186 Glossary
R
Registered System
A system that is registered with Red Hat Network. Also known as a client system.
Red Hat Network Daemon
The RHN client daemon (rhnsd) that periodically polls Red Hat Network for scheduled actions.
Red Hat Network Registration Client
The RHN client application (rhn_register) that collects information about the client system,
creates a System Profile and Digital Certificate , establishes a connection with the Red Hat
Network servers, and registers the system with Red Hat Network.
Red Hat Update Agent
The RHN client application (up2date) that allows users to retrieve and install all updated pack-
ages for the client system on which the application is run. Use the Red Hat Update Agent
Configuration Tool to configure its preferences, including whether to install the packages after
they are downloaded.
RPM
A software package manager that was developed by Red Hat. It can be used to build, install,
query, verify, update, and uninstall software packages. All software updates from RHN are de-
livered in RPM format.
RPM Database
Each Red Hat Enterprise Linux system has an RPM database that stores information about all
the RPM packages installed on the system. This information includes the version of the package,
which files were installed with the package, a brief description of the package, the installation
date, and more.
RPM Update
Red Hat Network option to deliver the RPM packages based on the Errata Alert list to a client
system without user intervention. If this feature is selected, packages are delivered through the
Red Hat Network Daemon running on the client system.
S
Security Alert
An Errata Alert that pertains to system security.
