From 6a3d1311b9b2142753e022da07e0f5f3016b6b46 Mon Sep 17 00:00:00 2001
From: Brad Stein <Brad.Stein@gmail.com>
Date: Sat, 13 Dec 2025 04:15:03 -0300
Subject: [PATCH] atlas pods: select per-namespace top node via max match

---
 scripts/dashboards_render_atlas.py              | 9 +++++++--
 services/monitoring/dashboards/atlas-pods.json  | 2 +-
 services/monitoring/grafana-dashboard-pods.yaml | 2 +-
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/scripts/dashboards_render_atlas.py b/scripts/dashboards_render_atlas.py
index 2a30b14..8af8089 100644
--- a/scripts/dashboards_render_atlas.py
+++ b/scripts/dashboards_render_atlas.py
@@ -1176,8 +1176,13 @@ def build_pods_dashboard():
         table_panel(
             10,
             "Namespace Plurality by Node",
-            'topk(1, sum by (namespace,node) (kube_pod_info{pod!=""}) '
-            '/ on(namespace) group_left sum by (namespace) (kube_pod_info{pod!=""}))',
+            '('
+            ' (sum by (namespace,node) (kube_pod_info{pod!=""}) '
+            '   / sum by (namespace) (kube_pod_info{pod!=""})) '
+            '== on(namespace) '
+            ' max by (namespace) (sum by (namespace,node) (kube_pod_info{pod!=""}) '
+            '   / sum by (namespace) (kube_pod_info{pod!=""}))'
+            ')',
             {"h": 8, "w": 24, "x": 0, "y": 42},
             unit="percent",
             transformations=[
diff --git a/services/monitoring/dashboards/atlas-pods.json b/services/monitoring/dashboards/atlas-pods.json
index cece44a..07a9b1b 100644
--- a/services/monitoring/dashboards/atlas-pods.json
+++ b/services/monitoring/dashboards/atlas-pods.json
@@ -508,7 +508,7 @@
       },
       "targets": [
         {
-          "expr": "topk(1, sum by (namespace,node) (kube_pod_info{pod!=\"\"}) / on(namespace) group_left sum by (namespace) (kube_pod_info{pod!=\"\"}))",
+          "expr": "( (sum by (namespace,node) (kube_pod_info{pod!=\"\"})    / sum by (namespace) (kube_pod_info{pod!=\"\"})) == on(namespace)  max by (namespace) (sum by (namespace,node) (kube_pod_info{pod!=\"\"})    / sum by (namespace) (kube_pod_info{pod!=\"\"})))",
           "refId": "A",
           "instant": true
         }
diff --git a/services/monitoring/grafana-dashboard-pods.yaml b/services/monitoring/grafana-dashboard-pods.yaml
index 76cf4c1..17a8618 100644
--- a/services/monitoring/grafana-dashboard-pods.yaml
+++ b/services/monitoring/grafana-dashboard-pods.yaml
@@ -517,7 +517,7 @@ data:
           },
           "targets": [
             {
-              "expr": "topk(1, sum by (namespace,node) (kube_pod_info{pod!=\"\"}) / on(namespace) group_left sum by (namespace) (kube_pod_info{pod!=\"\"}))",
+              "expr": "( (sum by (namespace,node) (kube_pod_info{pod!=\"\"})    / sum by (namespace) (kube_pod_info{pod!=\"\"})) == on(namespace)  max by (namespace) (sum by (namespace,node) (kube_pod_info{pod!=\"\"})    / sum by (namespace) (kube_pod_info{pod!=\"\"})))",
               "refId": "A",
               "instant": true
             }