We were creating a read replica for an RDS MySQL (5.7.28) instance, and before the read replica became available one of our developer accidentally connected to the read replica and was able to write to the read replica (though the read replica should have prevented any writing operation). Later on he discovered the master instance and the read replica were out of sync since the read replica had the record while the master instance didn't.
We are wondering if there is a way to check the synchronization status between the master and read replica. We have explored 3rd party options such as mysqlrplsync from mysql-utilities and pt-table-checksum from Percona toolkits but they require the database user to have SUPER privilege, which RDS does not grant. Is there an RDS native tool to perform such a check?
Thank you.
