Once a backup catalog is initialized and a new backup instance is added, you can use the pg_probackup3.conf configuration file located in the backup_dir/backups/instance_name directory to fine-tune pg_probackup3 configuration of this instance.

For example, the backup command uses a regular Postgres Pro connection. To avoid specifying connection options each time on the command line, you can set them in the pg_probackup3.conf configuration file using the set-config command.

Initially, pg_probackup3.conf contains the following settings:

Additionally, you can define retention, logging, and compression settings using the set-config command:

pg_probackup3 set-config -B backup_dir --instance=instance_name
[--external-dirs=external_directory_path] [connection_options] [retention_options] [logging_options]

To view the current settings, run the following command:

pg_probackup3 show-config -B backup_dir --instance=instance_name

You can override the settings defined in pg_probackup3.conf when running pg_probackup3 commands via the corresponding environment variables and/or command line options.