Set VolumeMount to ReadOnly=true explicitly for DB replica pod for /pgdata

[vladimirvivien]

The documentation mentions that the replica pod for the database is read-only. However, when inspecting the pod, it shows that the readOnly flag is set to false.

Volumes:
  pgdata:
    Type:	PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
    ClaimName:	pgcluster-pvc
    ReadOnly:	false

Would it make sense to also set the volume bind-mount to readOnly for the pod container or would that break the normal DB operation ?

[jmccormick2001]

with the replica being able to be promoted to a read-write master (recovery) it would need to be set to read/write, so essentially doing it this way supports a future 'failover' command, it will work sort of like this: "pgo failover mycluster', when a user enters that command it will find a replica and trigger the failover to it plus a whole lot of other stuff :^)) hope that helps.