PostgreSQL comes with built-in utilities for creating and restoring backups

Note: All commands can take the login url in the format postgres://db_user:db_pass@db_host:db_port/db_name?sslmode=disable

Backup

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pg_dump -U citizix -h 10.2.1.10 -d dbname > dbname.sql

Possible options:

• -W: prompt for password
• -F: Format
• p: plain sql
• c: custom-format archive
• d: directory-format archive
• t: tar-format archive

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pg_dump -U db_user -W -F t db_name > /path/to/dump_name.tar

Take a compressed backup of PostgreSQL database

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pg_dump -U db_user -d db_name | gzip > path/to/backup.sql.gz

You can also pass in a connection strong

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pg_dump "postgres://db_user:db_pass@db_host:db_port/db_name?sslmode=disable" > db_name-2023-03-28.sql

DB restore

To restore

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psql -U citizix -h 10.0.8.133 -d dbname -f dbname.sql

The -C flag is for creating a database before restoring data into it.

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pg_restore -d db_name /path/to/dump_name.tar -c -U db_user

Restoring from a compressed backup

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gunzip -c path/to/backup.sql.gz | psql -U db_user -d db_name

Backing up a specific table

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pg_dump -U db_user -d db_name -t table_name > path/to/backup.sql

Restoring a table from SQL file

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psql -U db_user -d db_name < path/to/backup.sql

Backing up all the databases at once

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pg_dumpall -U db_user > path/to/backup.sql

Restoring all the databases from the backup file

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psql -U db_user < path/to/backup.sql