diff --git a/apps/ombi-postgresql/cluster/cluster.yaml b/apps/ombi-postgresql/cluster/cluster.yaml
index b963025..2569ff3 100644
--- a/apps/ombi-postgresql/cluster/cluster.yaml
+++ b/apps/ombi-postgresql/cluster/cluster.yaml
@@ -6,6 +6,28 @@ metadata:
 spec:
   instances: 1
   enableSuperuserAccess: true
+  affinity:
+    nodeAffinity:
+      requiredDuringSchedulingIgnoredDuringExecution:
+        nodeSelectorTerms:
+          - matchExpressions:
+              - key: kubernetes.io/hostname
+                operator: In
+                values:
+                  - odroid-h3-00
+                  - odroid-h3-01
+                  - odroid-h3-02
+                  - odroid-h3-03
+                  - odroid-h3-04
+      preferredDuringSchedulingIgnoredDuringExecution:
+        - weight: 100
+          preference:
+            matchExpressions:
+              - key: kubernetes.io/hostname
+                operator: In
+                values:
+                  - odroid-h3-00
+                  - odroid-h3-03
   imageName: ghcr.io/cloudnative-pg/postgresql:17.11-standard-trixie
   bootstrap:
     initdb: