Description of problem:
After installing mysql server.
[root@walec51-linux bin]# service mysqld start
Redirecting to /bin/systemctl start mysqld.service
Failed to issue method call: Unit mysqld.service is masked.
Version-Release number of selected component (if applicable):
Up to date Fedora 17 64 bit
mysql Ver 14.14 Distrib 5.5.28, for Linux (x86_64) using readline 5.1
*** This bug has been marked as a duplicate of bug 894590 ***