rlm_sql_mysql: Mysql error 'Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)'
rlm_sql (sql): Failed to connect DB handle #0
rlm_sql (sql): Failed to connect to any SQL server.

your socket file is not in the place.. maybe you should use an IP in your sql.conf instead of the “localhost” !

Regards,

E:S