Don't use separate WAL storage

This change will make the instance not use a separate WAL volume.

Any existing instance will keep its applied configuration. So it will
not break existing instances.

Author: Kidswiss

README.md

@@ -20,7 +20,7 @@ helm repo add appcat https://charts.appcat.ch
 | [![chart downloads](https://img.shields.io/github/downloads/vshn/appcat-charts/vshngaragebucket-0.0.1/total)](https://github.com/vshn/appcat-charts/releases/tag/vshngaragebucket-0.0.1) | [vshngaragebucket](charts/vshngaragebucket/README.md) |
 | [![chart downloads](https://img.shields.io/github/downloads/vshn/appcat-charts/vshngaragecluster-0.0.1/total)](https://github.com/vshn/appcat-charts/releases/tag/vshngaragecluster-0.0.1) | [vshngaragecluster](charts/vshngaragecluster/README.md) |
 | [![chart downloads](https://img.shields.io/github/downloads/vshn/appcat-charts/vshnmariadb-0.0.12/total)](https://github.com/vshn/appcat-charts/releases/tag/vshnmariadb-0.0.12) | [vshnmariadb](charts/vshnmariadb/README.md) |
-| [![chart downloads](https://img.shields.io/github/downloads/vshn/appcat-charts/vshnpostgresql-0.8.0/total)](https://github.com/vshn/appcat-charts/releases/tag/vshnpostgresql-0.8.0) | [vshnpostgresql](charts/vshnpostgresql/README.md) |
+| [![chart downloads](https://img.shields.io/github/downloads/vshn/appcat-charts/vshnpostgresql-0.8.1/total)](https://github.com/vshn/appcat-charts/releases/tag/vshnpostgresql-0.8.1) | [vshnpostgresql](charts/vshnpostgresql/README.md) |
 
 ## Add / Update Charts
 

charts/vshnpostgresql/Chart.yaml

@@ -20,8 +20,8 @@ apiVersion: v2
 name: vshnpostgresql
 description: A Helm chart for PostgreSQL clusters using the CloudNativePG operator
 type: application
-version: 0.8.0
-appVersion: 0.8.0
+version: 0.8.1
+appVersion: 0.8.1
 maintainers:
   - name: Schedar Team
     email: info@vshn.ch

charts/vshnpostgresql/README.md

@@ -1,6 +1,6 @@
 # vshnpostgresql
 
-![Version: 0.8.0](https://img.shields.io/badge/Version-0.8.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 0.8.0](https://img.shields.io/badge/AppVersion-0.8.0-informational?style=flat-square)
+![Version: 0.8.1](https://img.shields.io/badge/Version-0.8.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 0.8.1](https://img.shields.io/badge/AppVersion-0.8.1-informational?style=flat-square)
 
 A Helm chart for PostgreSQL clusters using the CloudNativePG operator
 

charts/vshnpostgresql/templates/cluster.yaml

@@ -1,3 +1,10 @@
+{{- $name := include "cluster.fullname" . -}}
+{{- $namespace := include "cluster.namespace" . -}}
+{{- $existingCluster := lookup "postgresql.cnpg.io/v1" "Cluster" $namespace $name -}}
+{{- $walStorage := false -}}
+{{- if $existingCluster -}}
+  {{- $walStorage = not (empty $existingCluster.spec.walStorage ) -}}
+{{- end -}}
 apiVersion: postgresql.cnpg.io/v1
 kind: Cluster
 metadata:
@@ -27,7 +34,7 @@ spec:
     {{- if not (empty .Values.cluster.storage.storageClass) }}
     storageClass: {{ .Values.cluster.storage.storageClass }}
     {{- end }}
-  {{- if .Values.cluster.walStorage.enabled }}
+  {{- if $walStorage }}
   walStorage:
     size: {{ .Values.cluster.walStorage.size }}
     {{- if not (empty .Values.cluster.walStorage.storageClass) }}