fix(monitoring): Prometheus 단일 복제본 대시보드 정합성

Author: Neibce

kubernetes/monitoring/grafana-dashboard-monitoring-stack.yaml

@@ -246,21 +246,20 @@ data:
         },
         {
           "type": "stat",
-          "title": "Prometheus ready replicas / 2",
+          "title": "Prometheus ready replicas / 1",
           "gridPos": {"x": 0, "y": 21, "w": 6, "h": 5},
           "datasource": "Prometheus",
           "fieldConfig": {
             "defaults": {
               "unit": "short",
               "min": 0,
-              "max": 2,
+              "max": 1,
               "noValue": "ABSENT",
               "thresholds": {
                 "mode": "absolute",
                 "steps": [
                   {"color": "dark-red", "value": null},
-                  {"color": "orange", "value": 1},
-                  {"color": "green", "value": 2}
+                  {"color": "green", "value": 1}
                 ]
               }
             },