snippetbashTip
pg_upgrade — Upgrade a PostgreSQL database cluster to a new major version. More information: <https://www.postgre
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Problem
How to use the
pg_upgrade command: Upgrade a PostgreSQL database cluster to a new major version. More information: <https://www.postgresql.org/docs/current/pgupgrade.html>.Solution
pg_upgrade — Upgrade a PostgreSQL database cluster to a new major version. More information: <https://www.postgresql.org/docs/current/pgupgrade.html>.Check clusters before upgrading:
pg_upgrade {{[-c|--check]}} {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Perform the actual upgrade:
pg_upgrade {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Use multiple parallel jobs during the upgrade:
pg_upgrade {{[-j|--jobs]}} {{njobs}} {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Specify the old and new PostgreSQL ports:
pg_upgrade {{[-p|--old-port]}} {{port}} {{[-P|--new-port]}} {{port}} {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Use hard links instead of copying files to the new cluster:
pg_upgrade {{[-k|--link]}} {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Display help:
pg_upgrade {{[-?|--help]}}Code Snippets
Check clusters before upgrading
pg_upgrade {{[-c|--check]}} {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Perform the actual upgrade
pg_upgrade {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Use multiple parallel jobs during the upgrade
pg_upgrade {{[-j|--jobs]}} {{njobs}} {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Specify the old and new PostgreSQL ports
pg_upgrade {{[-p|--old-port]}} {{port}} {{[-P|--new-port]}} {{port}} {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Use hard links instead of copying files to the new cluster
pg_upgrade {{[-k|--link]}} {{[-b|--old-bindir]}} {{path/to/old_bin}} {{[-B|--new-bindir]}} {{path/to/new_bin}} {{[-d|--old-datadir]}} {{path/to/old_data}} {{[-D|--new-datadir]}} {{path/to/new_data}}Context
tldr-pages: common/pg_upgrade
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