Deploying the MySQL applier is the most straight forward of deployments. This section covers configuration of the applier into all releases of MySQL, including Amazon RDS, Amazon Aurora, Google Cloud SQL and Microsoft Azure.
Service Alpha on host1 extracts the information from the MySQL binary log into THL.
Service Alpha reads the information from the remote replicator as THL, and applies that to the target MySQL instance via a JDBC Connector.
The Applier replicator can be installed on:
A host with write access to the target database host
An EC2 Host with write access to the target Instance
The same host as the target database
The same host as the extractor (See Section 5.2, “Deploying Multiple Replicators on a Single Host”)