Red Hat NETWORK PROXY SERVER 4.1.0 -, Руководство по установке

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Chapter 1. Introduction 3
1.3. Terms to Understand
Before understanding RHN Proxy Server, it is important to become familiar with the fol-
lowing Red Hat Network terms:
Channel
A channel is a list of software packages. There are two types of channels: base chan-
nels and child channels. A base channel consists of a list of packages based on a
specific architecture and Red Hat release. A child channel is a channel associated
with a base channel that contains extra packages.
Organization Administrator
An Organization Administrator is a user role with the highest level of control over an
organization’s Red Hat Network account. Members with this role can add other users,
other systems, and system groups to the organization, as well as remove them. A Red
Hat Network organization must have at least one Organization Administrator.
Channel Administrator
A Channel Administrator is a user role with full access to channel management capa-
bilities. Users with this role are capable of creating channels and assigning packages
to channels. This role can be assigned by an Organization Administrator through the
Users tab of the RHN website.
Red Hat Update Agent<
The Red Hat Update Agent is the Red Hat Network client application (
up2date
) that
allows users to retrieve and install new or updated packages for the client system on
which the application is run.
Traceback
A traceback is a detailed description of "what went wrong" that is useful for trou-
bleshooting the RHN Proxy Server. Tracebacks are automatically generated when a
critical error occurs and are emailed to the individual(s) designated in the RHN Proxy
Server’s configuration file.
For more detailed explanations of these terms and others, refer to the Red Hat Network
Reference Guide available at http://www.redhat.com/docs/ and http://rhn.redhat.com/help.
1.4. How it Works
The Red Hat Update Agent on the client systems does not directly contact a Red Hat
Network Server. Instead, the client (or clients) connects in turn to an RHN Proxy Server
that connects to the Red Hat Network Servers or to a RHN Satellite Server. Thus, the client