diff --git a/infrastructures/postgresql/env/k3s-cluster/templates/ingress.yaml b/infrastructures/postgresql/env/k3s-cluster/ingress.yaml
similarity index 100%
rename from infrastructures/postgresql/env/k3s-cluster/templates/ingress.yaml
rename to infrastructures/postgresql/env/k3s-cluster/ingress.yaml
diff --git a/infrastructures/postgresql/env/k3s-cluster/kustomization.yaml b/infrastructures/postgresql/env/k3s-cluster/kustomization.yaml
new file mode 100644
index 0000000..6301cb5
--- /dev/null
+++ b/infrastructures/postgresql/env/k3s-cluster/kustomization.yaml
@@ -0,0 +1,11 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ./volume.yaml
+  - ./ingress.yaml
+helmCharts:
+  - name: postgresql
+    repo: oci://registry-1.docker.io/bitnamicharts
+    version: 15.5.17
+    releaseName: postgresql
+    valuesFile: values.yaml
\ No newline at end of file
diff --git a/infrastructures/postgresql/env/k3s-cluster/values.yaml b/infrastructures/postgresql/env/k3s-cluster/values.yaml
index 278771c..39ebf02 100644
--- a/infrastructures/postgresql/env/k3s-cluster/values.yaml
+++ b/infrastructures/postgresql/env/k3s-cluster/values.yaml
@@ -1,9 +1,29 @@
 auth:
-  postgresPassword: ${postgres_password}
-  username: ${username}
-  password: ${password}
-  database: ${database}
-  replicationPassword: ${replication_password}
+  postgresPassword:
+    valueFrom:
+      secretKeyRef:
+        name: postgresql-secrets
+        key: postgres_password
+  username:
+    valueFrom:
+      secretKeyRef:
+        name: postgresql-secrets
+        key: username
+  password:
+    valueFrom:
+      secretKeyRef:
+        name: postgresql-secrets
+        key: password
+  database:
+    valueFrom:
+      secretKeyRef:
+        name: postgresql-secrets
+        key: database
+  replicationPassword:
+    valueFrom:
+      secretKeyRef:
+        name: postgresql-secrets
+        key: replication_password
 architecture: "replication"
 replication:
   synchronousCommit: "on"
diff --git a/infrastructures/postgresql/env/k3s-cluster/templates/volume.yaml b/infrastructures/postgresql/env/k3s-cluster/volume.yaml
similarity index 100%
rename from infrastructures/postgresql/env/k3s-cluster/templates/volume.yaml
rename to infrastructures/postgresql/env/k3s-cluster/volume.yaml