Enabling Automatic Software Updates on CentOS 5

It's important to keep your server software up-to-date. The commands below will enable automatic nightly updates using CentOS 5's default yum package manager.

# yum -y install yum-cron crontabs vixie-cron
# service cron start
# chkconfig --level 2345 yum-cron on
# service yum-cron start