From 4679f3cf419c8ee0040933ed009b04a01fb8bd43 Mon Sep 17 00:00:00 2001
From: maddin <martin.manka@gmx.de>
Date: Wed, 5 Aug 2026 11:03:57 +0200
Subject: [PATCH] Helm Chart: Add existingClaim to persistence

---
 pkg/helm/README.md                 | 1 +
 pkg/helm/templates/deployment.yaml | 2 +-
 pkg/helm/templates/pvc.yaml        | 4 ++--
 pkg/helm/values.yaml               | 2 +-
 4 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/pkg/helm/README.md b/pkg/helm/README.md
index a719ecf78a1..7120effbcad 100644
--- a/pkg/helm/README.md
+++ b/pkg/helm/README.md
@@ -35,6 +35,7 @@ The chart should dump its version and appVersion in the Chart.yaml file every re
 | `preferences.data` | Preferences to load | `{}` |
 | `resources.*` | Allocated requests and limits resources | `{"requests": {...}, "limits": {...}}` |
 | `persistence.enabled` | PVC resource creation | `true` |
+| `persistence.existingClaim` | Provide existing PVC instead of creating one | `""` |
 | `service.type` | Service type | `"ClusterIP"` |
 | `service.loadBalancerIP` | Load balancer IP (Only if service.type is LoadBalancer) | `""` |
 | `ingress.enabled` | Ingress resource creation | `false` |
diff --git a/pkg/helm/templates/deployment.yaml b/pkg/helm/templates/deployment.yaml
index b2c6c4620c3..5c12294868b 100644
--- a/pkg/helm/templates/deployment.yaml
+++ b/pkg/helm/templates/deployment.yaml
@@ -66,7 +66,7 @@ spec:
       {{- if .Values.persistence.enabled }}
         - name: data
           persistentVolumeClaim:
-            claimName: {{ template "pgadmin4.fullname" . }}
+            claimName: {{ .Values.persistence.existingClaim | default (include "pgadmin4.fullname" .) }}
       {{- end }}
       {{- if .Values.config_local.enabled }}
         - name: config-local
diff --git a/pkg/helm/templates/pvc.yaml b/pkg/helm/templates/pvc.yaml
index 74cc7c40ee0..ffbe215ccdd 100644
--- a/pkg/helm/templates/pvc.yaml
+++ b/pkg/helm/templates/pvc.yaml
@@ -1,4 +1,4 @@
-{{- if .Values.persistence.enabled }}
+{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) }}
 apiVersion: v1
 kind: PersistentVolumeClaim
 metadata:
@@ -17,4 +17,4 @@ spec:
     requests:
       storage: {{ .Values.persistence.size }}
   accessModes: {{ .Values.persistence.accessModes }}
-{{- end }}
\ No newline at end of file
+{{- end }}
diff --git a/pkg/helm/values.yaml b/pkg/helm/values.yaml
index cedbb2bb994..47b8da5bf74 100644
--- a/pkg/helm/values.yaml
+++ b/pkg/helm/values.yaml
@@ -88,6 +88,7 @@ persistence:
   size: 1Gi
   storageClass: ""
   accessModes: ["ReadWriteOnce"]
+  existingClaim: ""
 
 service:
   type: ClusterIP
@@ -179,4 +180,3 @@ containerSecurityContext:
     type: RuntimeDefault
   windowsOptions:
     hostProcess: false
-