add major version value

charts/postgres-cluster/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v2
 name: postgres-cluster
-version: 2.1.0
+version: 2.2.0
 description: Chart for cloudnative-pg cluster
 keywords:
   - database

charts/postgres-cluster/templates/_helpers.tpl

@@ -5,8 +5,7 @@ Expand the name of the chart.
   {{- if .Values.nameOverride }}
     {{- .Values.nameOverride | trunc 63 | trimSuffix "-" }}
   {{- else }}
-    {{ $version := split "." .Values.cluster.image.tag }}
-    {{- printf "postgresql-%s-%s" $version._0 .Release.Name | trunc 63 | trimSuffix "-" -}}
+    {{- printf "postgresql-%s-%s" .Values.cluster.image.majorVersion .Release.Name | trunc 63 | trimSuffix "-" -}}
   {{- end }}
 {{- end }}
 

charts/postgres-cluster/values.yaml

@@ -24,6 +24,7 @@ cluster:
   image:
     repository: ghcr.io/cloudnative-pg/postgresql
     tag: "16.2"
+    majorVersion: "16"
     pullPolicy: IfNotPresent
 
   # The UID and GID of the postgres user inside the image