Any database created on a slave server will not be able to be managed with the PHPMYADMIN utility located on the main server. PHPMYADMIN should be installed on the slave servers as well, and the link next to the database label in the control panel should be changed to take you to the PHPMYADMIN installed on the slave server. instead of https://master.xxx.com:8080/phpmyadmin you get https://slave.xxx.com:8080/phpmyadmin Because creating a database without being able to manage it easily(by any user) is really hard to work with.
I'am ale to manage all databases on the slave servers from the central phpmyadmin instance on my servers. I guess you just missed to add yor database server in the phpmyadmin config.inc.php file.
