From b2f5d62067a54c1e86f20fe4e6d43ecddf059e99 Mon Sep 17 00:00:00 2001
From: 0xFEEDC0DE64 <daniel@brunner.ninja>
Date: Fri, 23 Oct 2026 20:10:17 +0200
Subject: [PATCH] grafana: add declarative alert status dashboard

---
 apps/grafana/resources/alert-status.json  | 105 ++++++++++++++++++++++
 apps/grafana/resources/kustomization.yaml |   7 ++
 2 files changed, 112 insertions(+)
 create mode 100644 apps/grafana/resources/alert-status.json

diff --git a/apps/grafana/resources/alert-status.json b/apps/grafana/resources/alert-status.json
new file mode 100644
index 0000000..697e734
--- /dev/null
+++ b/apps/grafana/resources/alert-status.json
@@ -0,0 +1,105 @@
+{
+  "annotations": {"list": []},
+  "description": "Current and historical firing Prometheus alerts. Public view shows only alert name, namespace and severity; it omits instance labels and annotations.",
+  "editable": false,
+  "fiscalYearStartMonth": 0,
+  "graphTooltip": 1,
+  "id": null,
+  "links": [],
+  "panels": [
+    {
+      "datasource": {"type": "prometheus", "uid": "aevstx976yku8a"},
+      "description": "Number of distinct alert-name/namespace/severity groups firing now. Multiple instances of one alert are counted once.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"mode": "thresholds"},
+          "mappings": [],
+          "thresholds": {"mode": "absolute", "steps": [{"color": "green", "value": null}, {"color": "red", "value": 1}]},
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {"h": 5, "w": 24, "x": 0, "y": 0},
+      "id": 1,
+      "options": {
+        "colorMode": "background",
+        "graphMode": "none",
+        "justifyMode": "center",
+        "orientation": "auto",
+        "reduceOptions": {"calcs": ["lastNotNull"], "fields": "", "values": false},
+        "textMode": "value_and_name"
+      },
+      "targets": [{
+        "editorMode": "code",
+        "expr": "count(sum by (alertname, namespace, severity) (ALERTS{alertstate=\"firing\",alertname!~\"Watchdog|InfoInhibitor\"})) or vector(0)",
+        "instant": true,
+        "range": false,
+        "refId": "A"
+      }],
+      "title": "Firing alert groups now",
+      "type": "stat"
+    },
+    {
+      "datasource": {"type": "prometheus", "uid": "aevstx976yku8a"},
+      "description": "Current firing alerts, grouped to avoid publishing host or instance labels. Instances is the number of active series in each group.",
+      "fieldConfig": {"defaults": {"custom": {"align": "auto", "cellOptions": {"type": "auto"}}}, "overrides": []},
+      "gridPos": {"h": 11, "w": 24, "x": 0, "y": 5},
+      "id": 2,
+      "options": {"cellHeight": "sm", "showHeader": true},
+      "targets": [{
+        "editorMode": "code",
+        "expr": "sum by (alertname, namespace, severity) (ALERTS{alertstate=\"firing\",alertname!~\"Watchdog|InfoInhibitor\"})",
+        "format": "table",
+        "instant": true,
+        "range": false,
+        "refId": "A"
+      }],
+      "title": "Firing alerts",
+      "transformations": [{
+        "id": "organize",
+        "options": {
+          "excludeByName": {"Time": true},
+          "indexByName": {"alertname": 0, "namespace": 1, "severity": 2, "Value": 3},
+          "renameByName": {"alertname": "Alert", "namespace": "Namespace", "severity": "Severity", "Value": "Instances"}
+        }
+      }],
+      "type": "table"
+    },
+    {
+      "datasource": {"type": "prometheus", "uid": "aevstx976yku8a"},
+      "description": "Red means an alert was firing. Gaps mean it was not firing. History is limited to Prometheus retention (currently 15 days); this is not an archive of Alertmanager notifications.",
+      "fieldConfig": {
+        "defaults": {
+          "color": {"fixedColor": "red", "mode": "fixed"},
+          "custom": {"fillOpacity": 85, "lineWidth": 0, "spanNulls": false},
+          "mappings": [{"options": {"1": {"color": "red", "index": 0, "text": "Firing"}}, "type": "value"}],
+          "noValue": "No firing alerts"
+        },
+        "overrides": []
+      },
+      "gridPos": {"h": 16, "w": 24, "x": 0, "y": 16},
+      "id": 3,
+      "options": {"alignValue": "center", "mergeValues": true, "rowHeight": 0.8, "showValue": "never", "tooltip": {"mode": "single", "sort": "none"}},
+      "targets": [{
+        "editorMode": "code",
+        "expr": "max by (alertname, namespace, severity) (ALERTS{alertstate=\"firing\",alertname!~\"Watchdog|InfoInhibitor\"})",
+        "instant": false,
+        "legendFormat": "{{alertname}} ({{namespace}} · {{severity}})",
+        "range": true,
+        "refId": "A"
+      }],
+      "title": "Firing alert history",
+      "type": "state-timeline"
+    }
+  ],
+  "refresh": "30s",
+  "schemaVersion": 41,
+  "tags": ["alerts", "status"],
+  "templating": {"list": []},
+  "time": {"from": "now-7d", "to": "now"},
+  "timepicker": {},
+  "timezone": "browser",
+  "title": "Alert status",
+  "uid": "homelab-alert-status",
+  "version": 1
+}
diff --git a/apps/grafana/resources/kustomization.yaml b/apps/grafana/resources/kustomization.yaml
index ac2bb70..7aad981 100644
--- a/apps/grafana/resources/kustomization.yaml
+++ b/apps/grafana/resources/kustomization.yaml
@@ -7,6 +7,13 @@ resources:
 - kubernetes-pvc-overview-dashboard.yaml
 - mikrotik-storage-dashboard.yaml
 configMapGenerator:
+- name: alert-status-dashboard
+  files:
+  - alert-status.json
+  options:
+    disableNameSuffixHash: true
+    labels:
+      grafana_dashboard: "1"
 - name: traefik-official-dashboard
   files:
   - traefik-official.json