What does pgdumpall do?
pg_dumpall is a PostgreSQL command-line utility used for performing logical backups of all databases within a PostgreSQL cluster. It allows you to create a consistent point-in-time snapshot of the entire cluster, including all databases, roles, and schemas.
Why is it important?
Logical backups created with pg_dumpall are essential for data recovery, migrating PostgreSQL clusters, and replicating data across database instances. It provides a comprehensive backup of the entire cluster's configuration and data.
How to use pgdumpall:
pg_dumpall is typically used with options to specify output files and authentication parameters. Here's a basic usage example:
pg_dumpall [option...] > outputfile
Common Options:
-U, --username: The name of the user to connect as.
-h, --host: Database server host or socket directory.
-f, --file: Output file for the dump.
-c, --clean: Output commands to clean (drop) database objects before recreating them.
-v, --verbose: Print detailed progress messages.