Update homepage values.yaml to replace external siteMonitor URLs with in-cluster service URLs for improved reliability. Enhance comments for clarity on service monitoring and Prometheus widget configurations. Adjust description for better accuracy regarding uptime checks and resource monitoring.

clusters/noble/apps/homepage/values.yaml

@@ -2,12 +2,14 @@
 # Ingress: Traefik + cert-manager (same pattern as `clusters/noble/bootstrap/headlamp/values.yaml`).
 # Service links match **`ansible/roles/noble_landing_urls/defaults/main.yml`** (`noble_lab_ui_entries`).
 #
-# UI: **`siteMonitor`** on each link (HEAD/GET latency + status). **`widgets`**: datetime, Kubernetes
-# (cluster + node CPU/memory), Prometheus (scrape targets), search. **`enableRbac`** enables the
-# Kubernetes integration (in-cluster ServiceAccount).
+# **`siteMonitor`** runs **server-side** in the Homepage pod (see `gethomepage/homepage` `siteMonitor.js`).
+# Public FQDNs like **`*.apps.noble.lab.pcenicni.dev`** often do **not** resolve inside the cluster
+# (split-horizon / LAN DNS only) → `ENOTFOUND` / HTTP **500** in the monitor. Use **in-cluster Service**
+# URLs for **`siteMonitor`** only; **`href`** stays the human-facing ingress URL.
 #
-# Prometheus URL: in-cluster DNS for **kube-prometheus** release — adjust if your Service name differs
-# (`kubectl -n monitoring get svc | grep prometheus`).
+# **Prometheus widget** also resolves from the pod — use the real **Service** name (Helm may truncate to
+# 63 chars — this repo’s generated UI list uses **`kube-prometheus-kube-prome-prometheus`**).
+# Verify: `kubectl -n monitoring get svc | grep -E 'prometheus|alertmanager|grafana'`.
 #
 image:
   repository: ghcr.io/gethomepage/homepage
@@ -45,41 +47,42 @@ config:
         - Argo CD:
             icon: si-argocd
             href: https://argo.apps.noble.lab.pcenicni.dev
-            siteMonitor: https://argo.apps.noble.lab.pcenicni.dev
+            siteMonitor: http://argocd-server.argocd.svc.cluster.local:80
             description: GitOps UI (sync, apps, repos)
         - Grafana:
             icon: si-grafana
             href: https://grafana.apps.noble.lab.pcenicni.dev
-            siteMonitor: https://grafana.apps.noble.lab.pcenicni.dev
+            siteMonitor: http://kube-prometheus-grafana.monitoring.svc.cluster.local:80
             description: Dashboards, Loki explore (logs)
         - Prometheus:
             icon: si-prometheus
             href: https://prometheus.apps.noble.lab.pcenicni.dev
-            siteMonitor: https://prometheus.apps.noble.lab.pcenicni.dev
+            siteMonitor: http://kube-prometheus-kube-prome-prometheus.monitoring.svc.cluster.local:9090
             description: Prometheus UI (queries, targets) — lab; protect in production
             widget:
               type: prometheus
-              url: http://kube-prometheus-kube-prometheus-prometheus.monitoring.svc:9090
+              url: http://kube-prometheus-kube-prome-prometheus.monitoring.svc.cluster.local:9090
               fields: ["targets_up", "targets_down", "targets_total"]
         - Alertmanager:
             icon: alertmanager.png
             href: https://alertmanager.apps.noble.lab.pcenicni.dev
-            siteMonitor: https://alertmanager.apps.noble.lab.pcenicni.dev
+            siteMonitor: http://kube-prometheus-kube-prome-alertmanager.monitoring.svc.cluster.local:9093
             description: Alertmanager UI (silences, status)
         - Headlamp:
             icon: mdi-kubernetes
             href: https://headlamp.apps.noble.lab.pcenicni.dev
-            siteMonitor: https://headlamp.apps.noble.lab.pcenicni.dev
+            siteMonitor: http://headlamp.headlamp.svc.cluster.local:80
             description: Kubernetes UI (cluster resources)
         - Longhorn:
             icon: longhorn.png
             href: https://longhorn.apps.noble.lab.pcenicni.dev
-            siteMonitor: https://longhorn.apps.noble.lab.pcenicni.dev
+            siteMonitor: http://longhorn-frontend.longhorn-system.svc.cluster.local:80
             description: Storage volumes, nodes, backups
         - Vault:
             icon: si-vault
             href: https://vault.apps.noble.lab.pcenicni.dev
-            siteMonitor: https://vault.apps.noble.lab.pcenicni.dev
+            # Unauthenticated health (HEAD/GET) — not the redirecting UI root
+            siteMonitor: http://vault.vault.svc.cluster.local:8200/v1/sys/health?standbyok=true&sealedcode=204&uninitcode=204
             description: Secrets engine UI (after init/unseal)
   widgets:
     - datetime:
@@ -106,7 +109,7 @@ config:
     mode: cluster
   settingsString: |
     title: Noble Lab
-    description: Homelab services — per-link uptime, cluster resources, and Prometheus targets on the Prometheus card
+    description: Homelab services — in-cluster uptime checks, cluster resources, Prometheus targets
     theme: dark
     color: slate
     headerStyle: boxedWidgets