I don't know what happened, but it seems the MySQL-Moodle connection was made. Moodle has showed the GNL page, has created tables and the last message I could see it's
(mysql): SELECT * FROM mdl_config
Hummm...but, I remember I didn't erase the line " $db->debug=1; "
...so, I just deleted it and then appears
Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 46080 bytes) in /usr/moodle/mymoodle/mod/workshop/lib.php on line 1900
So i just incremented the limit memory size (on php.ini) and.. yes, works like magic!!