masterUserAuthenticationType

Specifies the authentication type for the master user. With IAM master user authentication, you can change the master DB user to use IAM database authentication.

You can specify one of the following values:

• password - Use standard database authentication with a password.

• iam-db-auth - Use IAM database authentication for the master user.

Valid for Cluster Type: Aurora DB clusters and Multi-AZ DB clusters

This option is only valid for RDS for PostgreSQL and Aurora PostgreSQL engines.