I have finish the installation of phpMyAdmin at hemlock. It can be find
at . But it is not accessible by the web, only by localhost. You have
to use a ssh-tunnel.
At linux, you can use
ssh -L 8080:127.0.0.1:80 hemlock.knams.wikimedia.org
. Login at hemlock and you can find phpmyadmin at . The windows guys
can use putty in the same way (look for "tunnel" and google a bit).
If there are questions, please mail me :).