as it was fine with zpanel and directadmin when i used them but as i installed ispconfig3 its not working
does any other setup needed for ispconfig3?
There is no special setup needed for ispconfig and ispconfig uses the mysql package of the linux distribution and ispconfig does not alter any mysql config files during setup so the reason that mysql does not start is most likely not related to ispconfig.
Which Tutorial did you use to install ispconfig and was this a fresh (empty) server before you installed it?
does there need some other things
at host i putted local host
user would be root password left blank db is putted with any name
could you tell something missing there?
The hostname is "localhost" (in one word), the username is "root" and the password is the root password of your myqsl installation, you should never use a empty root password, but thats for security reasons only and will not cause mysql start to fail.