[postgres] implement support for existingClaim (CloudPirates-io#212)

* [postgres] implement support for existingClaim

* Update CHANGELOG.md

Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

---------

Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: dloewen2

charts/postgres/CHANGELOG.md

@@ -1,8 +1,16 @@
 # Changelog
 
-## 0.6.1 (2025-09-29)
+## 0.7.1 (2025-10-02)
 
-* [Postgres] update default postgres config files ([#180](https://github.com/CloudPirates-io/helm-charts/pull/180))
+* [postgres] implement support for existingClaim ([#212](https://github.com/CloudPirates-io/helm-charts/pull/212))
+
+## 0.7.0 (2025-09-30)
+
+* make postgres run on openshift (#184) ([0396895](https://github.com/CloudPirates-io/helm-charts/commit/0396895)), closes [#184](https://github.com/CloudPirates-io/helm-charts/issues/184)
+
+## <small>0.6.1 (2025-09-29)</small>
+
+* update default postgres config files (#180) ([6385512](https://github.com/CloudPirates-io/helm-charts/commit/6385512)), closes [#180](https://github.com/CloudPirates-io/helm-charts/issues/180)
 
 ## <small>0.5.5 (2025-09-29)</small>
 

charts/postgres/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: postgres
 description: The World's Most Advanced Open Source Relational Database
 type: application
-version: 0.7.0
+version: 0.7.1
 appVersion: "18.0"
 keywords:
   - postgres

charts/postgres/templates/statefulset.yaml

@@ -198,6 +198,11 @@ spec:
         - name: data
           emptyDir: {}
         {{- end }}
+        {{- if .Values.persistence.existingClaim }}
+        - name: data
+          persistentVolumeClaim:
+            claimName: {{ .Values.persistence.existingClaim }}
+        {{- end }}
         {{- if not .Values.config.existingConfigmap }}
         - name: config
           configMap:
@@ -239,6 +244,7 @@ spec:
     whenDeleted: {{ .Values.persistentVolumeClaimRetentionPolicy.whenDeleted }}
     whenScaled: {{ .Values.persistentVolumeClaimRetentionPolicy.whenScaled }}
   {{- end }}
+  {{- if not .Values.persistence.existingClaim }}
   volumeClaimTemplates:
   - metadata:
       name: data
@@ -261,4 +267,5 @@ spec:
       storageClassName: {{ .Values.persistence.storageClass | quote }}
       {{- end }}
       {{- end }}
+    {{- end }}
   {{- end }}