[bitnami/postgresql] Added publishNotReadyAddresses: true to svc-headless.yaml (#3990)

* Set endpoints to be published before readiness checks pass as these endpoints are required to bootstrap the Cluster and make the application ready.

* Incremented version number

bitnami/postgresql/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: postgresql
-version: 9.8.3
+version: 9.8.4
 appVersion: 11.9.0
 description: Chart for PostgreSQL, an object-relational database management system (ORDBMS) with an emphasis on extensibility and on standards-compliance.
 keywords:

bitnami/postgresql/templates/svc-headless.yaml

@@ -7,9 +7,18 @@ metadata:
   {{- if .Values.commonAnnotations }}
   annotations: {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
   {{- end }}
+    # Use this annotation in addition to the actual publishNotReadyAddresses
+    # field below because the annotation will stop being respected soon but the
+    # field is broken in some versions of Kubernetes:
+    # https://github.com/kubernetes/kubernetes/issues/58662
+    service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
 spec:
   type: ClusterIP
   clusterIP: None
+  # We want all pods in the StatefulSet to have their addresses published for
+  # the sake of the other Postgresql pods even before they're ready, since they
+  # have to be able to talk to each other in order to become ready.
+  publishNotReadyAddresses: true
   ports:
     - name: tcp-postgresql
       port: {{ template "postgresql.port" . }}