8000 Document that Log-Shipping Standby Servers cannot be upgraded by · postgres/postgres@4810ebe · GitHub
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Document that Log-Shipping Standby Servers cannot be upgraded by
pg_upgrade. Backpatch to 9.2.
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‎doc/src/sgml/pgupgrade.sgml

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@@ -517,6 +517,12 @@ psql --username postgres --file script.sql postgres
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<literal>-d /real-data-directory -o '-D /configuration-directory'</>.
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</para>
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<para>
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A Log-Shipping Standby Server (<xref linkend="warm-standby">) cannot
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be upgraded because the server must allow writes. The simplest way
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is to upgrade the primary and use rsync to rebuild the standbys.
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</para>
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<para>
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If you want to use link mode and you do not want your old cluster
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to be modified when the new cluster is started, make a copy of the

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