CentOS 7 - Automatic security updates

In order to enable automatic download and install of critical security updates, carry out the following:

Log on as root and manually update the server:

yum check-update yum update

Now install cron and edit conf:

yum update -y && yum install yum-cron -y   vi /etc/yum/yum-cron.conf   # Edit the following lines to match these values   update_cmd = security update_messages = yes download_updates = yes apply_updates = yes   emit_via = email email_from = root@localhost email_to = root

Please change the values for email to something relevant

Now we start the service:

systemctl start yum-cron systemctl enable yum-cron