My Read Replica appears “stuck” after a Multi-AZ failover and is unable to obtain or apply updates from the
source DB Instance. What do I do?
A.
You will need to delete the Read Replica and create a new one to replace it.
B.
You will need to disassociate the DB Engine and re associate it.
C.
The instance should be deployed to Single AZ and then moved to Multi-AZ once again.
D.
You will need to delete the DB Instance and create a new one to replace it.
Explanation:
Q: My Amazon RDS for MySQL Read Replica appears “stuck” after a Multi-AZ failover and is unable to obtain
or apply updates from the source DB Instance. What do I do? … To resolve the current issue, you will need to
delete the Read Replica and create a new one to replace it. “
https://aws.amazon.com/rds/faqs/