Viewing pending database upgrades for RDS Custom DB instances

You can see pending database upgrades for your Amazon RDS Custom DB instances by using the describe-db-instances or describe-pending-maintenance-actions AWS CLI command.

However, this approach doesn't work if you used the --apply-immediately option or if the upgrade is in progress.

The following describe-db-instances command shows pending database upgrades for my-custom-instance.

aws rds describe-db-instances --db-instance-identifier my-custom-instance

The output resembles the following.

{
    "DBInstances": [
        {
           "DBInstanceIdentifier": "my-custom-instance",
            "EngineVersion": "19.my_cev1",
            ...
            "PendingModifiedValues": {
                "EngineVersion": "19.my_cev3"
            ...
            }
        }
    ]
}