Red Hat NETWORK SATELLITE 5.1.1 - RELEASE NOTES, Руководство по установке

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Chapter 1.
1
Introduction
RHN Satellite Server provides a solution to organizations requiring absolute control over and privacy
of the maintenance and package deployment of their servers. It allows Red Hat Network customers
the greatest flexibility and power in keeping servers secure and updated.
Two types of RHN Satellite Server are available: One with a stand-alone database on a separate
machine and one with an embedded database installed on the same machine as the Satellite. This
guide describes the installation of both types of Satellite.
Although the two types of RHN Satellite Server are functionally similar, some differences do exist.
These variations are primarily isolated to hardware requirements, installation steps, and maintenance
activities. They may also appear during troubleshooting. This guide identifies distinctions between
the Satellite types by marking the differing instructions as either
Stand-Alone Database
or
Embedded
Database
.
1.1. Red Hat Network
Red Hat Network (RHN) is the environment for system-level support and management of Red
Hat systems and networks of systems. Red Hat Network brings together the tools, services, and
information repositories needed to maximize the reliability, security, and performance of their systems.
To use RHN, system administrators register the software and hardware profiles, known as System
Profiles, of their client systems with Red Hat Network. When a client system requests package
updates, only the applicable packages for the client are returned (based upon the software profile
stored on the RHN Servers).
Advantages of using Red Hat Network include:
• Scalability — with Red Hat Network, a single system administrator can set up and maintain
hundreds or thousands of Red Hat systems more easily, accurately, and quickly than they could
maintain a single system without Red Hat Network.
• Standard Protocols — standard protocols are used to maintain security and increase capability. For
example, XML-RPC gives Red Hat Network the ability to do much more than merely download files.
• Security — all communication between registered systems and Red Hat Network takes place over
secure Internet connections.
• View Errata Alerts — easily view Errata Alerts for all your client systems through one website.
• Scheduled Actions — use the website to schedule actions, including Errata Updates, package
installs, and software profile updates.
• Simplification — maintaining Red Hat systems becomes a simple, automated process.
1.2. RHN Satellite Server
RHN Satellite Server allows organizations to utilize the benefits of Red Hat Network without having
to provide public Internet access to their servers or other client systems. System Profiles are stored
locally on the customer's RHN Satellite Server. The Red Hat Network website is served from a local
Web server and is not accessible from the Internet. All package management tasks, including Errata
Updates, are performed through the local area network.