diff --git a/apps/k8s01/keycloak/database-override.yaml b/apps/k8s01/keycloak/database-override.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..8a8cbdd4e3bb2a38c7a8095d57293d7be8822d5d
--- /dev/null
+++ b/apps/k8s01/keycloak/database-override.yaml
@@ -0,0 +1,7 @@
+apiVersion: "acid.zalan.do/v1"
+kind: postgresql
+metadata:
+  name: keycloak-postgres
+  namespace: keycloak
+spec:
+  numberOfInstances: 2
diff --git a/apps/k8s01/keycloak/kustomization.yaml b/apps/k8s01/keycloak/kustomization.yaml
index 55fc4d2b6c7ee69c8aaa241d202cdce9b1c55ca3..9ffc71b2f7b7622e80b7fc6d613530d3bbd6193a 100644
--- a/apps/k8s01/keycloak/kustomization.yaml
+++ b/apps/k8s01/keycloak/kustomization.yaml
@@ -6,3 +6,5 @@ resources:
   - keycloak-values.yaml
   - certificate.yaml
   - ../../../shared/resourcequotas/default.yaml
+patchesStrategicMerge:
+- database-override.yaml