This is because only an incremental backup is created during the upgrade process in this case. Creating a snapshot before the upgrade reduces the time needed for the upgrade process to complete. If you already turned on backups for your instance, then a snapshot is created automatically as part of the upgrade process. No snapshot created before the upgrade: It's a best practice to create a snapshot of the RDS or Aurora for PostgreSQL cluster snapshot before performing the upgrade. Note: Complete these maintenance activities before performing the database engine version upgrades. aws rds describe-pending-maintenance-actions -resource-identifier example-arn Or, use the AWS Command Line Interface (AWS CLI) command describe-pending-maintenance-actions on your instance. For Aurora for PostgreSQL, see Viewing pending maintenance. To avoid this issue, look for pending maintenance activities in the Pending maintenance section in your RDS console. Creating a full backup can take a long time, especially if the database is very large. So a full backup might be triggered instead of an incremental backup. This backup on the new secondary instance might not be the latest backup. In case of a failover, a backup is created on a new secondary instance after the upgrade. When you set up your instance in Multi-AZ, the backup for the instance is usually created on the secondary instance. So, performing operating system maintenance activities leads to an increase in the time taken to complete the upgrade.Īlso, if your RDS instance is in a Multi-AZ deployment, then operating system maintenance results in a failover. In this case, the operating system patch is applied first, and then the engine version is upgraded. This might include applying an operating system patch on your RDS instance. Pending maintenance activities: Any pending maintenance activities are automatically applied with engine version upgrades. Create a snapshot of the instance after the upgrade.Īlthough Amazon RDS manages these upgrades, you might encounter the following issues during a version upgrade:.Use the pg_upgrade utility to run the upgrade job on the instance.This happens only if you set the backup retention period for your DB instance to a number greater than zero.
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