Chart: postgresql.existingClaim for a database volume made outside the chart

charts/archify-sync/templates/postgresql.yaml

@@ -97,6 +97,12 @@ spec:
       volumes:
         - name: run
           emptyDir: {}
+        {{- with .Values.postgresql.existingClaim }}
+        - name: data
+          persistentVolumeClaim:
+            claimName: {{ . }}
+        {{- end }}
+  {{- if not .Values.postgresql.existingClaim }}
   volumeClaimTemplates:
     - metadata:
         name: data
@@ -108,4 +114,5 @@ spec:
         resources:
           requests:
             storage: {{ .Values.postgresql.storage }}
+  {{- end }}
 {{- end }}