  type: reduce
                   refId: B
+                  expression: A
+                  reducer: last
+                  settings:
+                    mode: ""
+              - refId: C
+                relativeTimeRange: {from: 0, to: 0}
+                datasourceUid: "-100"
+                model:
+                  type: threshold
+                  refId: C
+                  expression: B
                   conditions:
-                    - type: query
-                      evaluator: {params: [0.8], type: gt}
-                      operator: {type: and}
-                      query: {params: [A]}
-                      reducer: {params: [], type: last}
+                    - evaluator: {params: [0.8], type: gt}
 
           - uid: homelab-ram-high
             title: "RAM > 85%"
-            condition: B
+            condition: C
             for: 5m
             noDataState: NoData
             execErrState: Error
@@ -134,18 +148,25 @@ data:
                 relativeTimeRange: {from: 0, to: 0}
                 datasourceUid: "-100"
                 model:
-                  type: threshold
+                  type: reduce
                   refId: B
+                  expression: A
+                  reducer: last
+                  settings:
+                    mode: ""
+              - refId: C
+                relativeTimeRange: {from: 0, to: 0}
+                datasourceUid: "-100"
+                model:
+                  type: threshold
+                  refId: C
+                  expression: B
                   conditions:
-                    - type: query
-                      evaluator: {params: [0.85], type: gt}
-                      operator: {type: and}
-                      query: {params: [A]}
-                      reducer: {params: [], type: last}
+                    - evaluator: {params: [0.85], type: gt}
 
           - uid: homelab-pod-failed
             title: "Pod Failed/Unknown"
-            condition: B
+            condition: C
             for: 3m
             noDataState: OK
             execErrState: Error
@@ -168,11 +189,18 @@ data:
                 relativeTimeRange: {from: 0, to: 0}
                 datasourceUid: "-100"
                 model:
-                  type: threshold
+                  type: reduce
                   refId: B
+                  expression: A
+                  reducer: last
+                  settings:
+                    mode: ""
+              - refId: C
+                relativeTimeRange: {from: 0, to: 0}
+                datasourceUid: "-100"
+                model:
+                  type: threshold
+                  refId: C
+                  expression: B
                   conditions:
-                    - type: query
-                      evaluator: {params: [0], type: gt}
-                      operator: {type: and}
-                      query: {params: [A]}
-                      reducer: {params: [], type: last}
+                    - evaluator: {params: [0], type: gt}