The system uses PostgreSQL (known as Postgres) as a database solution. Postgres databases use SQL language to store and manage databases on the system.
To learn more about Postgres, see https://www.postgresql.org/docs/.
The Patroni tool can be used to manage and maintain information in a Postgres database. It handles tasks such as listing cluster members and the replication status, configuring and restarting databases, and more. For more information about this tool, refer to Troubleshoot Postgres Database.