Red Hat NETWORK - USER 3.0 Przewodnik Instalacji Pobierz pdf (Strona 52)

Chapter 6. Importing and Synchronizing

Populating the tables describing common features for channels (channel families). This can

also be accomplished individually by passing the --step=channel-families option to

satellite-sync.

Creating a particular channel in the database and importing the metadata describing the channel.

Individually, use the --step=channels option.

Moving the RPM packages from the temporary repository into their final location. Individually, use

the --step=rpms option.

Parsing the header metadata for each package in the channel, uploading the package data, and

associating it with the channel. Individually, use the --step=packages option.

Identifying Errata associated with the packages and including them in the repository. Individually,

use the --step=errata option.

After running the preceding sample command, the population of the channel should be complete. All

of the packages should have been moved out of the repository; this can be verified with the command

cd /var/rhn-sat-import/; ls -alR | grep rpm. If all RPMs have been installed and moved

to their permanent locations, then this count will be zero, and the administrator may safely remove the

temporary repository (in this case, /var/rhn-sat-import/).

6.3. Synchronizing

An update channel is only as useful as the freshness of the information in that channel. Since the RHN

Satellite is designed to be a standalone environment, any update advisories published by RHN must

be manually imported and synchronized by the administrator of the RHN Satellite.

During synchronization over the Internet, the RHN Satellite Synchronization Tool performs the

following steps:

1. Connects over SSL to central RHN Servers, authenticates itself as an RHN Satellite, and triggers

an export of RHN data — unless a local mount point for RHN-exported data is specified, in which

case no connection is necessary. Refer to Section 6.3.2, “Synchronizing Errata and Packages via

Local Media” for an explanation.

2. Examines the export and identifies differences between the RHN Satellite data set and the

exported RHN data set. For a particular channel, the following information is analyzed:

• Channel metadata

• Metadata of all packages in that channel

• Metadata for all Errata that affect that channel

Note

All analysis is performed on the RHN Satellite; the central RHN Servers deliver only an export

of its channel information and remain ignorant of any details regarding the RHN Satellite.

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Red Hat NETWORK - USER 3.0 Przewodnik Instalacji Strona 52