Hi,
We have documentation on how to upgrade "publisher" and "subscriber"
at [1], but currently we do not have any documentation on how to
upgrade logical replication clusters.
Here is a patch to document how to upgrade different logical
replication clusters: a) Upgrade 2 node logical replication cluster b)
Upgrade cascaded logical replication cluster c) Upgrade 2 node
circular logical replication cluster.
Thoughts?
[1] - https://www.postgresql.org/docs/devel/pgupgrade.html
Regards,
Vignesh