fix(grafana): NUT dashboard instance variable ignores stale series

The variable used label_values() which lists all instances across full retention, alphabetically sorting and auto-selecting the dead 127.0.0.1:9199 (relabeled to 'eaton' ~31h ago). Its stale series has no samples in the visible window so every panel rendered empty. Replace with query_result(count by (instance) (...)) which only surfaces live targets.
2026-09-06 23:51:22 +02:00
parent 65fdb4face
commit e4d0812a69
1 changed files with 2 additions and 1 deletions
@@ -16,7 +16,8 @@
        "label": "UPS",
        "type": "query",
        "datasource": { "type": "prometheus", "uid": "prometheus" },
-        "query": { "query": "label_values(network_ups_tools_device_info, instance)", "refId": "A" },
+        "query": { "query": "query_result(count by (instance) (network_ups_tools_device_info))", "refId": "A" },
+        "regex": "/.*instance=\"([^\"]+)\".*/",
        "refresh": 2,
        "multi": false,
        "includeAll": false,