Amazon RDS for PostgreSQL

You can use the Commvault software to back up and restore Amazon RDS for PostgreSQL.

To perform PostgreSQL cloud backups from replica, consider the following recommendation:

1. For PostgreSQL master-replica configurations:

   1. Use the master node for backups to avoid potential conflicts with the recovery process on replicas, which might interfere with tools such as pg_dump. Configuring backups on the master node introduces some overhead, as the Commvault access node connects directly to the master database to perform pg_dump.

   2. If using a replica for backups, ensure to configure max_standby_archive_delay and max_standby_streaming_delay settings to allow sufficient time for the Commvault triggered pg_dump to complete without being canceled due to WAL replay conflicts. For more information, see PostgreSQL Hot Standby Conflicts.

2. Schedule backups during off-peak or quiet hours

   • Schedule backups during off-peak or quiet hours to ensure faster execution and minimize the risk of connection interruptions or resource contention.

Backups

Backups You Can Perform

• Full backups

When You Can Perform Backups

• On a schedule: The server plan that you assign manages scheduled backups

• On demand: You can perform on-demand backups at any time

Data You Can Back Up

• PostgreSQL user databases

  Note

  The following databases will be skipped from the backups of:

  • Amazon RDS PostgresSQL database - rdsadmin, template0, template1

Restores

Backups You Can Use for Restores

• The most recent backup: For example, restore the most recent backup to its original location

• A backup from a specific date: For example, restore data to a point in time before it became unusable

• Backups from a date range: For example, restore data that was accidentally deleted

Destinations You Can Restore To

• In-place: Restore data to the location that it was backed up from

• Out-of-place: Restore data to the following destinations:

  • Cross-cloud: You can restore PostgreSQL databases from one cloud platform (such as Amazon Web Services and Google Cloud Platform) to a different cloud platform. The source computer and destination computer should have the same operating system.

  • An instance in the same platform or a different platform (such as Alibaba Cloud, Amazon Web Services, Azure, and Google Cloud Platform) across regions

  • An on-premises instance

  • A disk location