参考网站:http://pkgs.org/centos-6/epel-x86_64/pam_mysql-0.7-0.12.rc1.el6.x86_64.rpm.html
Download the latest epel-release rpm from
http://dl.fedoraproject.org/pub/epel/6/x86_64/
Install epel-release rpm:
# rpm -Uvh epel-release*rpm
Install pam_mysql rpm package:
# yum install pam_mysql