cluster: add projected volume support

Author: plesoun-stein

charts/cluster/templates/cluster.yaml

@@ -131,3 +131,9 @@ spec:
     {{- end }}
   {{ include "cluster.bootstrap" . | nindent 2 }}
   {{ include "cluster.backup" . | nindent 2 }}
+  {{-  with .Values.cluster.projectedVolumeTemplate.sources }}
+  projectedVolumeTemplate:
+    sources:
+      {{- . | toYaml | nindent 8 -}}
+  {{ end }}
+

charts/cluster/values.yaml

@@ -302,6 +302,17 @@ cluster:
   additionalLabels: {}
   annotations: {}
 
+  # -- mounting custom files inside the Postgres pods through .spec.projectedVolumeTemplate 
+  # See https://cloudnative-pg.io/documentation/current/cluster_conf/#projected-volumes
+  projectedVolumeTemplate: {}
+    # sources:
+    #   - secret:
+    #       name: sample-secret
+    #       items:
+    #         - key: tls.crt
+    #           path: certificate/tls.crt
+    #         - key: tls.key
+    #           path: certificate/tls.key
 
 backups:
   # -- You need to configure backups manually, so backups are disabled by default.