I accidentally chose standard installation mode on my master server and no i can't connect to my MySQL master server during my ISPconfig installs on the other machines. How can I re-install ISPconfig so I can choose the correct options during the install?
That ok for the master server. Thats not related to the ispconfig install selection standard or expert on the master. If you cant connect from the slaves, then the root permisssion records as described in the multiserver tutorials are not correct. Please check and redo them again. It is also very important that you modified the hosts files on all servers of the cluster as described in the tutorial or the logins from the slaves might fail.