Sep 25 17:04:36 myhost kernel: type=1400 audit(1380096276.116:39): avc: denied { open } for pid=29442 comm="mysqld" name="db.opt" dev=dm-10 ino=24240138 scontext=unconfined_u:system_r:mysqld_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file
Was caused by:
Missing type enforcement (TE) allow rule.
You can use audit2allow to generate a loadable module to allow this access.