masterUsername
The user name associated with the admin user account for the cluster that is being created.
Constraints:
Must be 1 - 128 alphanumeric characters or hyphens. The user name can't be
PUBLIC
.Must contain only lowercase letters, numbers, underscore, plus sign, period (dot), at symbol (@), or hyphen.
The first character must be a letter.
Must not contain a colon (:) or a slash (/).
Cannot be a reserved word. A list of reserved words can be found in Reserved Words in the Amazon Redshift Database Developer Guide.