postgres metrics

apps/immich/postgres.yaml

@@ -21,3 +21,14 @@ spec:
     size: 1Gi
     storageClass: nfs-client
 
+---
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: postgres-exporter
+spec:
+  selector:
+    matchLabels:
+      "cnpg.io/cluster": immich-postgres
+  podMetricsEndpoints:
+  - port: metrics