Fix alert recovery, bound backup job history and expand data volumes

apps/prometheus/values.yaml

@@ -2,9 +2,20 @@ grafana:
   enabled: false
 
 defaultRules:
+  disabled:
+    KubeCPUOvercommit: true
   rules:
     kubeProxy: false
 
+prometheus-node-exporter:
+  prometheus:
+    monitor:
+      metricRelabelings:
+        # These bind mounts share /mnt's capacity; retain its canonical gauges.
+        - sourceLabels: [__name__, fstype, mountpoint]
+          regex: 'node_filesystem_.+;bcachefs;(/komposthaufen|/var/www|/var/lib/(lidarr|prowlarr|radarr|readarr|sonarr|whisparr)|/home/feedc0de/(\.steam/steamapps|mcserver/plugins/dynmap/web/tiles))'
+          action: drop
+
 alertmanager:
   ingress:
     enabled: true