I've discovered the problem. The original standalone-full-ha.xml
of the jboss-eap-6.1 doesn't come with the console-handler by default as the others like domain.xml.
So once i've put this
<console-handler name="CONSOLE">
<level name="INFO"/>
<formatter>
<pattern-formatter pattern="%K{level}%d{HH:mm:ss,SSS} %-5p [%c] (%t) %s%E%n"/>
</formatter>
</console-handler>
<root-logger>
<level name="INFO"/>
<handlers>
<handler name="CONSOLE"/>
<handler name="FILE"/>
</handlers>
</root-logger>
everything worked correctly!