Hi All It solved after re-install freeradius. I guess installing freeradius-mysql library then freeradius in sequence is correct installation. (or do someways like ld command to link it? But I did ld it didn't work) Best Regards Gary ----- Original Message ----- From: gary To: FreeRadius users mailing list Sent: Wednesday, September 28, 2011 11:34 AM Subject: couldn't link driver rlm_sql_mysql Hi All I am setting up freeradius 2.1.11+mysql 5.5.16 on Fedora 13. Executing command "radiusd -X" it says could not link driver rlm_sql_mysql(read as below). It not worked even I install "freeradius-mysql" library but I can find the driver "rlm_sql_mysql.so" in "/usr/lib/freeradius" folder. Anyone can help me? ################################################################### #radiusd -X Could not link driver rlm_sql_mysql: rlm_sql_mysql.so: cannot open shared object file: No such file or directory Make sure it (and all its dependent libraries!) are in the search path of your system's ld. /usr/local/etc/raddb/sql.conf[22]: Instantiation failed for module "sql" /usr/local/etc/raddb/sites-enabled/default[166]: Failed to load module "sql". /usr/local/etc/raddb/sites-enabled/default[69]: Errors parsing authorize section. ################################################################## Best Regards Gary ------------------------------------------------------------------------------ - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html