Good day, why's that?
(user is postgres, who owns /var/lib/pgsql/data/) bash-2.05$ bin/pg_upgrade -D /var/lib/pgsql/data/ -1 You must run pg_upgrade in either mode 1 or mode 2. Usage: pg_upgrade [-D datadir] -1 | -2 bash-2.05$ Markus Bertheau
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