yum-cronの導入

#yum install yum-cron

#vi /etc/yum.conf

exclude=kernel* gcc* httpd* mysql* php*

1	exclude=kernel* gcc* httpd* mysql* php*

#vi /etc/sysconfig/yum-cron

CHECK_ONLY=yes

1	CHECK_ONLY=yes

#/etc/rc.d/init.d/yum-cron start

#chkconfig --level 2345 yum-cron on