Red Hat SATELLITE 5.3.0 RELEASE NOTES Informações Técnicas descarregar pdf (Página 21)

4.3 Red Hat Network (RHN) Satellite

All RHN functionality is on the network, allowing much greater functionality and customization.

The Satellite server connects with Red Hat over the public Internet to download new content

and updates. This model also allows customers to take their Red Hat Network solution

completely off-line if desired. Features include:

• An embedded database to store packages, profiles, and system information.

• Instantly update systems for security fixes or to provide packages or applications

needed immediately.

• API layer allows the creation of scripts to automate functions or integrate with existing

management applications.

• Distribute custom or 3rd party applications and updates.

• Create staged environments (development, test, production) to select, manage and

test content in a structured manner.

• Create errata for custom content, or modify existing errata to provide specific

information to different groups.

• Access to advanced features in the Provisioning Module, such as bare metal PXE boot

provisioning and integrated network install trees.

• Access to Red Hat Network Monitoring Module for tracking system and application

performance.

RHN Satellite is Red Hat’s on-premise systems management solution that provides software

updates, configuration management, provisioning and monitoring across both physical and

virtual Red Hat Enterprise Linux servers. It offers customers opportunities to gain enhanced

performance, centralized control and higher scalability for their systems, while deployed on a

management server located inside the customer’s data center and firewall.

In September 2009, Red Hat released RHN Satellite 5.3, the first fully open source version of

the product. This latest version offers opportunities for increased flexibility and faster

provisioning setups for customers with the incorporation of open source Cobbler technology in

its provisioning architecture.

4.3.1 Cobbler

Cobbler is a Linux installation server that allows for rapid setup of network installation

environments. It binds and automates many associated Linux tasks, eliminating the need for

many various commands and applications when rolling out new systems and, in some cases,

changing existing ones. With a simple series of commands, network installs can be

configured for PXE, re-installations, media-based net-installs, and virtualized installs

(supporting Xen and KVM).

Cobbler can also optionally help with managing DHCP, DNS, and yum package mirroring

infrastructure. In this regard, it is a more generalized automation application, rather than just

dealing specifically with installations. There is also a lightweight built-in configuration

management system as well as support for integrating with other configuration management

systems. Cobbler has a command line interface as well as a web interface and several API

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