MasterUsername

• aws rds describe-db-instances | grep MasterUsername
• aws redshift describe-clusters

Related

• Master
• aws rds modify-db-instance --master-user-password

See also

• root, /, /root/, /var/root/, admin, administrator, MasterUsername, AdministratorAccess, PostgreSQL superuser, roles/admin
• AWS RDS: AWS::RDS, aws rds [ create-db-instance | create-db-instance-read-replica | describe-db-instances | modify-db-instance | modify-db-cluster | create-db-subnet-group | delete-db-instance | create-db-snapshot | aws rds create-db-parameter-group ], AllocatedStorage, FreeStorageSpace, generate-db-auth-token