Problem description
Cross-Region Backup of RDS Database fails with the Error: Option group rdsexample1-12345678901234567890 does not exist
But the Option Group specified in the Error in CloudRanger exists in AWS.
When looking at the RDS Service in AWS and under the 'Option Groups' section, the Option Group specified in the Error in CloudRanger 'rdsexample1-12345678901234567890' is present.
Also when looking at the 'Associated resources' on the Option Group 'rdsexample1-12345678901234567890', the RDS Database 'rdsexample1' you are trying to Backup in CloudRanger is listed there.
Cause
CloudRanger is looking for a copy of the Option Group in the target Region and fails because the copy of the Option Group does not exist.
This Error is due to a limitation in AWS on the sdk used by Druva CloudRanger making Cross-Region copy of an option group not supported.
Resolution
As a manual workaround you can manually create in the target AWS Region in AWS an Option Group with the same name as the one in the Source Region before trying to Backup the RDS Database again.
Create the same option group in three places:
1. First in the source account and source region
2. Second, in the target account and source region
3. Lastly, in the target account and target region