*`mysql_bind_address` : (default: `Null`, default evolinux config is then used) ;
*`mysql_max_connections`: maximum number of simultaneous connections (default: `Null`, default evolinux config is then used) ;
*`mysql_max_connect_errors`: number of permitted successive interrupted connection requests before a host gets blocked (default: `Null`, default evolinux config is then used) ;
*`mysql_table_cache`: (default: `Null`, default evolinux config is then used) ;
*`mysql_tmp_table_size`: (default: `Null`, default evolinux config is then used) ;
*`mysql_max_heap_table_size`: (default: `Null`, default evolinux config is then used) ;
*`mysql_query_cache_limit`: (default: `Null`, default evolinux config is then used) ;
*`mysql_query_cache_size`: (default: `Null`, default evolinux config is then used) ;
NB : changing the _datadir_ location can be done multiple times, as long as it is not restored to the default initial location, (because a symlink is created and can't be switched back, yet).