[[rpm-patching]] = Patching an RPM Installation .Prerequisites * Ensure that the base operating system is up to date, and is subscribed and enabled to get updates from the standard Red Hat Enterprise Linux repositories. * Ensure that you are subscribed to the relevant RH-SSO repository for the update. * Back up all configuration files, deployments, and user data. [IMPORTANT] ==== For a managed domain, the RH-SSO domain controller should be updated first. ==== To install a RH-SSO patch via RPM from your subscribed repository, update your Red Hat Enterprise Linux system using the following command: [source,bash,options="nowrap"] ---- yum update ----