serverName
The host name of the endpoint database.
For an Amazon RDS PostgreSQL instance, this is the output of DescribeDBInstances, in the <a href="https://docs.aws.amazon.com/AmazonRDS/latest/APIReference/API_Endpoint.html">Endpoint</a>.Address
field.
For an Aurora PostgreSQL instance, this is the output of DescribeDBClusters, in the Endpoint
field.