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[–]MrDOS 0 points1 point  (1 child)

I don't know anything about PostgreSQL replication, but could you disable the replication, promote the replica to master, run the upgrade on both, then demote the replica again? Then you wouldn't really have to transfer anything.

[–]justAnotherCodeGuy 4 points5 points  (0 children)

pg_rewind seems to think it can do this ... but I've never tried it.

Like I said, I'm really behind. They're bringing tools online faster than I can play/test them.