Trying to upgrade from PostgreSQL 10.7 to 11.2 with default configuration.
The upgrade runs for some times and then reverts back to 10.7 (luckily). The log file contains:
*failure*
There were problems executing ""/rdsdbbin/postgres/bin/pg_restore" --host /rdsdbdata/log/upgrade --port 8193 --username rdsadmin --create --exit-on-error --verbose --dbname template1 "pg_upgrade_dump_16404.custom" >> "pg_upgrade_dump_16404.log" 2>&1"
Consult the last few lines of "pg_upgrade_dump_16404.log" for
the probable cause of the failure.
"/rdsdbbin/postgres/bin/pg_ctl" -w -D "/rdsdbdata/db" -o "--config_file=/rdsdbdata/config_new/postgresql.conf" -m fast stop >> "pg_upgrade_server.log" 2>&1
*failure*
There were problems executing ""/rdsdbbin/postgres/bin/pg_restore" --host /rdsdbdata/log/upgrade --port 8193 --username rdsadmin --create --exit-on-error --verbose --dbname template1 "pg_upgrade_dump_13240846.custom" >> "pg_upgrade_dump_13240846.log" 2>&1"
Consult the last few lines of "pg_upgrade_dump_13240846.log" for
the probable cause of the failure.
"/rdsdbbin/postgres/bin/pg_ctl" -w -D "/rdsdbdata/db" -o "--config_file=/rdsdbdata/config_new/postgresql.conf" -m fast stop >> "pg_upgrade_server.log" 2>&1
child process exited abnormally: status 256
"/rdsdbbin/postgres/bin/pg_ctl" -w -D "/rdsdbdata/db" -o "--config_file=/rdsdbdata/config_new/postgresql.conf" -m fast stop >> "pg_upgrade_server.log" 2>&1
----------------------- END OF LOG ----------------------
However, the file pg_upgrade_dump_....log can not be found in the user interface.
Does anyone know how to find the root cause of this failure to restore the backup and finish the upgrade?