Re: pg_upgrade instructions involving "rsync --size-only" might lead to standby corruption?

* Nikolay Samokhvalov (nik@postgres.ai) wrote:
> But this can happen with anyone who follows the procedure from the docs as
> is and doesn't do any additional steps, because in step 9 "Prepare for
> standby server upgrades":
>
> 1) there is no requirement to follow specific order to shut down the nodes
>    - "Streaming replication and log-shipping standby servers can remain
> running until a later step" should probably be changed to a
> requirement-like "keep them running"

Agreed that it would be good to clarify that the primary should be shut
down first, to make sure everything written by the primary has been
replicated to all of the replicas.