Although pg_probackup3 can be used by a superuser, it is recommended to create a separate role with the minimum permissions required for the chosen backup strategy. In these configuration instructions, the backup role is used as an example.

For security reasons, it is recommended to run the configuration SQL queries below in a separate database.

postgres=# CREATE DATABASE backupdb;
postgres=# \c backupdb

To perform a backup, the following permissions for role backup are required only in the database used for connection to the Postgres Pro server:

BEGIN;
CREATE ROLE backup WITH LOGIN REPLICATION;
GRANT USAGE ON SCHEMA pg_catalog TO backup;
GRANT SELECT ON TABLE pg_catalog.pg_tablespace TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.current_setting(text) TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.set_config(text, text, boolean) TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.pg_is_in_recovery() TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.pg_backup_start(text, boolean) TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.pg_backup_stop(boolean) TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.pg_create_restore_point(text) TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.pg_switch_wal() TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.pg_last_wal_replay_lsn() TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.txid_current() TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.txid_current_snapshot() TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.txid_snapshot_xmax(txid_snapshot) TO backup;
GRANT EXECUTE ON FUNCTION pg_catalog.pg_control_checkpoint() TO backup;
COMMIT;

In the pg_hba.conf file, allow connection to the database cluster on behalf of the backup role.

Depending on whether you plan to take standalone or archive backups, Postgres Pro cluster configuration will differ, as specified in the sections below. To run pg_probackup3 in the remote mode or create PTRACK backups, additional setup is required.

For details, see the sections Setting up STREAM Backups, Setting up continuous WAL archiving, Configuring SSH Connection, and Setting up PTRACK Backups.